Quantum spin - Revision history

Milllo at 01:17, 15 April 2020

2020-04-15T01:17:28Z

Milllo at 02:40, 21 March 2020

2020-03-21T02:40:31Z

Milllo at 17:02, 20 March 2020

2020-03-20T17:02:21Z

Milllo at 05:28, 18 March 2020

2020-03-18T05:28:42Z

Milllo at 05:27, 18 March 2020

2020-03-18T05:27:49Z

Milllo at 05:24, 18 March 2020

2020-03-18T05:24:29Z

Milllo at 04:53, 18 March 2020

2020-03-18T04:53:50Z

Milllo at 16:53, 17 March 2020

2020-03-17T16:53:16Z

Milllo at 16:51, 17 March 2020

2020-03-17T16:51:49Z

Milllo at 16:48, 17 March 2020

2020-03-17T16:48:03Z

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 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.
- Brief overview of spin. Mainly taken from the nice explanation here: [https://en.wikipedia.org/wiki/Spin_%28physics%29 Spin on wikipedia]
+Brief overview of spin. Mainly taken from the nice explanation here: [https://en.wikipedia.org/wiki/Spin_%28physics%29 Spin on wikipedia]
 [[Table of particle spins]]

← Older revision		Revision as of 02:40, 21 March 2020
Line 1:		Line 1:
−	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.	+	It is easy to hide ignorance behind mathematics and arcane terminology, and this is a common trick in explanations of [[Quantum Mechanics\|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.

	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.		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.

@@ Line 1: / Line 1: @@
 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.
-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.
+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.
   Brief overview of spin. Mainly taken from the nice explanation here: [https://en.wikipedia.org/wiki/Spin_%28physics%29 Spin on wikipedia]
 [[Table of particle spins]]

@@ Line 1: / Line 1: @@
 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.
-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.
+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.
   Brief overview of spin. Mainly taken from the nice explanation here: [https://en.wikipedia.org/wiki/Spin_%28physics%29 Spin on wikipedia]
 [[Table of particle spins]]

@@ Line 1: / Line 1: @@
 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.
-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, while others consider spin as an entirely internal degree of freedom of a point particle. These could change if someone figures out what it really is.
+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.
   Brief overview of spin. Mainly taken from the nice explanation here: [https://en.wikipedia.org/wiki/Spin_%28physics%29 Spin on wikipedia]
 [[Table of particle spins]]

← Older revision		Revision as of 04:53, 18 March 2020
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	Brief overview of spin. Mainly taken from the nice explanation here: [https://en.wikipedia.org/wiki/Spin_%28physics%29 Spin on wikipedia]		Brief overview of spin. Mainly taken from the nice explanation here: [https://en.wikipedia.org/wiki/Spin_%28physics%29 Spin on wikipedia]
		+
		+	[[Table of particle spins]]

← Older revision		Revision as of 16:51, 17 March 2020
Line 1:		Line 1:
	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.		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.

		+	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.

	Brief overview of spin. Mainly taken from the nice explanation here: [https://en.wikipedia.org/wiki/Spin_%28physics%29 Spin on wikipedia]		Brief overview of spin. Mainly taken from the nice explanation here: [https://en.wikipedia.org/wiki/Spin_%28physics%29 Spin on wikipedia]

← Older revision		Revision as of 16:48, 17 March 2020
Line 1:		Line 1:
−	Brief overview of spin. Mainly taken from the nice explanation here: [https://en.wikipedia.org/wiki/Spin_%28physics%29 Spin on wikipedia]	+	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.
		+
		+
		+	Brief overview of spin. Mainly taken from the nice explanation here: [https://en.wikipedia.org/wiki/Spin_%28physics%29 Spin on wikipedia]