Itoero Posted November 24, 2017 Posted November 24, 2017 On 15-11-2017 at 5:26 PM, Strange said: For the same reason it is not made of spin or momentum or wavelength. These are all just properties of a photon. Other particles have energy, they are not made of energy either. Spin, momentum and wavelength are (measured) properties of energy. And a photon is always on the move, it only has kinetic energy. You can define energy as the ability to do work (it depends on your interpretation). The ability to do work is stored force. When you excite an atomic electron to a higher energy state, you then increase the stored force (F). F=ma and according to mass-energy equivalence: F=(E/c²)a. By increasing the stored force in an electron, you cause some of it's energy to be accelerated(F=(E/c²)a) which forms a photon. Gluons and photons (massless particles) are imo just energy. A gluon is an elementary particle that acts as the exchange particle (or gauge boson) for the strong force between quarks. It is analogous to the exchange of photons in the electromagnetic force between two charged particles. On 15-11-2017 at 2:19 AM, Mordred said: Nothing is made up of energy. It is a property not a thing. "energy is the ability to perform work" nothing more If you see how photons are formed then you'll see it's a released/exchanged property. On 14-11-2017 at 7:48 PM, StringJunky said: You can't take a photograph of energy but you can of something that has it. It does not have independent existence, just like 'length' doesn't. I like the comparison with length. But what does it mean that It does not have independent existence? 'Knowledge' does not have independent existence but you can exchange it with other people. You can only observe photons because they 'interact' with particles and they are an exchanged or released property... I don't call that having an independent existence. On 14-11-2017 at 9:15 PM, swansont said: Quote No. Spin is angular momentum. There's no inherent relationship between the two. No matter what the energy of a photon is, the spin will always be 1. Ok but the spin is imo a property of the kind of energy, not the amount of energy. Angular momentum (rarely, moment of momentum or rotational momentum) is the rotational equivalent of linear momentum. The rotational property of a photon does not change due to energy.
Strange Posted November 24, 2017 Posted November 24, 2017 30 minutes ago, Itoero said: Spin, momentum and wavelength are (measured) properties of energy. don't be silly. Kinetic energy doesn't have spin, momentum or wavelength. Thermal energy doesn't have spin, momentum or wavelength. Potential energy doesn't have spin, momentum or wavelength. A stationary electron has zero kinetic energy but still has the same spin. Quote And a photon is always on the move, it only has kinetic energy. Kinetic energy is a property of massive objects. Photons have no mass. 32 minutes ago, Itoero said: The rotational property of a photon does not change due to energy. Yep. Because spin is independent of and nothing to do with energy. Why do you keep posting all this nonsense? Reported for posting made-up crap in the mainstream science section.
swansont Posted November 24, 2017 Posted November 24, 2017 3 hours ago, Itoero said: Spin, momentum and wavelength are (measured) properties of energy. And a photon is always on the move, it only has kinetic energy. Interesting that you would say "it only has KE" as that's a description which implies it's a property. spin, momentum and wavelength are not properties of energy. Angular momentum and energy, for example, are independent QM observables. Angular momentum commutes with the Hamiltonian for e.g. a central force. 3 hours ago, Itoero said: You can define energy as the ability to do work (it depends on your interpretation). The ability to do work is stored force. No, it's not stored force. 3 hours ago, Itoero said: Ok but the spin is imo a property of the kind of energy, not the amount of energy. Angular momentum (rarely, moment of momentum or rotational momentum) is the rotational equivalent of linear momentum. The rotational property of a photon does not change due to energy. Your opinion doesn't matter. Show the physics that says this. That the spin is independent of the energy means that they are not related.
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