Difference between revisions of "Photon"
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: '''Photons''' carry [[momentum]] without carrying [[mass]] and are therefore able to change the direction of motion of other [[Subatomic Particle|subatomic particles]]. | : '''Photons''' carry [[momentum]] without carrying [[mass]] and are therefore able to change the direction of motion of other [[Subatomic Particle|subatomic particles]]. | ||
: '''Photons''' do not carry [[Electrical Charge|charge]], but allow [[Subatomic Particle|particles]] with [[Electrical Charge|charge]] to exchange [[momentum]]. | : '''Photons''' do not carry [[Electrical Charge|charge]], but allow [[Subatomic Particle|particles]] with [[Electrical Charge|charge]] to exchange [[momentum]]. | ||
| + | |||
| + | ===Equations=== | ||
| + | : The equation for the [[momentum]] of a '''photon''' is: | ||
| + | |||
| + | <math>p = \frac{h}{\lambda}</math> | ||
| + | |||
| + | Where | ||
| + | |||
| + | <math>p =</math> The [[momentum]] of a the '''photon'''. | ||
| + | |||
| + | <math>h = </math> [[Planck's Constant]] (<math>6.63x10^{-34}Js</math>) | ||
| + | |||
| + | <math>\lambda =</math> The [[wavelength]] of the '''photon'''. | ||
Revision as of 10:46, 19 July 2019
Key Stage 5
Meaning
Photons (\(\gamma\)) are bosons responsible for mediating the electromagnetic interaction and are the particle associated with electromagnetic waves.
About Photons
- The photon is denoted with the lower case Greek letter \(\gamma\) (gamma).
- Photons have no mass and therefore can mediate the electromagnetic interaction over an infinite range.
- Photons carry momentum without carrying mass and are therefore able to change the direction of motion of other subatomic particles.
- Photons do not carry charge, but allow particles with charge to exchange momentum.
Equations
- The equation for the momentum of a photon is\[p = \frac{h}{\lambda}\]
Where
\(p =\) The momentum of a the photon.
\(h = \) Planck's Constant (\(6.63x10^{-34}Js\))
\(\lambda =\) The wavelength of the photon.