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17. The photon is an elementary particle in the standard model of particle physics. It does not have a wavelength. It is characterized in the table as a point particle with mass zero and spin one. Its energy is given by E = hν E = h ν, where ν ν is the frequency of the classical electromagnetic wave which can be built up by photons of the ...
- Does a single photon have a wavelength or not? [duplicate]
If the state of the field is such that there is, whenever...
- Why doesn't De Broglie's wave equation work for photons?
So the wavelength relation works for photons too, you just...
- Does a single photon have a wavelength or not? [duplicate]
A photon (from Ancient Greek φῶς, φωτός (phôs, phōtós) 'light') is an elementary particle that is a quantum of the electromagnetic field, including electromagnetic radiation such as light and radio waves, and the force carrier for the electromagnetic force. Photons are massless particles that always move at the speed of light ...
Feb 8, 2021 · If the state of the field is such that there is, whenever you look, only one excitation present, then we say the field is in a single-mode, single photon state. This photon then has a well-defined frequency (ν=ω/2π) and wavelength (λ=2π/k). Frequency and wavelength of photons. And if you look on this site, you find numerous occasions where ...
So the wavelength relation works for photons too, you just have to use their momentum. As a side effect you can derive that $\lambda = hc/E$ for photons. The equation you included in your question is something different: it gives the Compton wavelength of a particle, which is the wavelength of a photon that has the same electromagnetic energy as the particle's mass energy.
- Photon Properties
- Word Origin
- Photon Symbol
- History
- How Are Photons produced?
- How to Calculate The Energy of A Photon
- References
Photons have the following properties: 1. A photon has zero rest mass. However, because it is moving, it has momentum. So, while packets of light have no mass, they can exert pressure. A photon’s momentum is hν/c, where h is Planck’s constant, ν is the photon’s frequency, and cis the speed of light. 2. A photon has no electrical charge. It is not d...
The name “photon” comes from the Greek word for light, phôs. Gilbert Newton Lewis coined the term in his December 1926 letter to Nature. However, it had been used by physicists and physiologists prior to this date, mainly referring to the illumination of the eye. Arthur Compton popularized the term in his work, giving Lewis credit for the word.
The Greek letter gamma (γ) is the symbol for the photon, probably deriving from work on gamma rays, which were discovered by Paul Villard in 1900. Gamma decay releases photons. The symbol hν refers to photon energy, where h is Planck’s constant and the Greek letter nu (ν) is the photon frequency. Another symbol is hf, where fis the photon frequency...
The concept of the photon arose from Albert Einstein’s proposed explanation for the photoelectric effect in 1905. The photoelectric effect is the emission of electrons when light strikes a material. Einstein said that the effect was explainable, providing light behaved as a group of discrete (quantized) energy packets rather than solely as a wave. ...
Photons arise as a result of both spontaneous and stimulated emission. Some types of radioactive decay (e.g., gamma and beta decay) release photons, as do particle interactions. Accelerating a charged particle causes photon emission as synchrotron radiation. The annihilation of a particle and its antiparticle (e.g., an electron and positron) result...
There are two main equations for calculating the energy of a photon: E = hν Here, E is the photon energy, h is Planck’s constant, and νis the photon frequency. E = hc / λ Here, E is photon energy, h is Planck’s constant, c is the speed of light, and λis the photon wavelength.
Alonso, M.; Finn, E.J. (1968). Fundamental University Physics. Vol. III: Quantum and Statistical Physics. Addison-Wesley. ISBN 978-0-201-00262-1.Feynman, Richard (1985). QED: The Strange Theory of Light and Matter. Princeton University Press. ISBN 978-0-691-12575-6.Halliday, David; Resnick, Robert; Walker, Jerl (2005). Fundamental of Physics(7th ed.). John Wiley and Sons, Inc. ISBN 978-0-471-23231-5.Lakes, Roderic (1998). “Experimental Limits on the Photon Mass and Cosmic Magnetic Vector Potential”. Physical Review Letters. 80 (9): 1826. doi:10.1103/PhysRevLett.80.1826Photons represent the entire spectrum of electromagnetic radiation. This includes radio waves, gamma-rays, and visible light. Like many other particles governed by quantum mechanics, photons have the characteristics of both waves and particles. Photons travel in a wave-like fashion, in which the local electric and magnetic field oscillates in ...
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Figure 29.3.1 29.3. 1: The EM spectrum, showing major categories as a function of photon energy in eV, as well as wavelength and frequency. Certain characteristics of EM radiation are directly attributable to photon energy alone. Photons act as individual quanta and interact with individual electrons, atoms, molecules, and so on.
