View source for Photon is a Particle

==Full Title==
This page enumerates the positive and negative statements in discussion of the assertion that a [[Photon is a Particle]].

==Positive==
The Compton effect show that when the photon hits an object, it passes momentum to that object.

The Compton effect, or Compton scattering, cannot be explained on the basis of the wave properties of radiation (from this point of view, the wavelength of the scattered radiation should be the same as the original). It is therefore one of the phenomena proving the existence of the photon. The experiment proving the Compton effect also confirmed that photons can behave as particles as well as waves.

==Negative==
It is not possible to know where a photon in motion actually is (The Heisenberg [[Uncertainty]] principle).

It travels all the paths from origin to destination

It travels only the path with the shortest time between o and d

==References==

[[Category: Physics]]