Where does a photon get its energy?
Since photons (particles of light) have no mass, they must obey E = pc and therefore get all of their energy from their momentum.
On what does the energy of a photon depend?
The energy of a photon depends on radiation frequency; there are photons of all energies from high-energy gamma- and X-rays, through visible light, to low-energy infrared and radio waves. All photons travel at the speed of light.
What is photon made of?
A photon is a tiny particle that comprises waves of electromagnetic radiation. As shown by Maxwell, photons are just electric fields traveling through space. Photons have no charge, no resting mass, and travel at the speed of light.
Where did the first photons come from?
Fusion occurs in the sun’s innermost core, when two atoms merge, releasing energy and light in the process. Photons of light are first created in the sun’s center. Over tens of thousands of years, the photons travel a “drunken walk,” zigzagging their way from atom to atom until they reach the surface.
How are photons created?
Photon Created from the Vibration of a Particle In molecules and atoms, temperature is a measurement of the average kinetic energy (vibration) of the atom. At absolute zero temperature (0 K), there is no vibration and no photons are created. As an atom increases temperature, it is because the atom is vibrating faster.
What is the energy of a photon?
A photon is characterized either by wavelength (λ) or an equivalent energy E. The energy of a photon is inversely proportional to the wavelength of a photon. λ = wavelength of the light.
Where do photons come from?
Photons can be created, or radiated, by other energy sources, for example electricity (like a light bulb), nuclear reactions (like the sun or radioactivity), or a particle collision. When photons collide or reflect they are actually in a sense being absorbed (annihilated) and a new photon is emitted (created).
Where do photos get their energy from?
Photos get their energy from all sorts of events, but that energy goes into creating the photon, rather than accelerating it. Photons can be created, or radiated, by other energy sources, for example electricity (like a light bulb), nuclear reactions (like the sun or radioactivity), or a particle collision.
Do photons travel at the speed of light?
Photons are massless, though, so they travel at the speed of light regardless of what amount of energy you put into them. (It doesn’t really make sense to talk about accelerating a photon, since it will always travel at the speed of light.)