https://www.apimba.org/mediawiki/index.php?action=history&feed=atom&title=Quantum_spin 2026-07-06T23:15:39Z Revision history for this page on the wiki MediaWiki 1.42.7 https://www.apimba.org/mediawiki/index.php?title=Quantum_spin&diff=640&oldid=prev 2020-04-15T01:17:28Z

<p></p> <table style="background-color: #fff; color: #202122;" data-mw="interface"> <col class="diff-marker" /> <col class="diff-content" /> <col class="diff-marker" /> <col class="diff-content" /> <tr class="diff-title" lang="en"> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">← Older revision</td> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 19:17, 14 April 2020</td> </tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l3">Line 3:</td> <td colspan="2" class="diff-lineno">Line 3:</td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>Spin is one of those quantum states that undergo transitions after absorption of the right amount of energy. It is called spin for historical reasons, and the current theories equate it to some kind of [[Angular Momentum|angular momentum]] even though the particle is not actually spinning. This helps with the math since equations for angular momentum work when dealing with spin. Until someone figures out what spin actually is, it is best to consider spin as an entirely internal degree of freedom of a point particle.  </div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>Spin is one of those quantum states that undergo transitions after absorption of the right amount of energy. It is called spin for historical reasons, and the current theories equate it to some kind of [[Angular Momentum|angular momentum]] even though the particle is not actually spinning. This helps with the math since equations for angular momentum work when dealing with spin. Until someone figures out what spin actually is, it is best to consider spin as an entirely internal degree of freedom of a point particle.  </div></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr> <tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del style="font-weight: bold; text-decoration: none;"> </del>Brief overview of spin. Mainly taken from the nice explanation here: [https://en.wikipedia.org/wiki/Spin_%28physics%29 Spin on wikipedia]</div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>Brief overview of spin. Mainly taken from the nice explanation here: [https://en.wikipedia.org/wiki/Spin_%28physics%29 Spin on wikipedia]</div></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>[[Table of particle spins]]</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>[[Table of particle spins]]</div></td></tr> </table>

Milllo https://www.apimba.org/mediawiki/index.php?title=Quantum_spin&diff=358&oldid=prev 2020-03-21T02:40:31Z

<p></p> <table style="background-color: #fff; color: #202122;" data-mw="interface"> <col class="diff-marker" /> <col class="diff-content" /> <col class="diff-marker" /> <col class="diff-content" /> <tr class="diff-title" lang="en"> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">← Older revision</td> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 20:40, 20 March 2020</td> </tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l1">Line 1:</td> <td colspan="2" class="diff-lineno">Line 1:</td></tr> <tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>It is easy to hide ignorance behind mathematics and arcane terminology, and this is a common trick in explanations of quantum mechanics because it is very hard to understand. The fact is, when looking at objects around molecular sizes, the usual rules of interaction no longer apply. A great example is absorption of energy. When you bang a bell with a hammer, no matter how hard or soft you bang it, the energy you use will be absorbed and a sound will be generated. This is not true at the atomic scale. You can shoot billions of photons of energy at an atom and it will have no effect at all unless the amount happens to coincide with one of the energy states of that atom, then 'resonance' happens and a photon is absorbed. After absorption of the energy of the photon the atom transitions to an excited state. What happens while the atom is excited depends on whatever the transition was, usually the atom relaxes using some other mechanism and the energy is released again.</div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>It is easy to hide ignorance behind mathematics and arcane terminology, and this is a common trick in explanations of <ins style="font-weight: bold; text-decoration: none;">[[Quantum Mechanics|</ins>quantum mechanics<ins style="font-weight: bold; text-decoration: none;">]] </ins>because it is very hard to understand. The fact is, when looking at objects around molecular sizes, the usual rules of interaction no longer apply. A great example is absorption of energy. When you bang a bell with a hammer, no matter how hard or soft you bang it, the energy you use will be absorbed and a sound will be generated. This is not true at the atomic scale. You can shoot billions of photons of energy at an atom and it will have no effect at all unless the amount happens to coincide with one of the energy states of that atom, then 'resonance' happens and a photon is absorbed. After absorption of the energy of the photon the atom transitions to an excited state. What happens while the atom is excited depends on whatever the transition was, usually the atom relaxes using some other mechanism and the energy is released again.</div></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>Spin is one of those quantum states that undergo transitions after absorption of the right amount of energy. It is called spin for historical reasons, and the current theories equate it to some kind of [[Angular Momentum|angular momentum]] even though the particle is not actually spinning. This helps with the math since equations for angular momentum work when dealing with spin. Until someone figures out what spin actually is, it is best to consider spin as an entirely internal degree of freedom of a point particle.  </div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>Spin is one of those quantum states that undergo transitions after absorption of the right amount of energy. It is called spin for historical reasons, and the current theories equate it to some kind of [[Angular Momentum|angular momentum]] even though the particle is not actually spinning. This helps with the math since equations for angular momentum work when dealing with spin. Until someone figures out what spin actually is, it is best to consider spin as an entirely internal degree of freedom of a point particle.  </div></td></tr> </table>

Milllo https://www.apimba.org/mediawiki/index.php?title=Quantum_spin&diff=334&oldid=prev 2020-03-20T17:02:21Z

<p></p> <table style="background-color: #fff; color: #202122;" data-mw="interface"> <col class="diff-marker" /> <col class="diff-content" /> <col class="diff-marker" /> <col class="diff-content" /> <tr class="diff-title" lang="en"> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">← Older revision</td> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 11:02, 20 March 2020</td> </tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l1">Line 1:</td> <td colspan="2" class="diff-lineno">Line 1:</td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>It is easy to hide ignorance behind mathematics and arcane terminology, and this is a common trick in explanations of quantum mechanics because it is very hard to understand. The fact is, when looking at objects around molecular sizes, the usual rules of interaction no longer apply. A great example is absorption of energy. When you bang a bell with a hammer, no matter how hard or soft you bang it, the energy you use will be absorbed and a sound will be generated. This is not true at the atomic scale. You can shoot billions of photons of energy at an atom and it will have no effect at all unless the amount happens to coincide with one of the energy states of that atom, then &#039;resonance&#039; happens and a photon is absorbed. After absorption of the energy of the photon the atom transitions to an excited state. What happens while the atom is excited depends on whatever the transition was, usually the atom relaxes using some other mechanism and the energy is released again.</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>It is easy to hide ignorance behind mathematics and arcane terminology, and this is a common trick in explanations of quantum mechanics because it is very hard to understand. The fact is, when looking at objects around molecular sizes, the usual rules of interaction no longer apply. A great example is absorption of energy. When you bang a bell with a hammer, no matter how hard or soft you bang it, the energy you use will be absorbed and a sound will be generated. This is not true at the atomic scale. You can shoot billions of photons of energy at an atom and it will have no effect at all unless the amount happens to coincide with one of the energy states of that atom, then &#039;resonance&#039; happens and a photon is absorbed. After absorption of the energy of the photon the atom transitions to an excited state. What happens while the atom is excited depends on whatever the transition was, usually the atom relaxes using some other mechanism and the energy is released again.</div></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr> <tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>Spin is one of those quantum states that undergo transitions after absorption of the right amount of energy. It is called spin for historical reasons, and the current theories equate it to some kind of angular momentum even though the particle is not actually spinning. This helps with the math since equations for angular momentum work when dealing with spin. Until someone figures out what spin actually is, it is best to consider spin as an entirely internal degree of freedom of a point particle.  </div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>Spin is one of those quantum states that undergo transitions after absorption of the right amount of energy. It is called spin for historical reasons, and the current theories equate it to some kind of <ins style="font-weight: bold; text-decoration: none;">[[Angular Momentum|</ins>angular momentum<ins style="font-weight: bold; text-decoration: none;">]] </ins>even though the particle is not actually spinning. This helps with the math since equations for angular momentum work when dealing with spin. Until someone figures out what spin actually is, it is best to consider spin as an entirely internal degree of freedom of a point particle.  </div></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>  Brief overview of spin. Mainly taken from the nice explanation here: [https://en.wikipedia.org/wiki/Spin_%28physics%29 Spin on wikipedia]</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>  Brief overview of spin. Mainly taken from the nice explanation here: [https://en.wikipedia.org/wiki/Spin_%28physics%29 Spin on wikipedia]</div></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>[[Table of particle spins]]</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>[[Table of particle spins]]</div></td></tr> </table>

Milllo https://www.apimba.org/mediawiki/index.php?title=Quantum_spin&diff=290&oldid=prev 2020-03-18T05:28:42Z

<p></p> <table style="background-color: #fff; color: #202122;" data-mw="interface"> <col class="diff-marker" /> <col class="diff-content" /> <col class="diff-marker" /> <col class="diff-content" /> <tr class="diff-title" lang="en"> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">← Older revision</td> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 23:28, 17 March 2020</td> </tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l1">Line 1:</td> <td colspan="2" class="diff-lineno">Line 1:</td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>It is easy to hide ignorance behind mathematics and arcane terminology, and this is a common trick in explanations of quantum mechanics because it is very hard to understand. The fact is, when looking at objects around molecular sizes, the usual rules of interaction no longer apply. A great example is absorption of energy. When you bang a bell with a hammer, no matter how hard or soft you bang it, the energy you use will be absorbed and a sound will be generated. This is not true at the atomic scale. You can shoot billions of photons of energy at an atom and it will have no effect at all unless the amount happens to coincide with one of the energy states of that atom, then &#039;resonance&#039; happens and a photon is absorbed. After absorption of the energy of the photon the atom transitions to an excited state. What happens while the atom is excited depends on whatever the transition was, usually the atom relaxes using some other mechanism and the energy is released again.</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>It is easy to hide ignorance behind mathematics and arcane terminology, and this is a common trick in explanations of quantum mechanics because it is very hard to understand. The fact is, when looking at objects around molecular sizes, the usual rules of interaction no longer apply. A great example is absorption of energy. When you bang a bell with a hammer, no matter how hard or soft you bang it, the energy you use will be absorbed and a sound will be generated. This is not true at the atomic scale. You can shoot billions of photons of energy at an atom and it will have no effect at all unless the amount happens to coincide with one of the energy states of that atom, then &#039;resonance&#039; happens and a photon is absorbed. After absorption of the energy of the photon the atom transitions to an excited state. What happens while the atom is excited depends on whatever the transition was, usually the atom relaxes using some other mechanism and the energy is released again.</div></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr> <tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>Spin is one of those quantum states that undergo transitions after absorption of the right amount of energy. It is called spin for historical reasons, and the current theories equate it to some kind of angular momentum even though the particle is not actually spinning<del style="font-weight: bold; text-decoration: none;">, this </del>helps with the math since equations for angular momentum work when dealing with spin. Until someone figures out what spin actually is, it is best to consider spin as an entirely internal degree of freedom of a point particle.  </div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>Spin is one of those quantum states that undergo transitions after absorption of the right amount of energy. It is called spin for historical reasons, and the current theories equate it to some kind of angular momentum even though the particle is not actually spinning<ins style="font-weight: bold; text-decoration: none;">. This </ins>helps with the math since equations for angular momentum work when dealing with spin. Until someone figures out what spin actually is, it is best to consider spin as an entirely internal degree of freedom of a point particle.  </div></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>  Brief overview of spin. Mainly taken from the nice explanation here: [https://en.wikipedia.org/wiki/Spin_%28physics%29 Spin on wikipedia]</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>  Brief overview of spin. Mainly taken from the nice explanation here: [https://en.wikipedia.org/wiki/Spin_%28physics%29 Spin on wikipedia]</div></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>[[Table of particle spins]]</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>[[Table of particle spins]]</div></td></tr> </table>

Milllo https://www.apimba.org/mediawiki/index.php?title=Quantum_spin&diff=289&oldid=prev 2020-03-18T05:27:49Z

<p></p> <table style="background-color: #fff; color: #202122;" data-mw="interface"> <col class="diff-marker" /> <col class="diff-content" /> <col class="diff-marker" /> <col class="diff-content" /> <tr class="diff-title" lang="en"> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">← Older revision</td> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 23:27, 17 March 2020</td> </tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l1">Line 1:</td> <td colspan="2" class="diff-lineno">Line 1:</td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>It is easy to hide ignorance behind mathematics and arcane terminology, and this is a common trick in explanations of quantum mechanics because it is very hard to understand. The fact is, when looking at objects around molecular sizes, the usual rules of interaction no longer apply. A great example is absorption of energy. When you bang a bell with a hammer, no matter how hard or soft you bang it, the energy you use will be absorbed and a sound will be generated. This is not true at the atomic scale. You can shoot billions of photons of energy at an atom and it will have no effect at all unless the amount happens to coincide with one of the energy states of that atom, then &#039;resonance&#039; happens and a photon is absorbed. After absorption of the energy of the photon the atom transitions to an excited state. What happens while the atom is excited depends on whatever the transition was, usually the atom relaxes using some other mechanism and the energy is released again.</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>It is easy to hide ignorance behind mathematics and arcane terminology, and this is a common trick in explanations of quantum mechanics because it is very hard to understand. The fact is, when looking at objects around molecular sizes, the usual rules of interaction no longer apply. A great example is absorption of energy. When you bang a bell with a hammer, no matter how hard or soft you bang it, the energy you use will be absorbed and a sound will be generated. This is not true at the atomic scale. You can shoot billions of photons of energy at an atom and it will have no effect at all unless the amount happens to coincide with one of the energy states of that atom, then &#039;resonance&#039; happens and a photon is absorbed. After absorption of the energy of the photon the atom transitions to an excited state. What happens while the atom is excited depends on whatever the transition was, usually the atom relaxes using some other mechanism and the energy is released again.</div></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr> <tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>Spin is one of those quantum states that undergo transitions after absorption of the right amount of energy. It is called spin for historical reasons, and the current theories equate it to some kind of angular momentum, <del style="font-weight: bold; text-decoration: none;">while others </del>consider spin as an entirely internal degree of freedom of a point particle<del style="font-weight: bold; text-decoration: none;">. These could change if someone figures out what it really is</del>.</div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>Spin is one of those quantum states that undergo transitions after absorption of the right amount of energy. It is called spin for historical reasons, and the current theories equate it to some kind of angular momentum <ins style="font-weight: bold; text-decoration: none;">even though the particle is not actually spinning, this helps with the math since equations for angular momentum work when dealing with spin. Until someone figures out what spin actually is</ins>, <ins style="font-weight: bold; text-decoration: none;">it is best to </ins>consider spin as an entirely internal degree of freedom of a point particle.  </div></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>  Brief overview of spin. Mainly taken from the nice explanation here: [https://en.wikipedia.org/wiki/Spin_%28physics%29 Spin on wikipedia]</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>  Brief overview of spin. Mainly taken from the nice explanation here: [https://en.wikipedia.org/wiki/Spin_%28physics%29 Spin on wikipedia]</div></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>[[Table of particle spins]]</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>[[Table of particle spins]]</div></td></tr> </table>

Milllo https://www.apimba.org/mediawiki/index.php?title=Quantum_spin&diff=288&oldid=prev 2020-03-18T05:24:29Z

<p></p> <table style="background-color: #fff; color: #202122;" data-mw="interface"> <col class="diff-marker" /> <col class="diff-content" /> <col class="diff-marker" /> <col class="diff-content" /> <tr class="diff-title" lang="en"> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">← Older revision</td> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 23:24, 17 March 2020</td> </tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l1">Line 1:</td> <td colspan="2" class="diff-lineno">Line 1:</td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>It is easy to hide ignorance behind mathematics and arcane terminology, and this is a common trick in explanations of quantum mechanics because it is very hard to understand. The fact is, when looking at objects around molecular sizes, the usual rules of interaction no longer apply. A great example is absorption of energy. When you bang a bell with a hammer, no matter how hard or soft you bang it, the energy you use will be absorbed and a sound will be generated. This is not true at the atomic scale. You can shoot billions of photons of energy at an atom and it will have no effect at all unless the amount happens to coincide with one of the energy states of that atom, then &#039;resonance&#039; happens and a photon is absorbed. After absorption of the energy of the photon the atom transitions to an excited state. What happens while the atom is excited depends on whatever the transition was, usually the atom relaxes using some other mechanism and the energy is released again.</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>It is easy to hide ignorance behind mathematics and arcane terminology, and this is a common trick in explanations of quantum mechanics because it is very hard to understand. The fact is, when looking at objects around molecular sizes, the usual rules of interaction no longer apply. A great example is absorption of energy. When you bang a bell with a hammer, no matter how hard or soft you bang it, the energy you use will be absorbed and a sound will be generated. This is not true at the atomic scale. You can shoot billions of photons of energy at an atom and it will have no effect at all unless the amount happens to coincide with one of the energy states of that atom, then &#039;resonance&#039; happens and a photon is absorbed. After absorption of the energy of the photon the atom transitions to an excited state. What happens while the atom is excited depends on whatever the transition was, usually the atom relaxes using some other mechanism and the energy is released again.</div></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr> <tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>Spin is one of those quantum states that undergo transitions after absorption of the right amount of energy. It is called spin for historical reasons, and the current theories equate it to some kind of angular momentum, <del style="font-weight: bold; text-decoration: none;">but that is just the current theory and it </del>could change if someone figures out what it really is.</div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>Spin is one of those quantum states that undergo transitions after absorption of the right amount of energy. It is called spin for historical reasons, and the current theories equate it to some kind of angular momentum, <ins style="font-weight: bold; text-decoration: none;">while others consider spin as an entirely internal degree of freedom of a point particle. These </ins>could change if someone figures out what it really is.</div></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>  Brief overview of spin. Mainly taken from the nice explanation here: [https://en.wikipedia.org/wiki/Spin_%28physics%29 Spin on wikipedia]</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>  Brief overview of spin. Mainly taken from the nice explanation here: [https://en.wikipedia.org/wiki/Spin_%28physics%29 Spin on wikipedia]</div></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>[[Table of particle spins]]</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>[[Table of particle spins]]</div></td></tr> </table>

Milllo https://www.apimba.org/mediawiki/index.php?title=Quantum_spin&diff=277&oldid=prev 2020-03-18T04:53:50Z

<p></p> <table style="background-color: #fff; color: #202122;" data-mw="interface"> <col class="diff-marker" /> <col class="diff-content" /> <col class="diff-marker" /> <col class="diff-content" /> <tr class="diff-title" lang="en"> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">← Older revision</td> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 22:53, 17 March 2020</td> </tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l4">Line 4:</td> <td colspan="2" class="diff-lineno">Line 4:</td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>  Brief overview of spin. Mainly taken from the nice explanation here: [https://en.wikipedia.org/wiki/Spin_%28physics%29 Spin on wikipedia]</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>  Brief overview of spin. Mainly taken from the nice explanation here: [https://en.wikipedia.org/wiki/Spin_%28physics%29 Spin on wikipedia]</div></td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;"></ins></div></td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">[[Table of particle spins]]</ins></div></td></tr> </table>

Milllo https://www.apimba.org/mediawiki/index.php?title=Quantum_spin&diff=272&oldid=prev 2020-03-17T16:53:16Z

<p></p> <table style="background-color: #fff; color: #202122;" data-mw="interface"> <col class="diff-marker" /> <col class="diff-content" /> <col class="diff-marker" /> <col class="diff-content" /> <tr class="diff-title" lang="en"> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">← Older revision</td> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 10:53, 17 March 2020</td> </tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l1">Line 1:</td> <td colspan="2" class="diff-lineno">Line 1:</td></tr> <tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>It is easy to hide ignorance behind mathematics and arcane terminology, and this is a common trick in explanations of quantum mechanics because it is very hard to understand. The fact is, when looking at objects around molecular sizes, the usual rules of interaction no longer apply. A great example is absorption of energy. When you bang a bell with a hammer, no matter how hard or soft you bang it, the energy you use will be absorbed and a sound will be generated. This is not true at the atomic scale. You can shoot billions of photons of energy at an atom and it will have no effect at all unless the amount happens to coincide with one of the <del style="font-weight: bold; text-decoration: none;">transition levels </del>of that atom, then 'resonance' happens and a photon is absorbed. After absorption of the energy of the photon the atom transitions to an excited state. What happens while the atom is excited depends on whatever the transition was, usually the atom relaxes using some other mechanism and the energy is released again.</div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>It is easy to hide ignorance behind mathematics and arcane terminology, and this is a common trick in explanations of quantum mechanics because it is very hard to understand. The fact is, when looking at objects around molecular sizes, the usual rules of interaction no longer apply. A great example is absorption of energy. When you bang a bell with a hammer, no matter how hard or soft you bang it, the energy you use will be absorbed and a sound will be generated. This is not true at the atomic scale. You can shoot billions of photons of energy at an atom and it will have no effect at all unless the amount happens to coincide with one of the <ins style="font-weight: bold; text-decoration: none;">energy states </ins>of that atom, then 'resonance' happens and a photon is absorbed. After absorption of the energy of the photon the atom transitions to an excited state. What happens while the atom is excited depends on whatever the transition was, usually the atom relaxes using some other mechanism and the energy is released again.</div></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>Spin is one of those quantum states that undergo transitions after absorption of the right amount of energy. It is called spin for historical reasons, and the current theories equate it to some kind of angular momentum, but that is just the current theory and it could change if someone figures out what it really is.</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>Spin is one of those quantum states that undergo transitions after absorption of the right amount of energy. It is called spin for historical reasons, and the current theories equate it to some kind of angular momentum, but that is just the current theory and it could change if someone figures out what it really is.</div></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>  Brief overview of spin. Mainly taken from the nice explanation here: [https://en.wikipedia.org/wiki/Spin_%28physics%29 Spin on wikipedia]</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>  Brief overview of spin. Mainly taken from the nice explanation here: [https://en.wikipedia.org/wiki/Spin_%28physics%29 Spin on wikipedia]</div></td></tr> </table>

Milllo https://www.apimba.org/mediawiki/index.php?title=Quantum_spin&diff=271&oldid=prev 2020-03-17T16:51:49Z

<p></p> <table style="background-color: #fff; color: #202122;" data-mw="interface"> <col class="diff-marker" /> <col class="diff-content" /> <col class="diff-marker" /> <col class="diff-content" /> <tr class="diff-title" lang="en"> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">← Older revision</td> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 10:51, 17 March 2020</td> </tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l1">Line 1:</td> <td colspan="2" class="diff-lineno">Line 1:</td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>It is easy to hide ignorance behind mathematics and arcane terminology, and this is a common trick in explanations of quantum mechanics because it is very hard to understand. The fact is, when looking at objects around molecular sizes, the usual rules of interaction no longer apply. A great example is absorption of energy. When you bang a bell with a hammer, no matter how hard or soft you bang it, the energy you use will be absorbed and a sound will be generated. This is not true at the atomic scale. You can shoot billions of photons of energy at an atom and it will have no effect at all unless the amount happens to coincide with one of the transition levels of that atom, then &#039;resonance&#039; happens and a photon is absorbed. After absorption of the energy of the photon the atom transitions to an excited state. What happens while the atom is excited depends on whatever the transition was, usually the atom relaxes using some other mechanism and the energy is released again.</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>It is easy to hide ignorance behind mathematics and arcane terminology, and this is a common trick in explanations of quantum mechanics because it is very hard to understand. The fact is, when looking at objects around molecular sizes, the usual rules of interaction no longer apply. A great example is absorption of energy. When you bang a bell with a hammer, no matter how hard or soft you bang it, the energy you use will be absorbed and a sound will be generated. This is not true at the atomic scale. You can shoot billions of photons of energy at an atom and it will have no effect at all unless the amount happens to coincide with one of the transition levels of that atom, then &#039;resonance&#039; happens and a photon is absorbed. After absorption of the energy of the photon the atom transitions to an excited state. What happens while the atom is excited depends on whatever the transition was, usually the atom relaxes using some other mechanism and the energy is released again.</div></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">Spin is one of those quantum states that undergo transitions after absorption of the right amount of energy. It is called spin for historical reasons, and the current theories equate it to some kind of angular momentum, but that is just the current theory and it could change if someone figures out what it really is.</ins></div></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>  Brief overview of spin. Mainly taken from the nice explanation here: [https://en.wikipedia.org/wiki/Spin_%28physics%29 Spin on wikipedia]</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>  Brief overview of spin. Mainly taken from the nice explanation here: [https://en.wikipedia.org/wiki/Spin_%28physics%29 Spin on wikipedia]</div></td></tr> </table>

Milllo https://www.apimba.org/mediawiki/index.php?title=Quantum_spin&diff=270&oldid=prev 2020-03-17T16:48:03Z

<p></p> <table style="background-color: #fff; color: #202122;" data-mw="interface"> <col class="diff-marker" /> <col class="diff-content" /> <col class="diff-marker" /> <col class="diff-content" /> <tr class="diff-title" lang="en"> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">← Older revision</td> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 10:48, 17 March 2020</td> </tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l1">Line 1:</td> <td colspan="2" class="diff-lineno">Line 1:</td></tr> <tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>Brief overview of spin. Mainly taken from the nice explanation here: [https://en.wikipedia.org/wiki/Spin_%28physics%29 Spin on wikipedia]</div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">It is easy to hide ignorance behind mathematics and arcane terminology, and this is a common trick in explanations of quantum mechanics because it is very hard to understand. The fact is, when looking at objects around molecular sizes, the usual rules of interaction no longer apply. A great example is absorption of energy. When you bang a bell with a hammer, no matter how hard or soft you bang it, the energy you use will be absorbed and a sound will be generated. This is not true at the atomic scale. You can shoot billions of photons of energy at an atom and it will have no effect at all unless the amount happens to coincide with one of the transition levels of that atom, then 'resonance' happens and a photon is absorbed. After absorption of the energy of the photon the atom transitions to an excited state. What happens while the atom is excited depends on whatever the transition was, usually the atom relaxes using some other mechanism and the energy is released again.</ins></div></td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div> </div></td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div> </div></td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;"> </ins>Brief overview of spin. Mainly taken from the nice explanation here: [https://en.wikipedia.org/wiki/Spin_%28physics%29 Spin on wikipedia]</div></td></tr> </table>

Milllo