does light travel as particles or waves and why?

Answer 1

Probability waves. as soon as you measure it its no longer light in its natural form and becomes a particle, but thats not real light.

Answer 2

Both.

Light in particle form is a photon and, as a wave, it is known as many things. Light has little change in property when it behaves as a particle, however when acting as a wave its properties change when the frequency changes (along with the wavelength as they are related). When the particles vibrate slowly they form long waves like infrared rays. When they are shorter and vibrate faster they form short waves like ultraviolet light.

When I say that the proton vibrates faster or slower I simply mean that the change in position in the horizontal (relative to the direction it is traveling in) is creating a different type of wave. The speed the wave travels though is always constant, at the speed of light of course which is 125000 miles per second.

Just a footnote: Amplitude is simply half the distance traveled in the horizontal (relative to the direction of its path).

Answer 3

Look up theory of duality. Light is particles called photons that move in a wave pattern

Answer 4

physisits are not totally sure about light b/c it is extremely difficult to study. physics shows that it acts as both, which means we really have absolutely no idea how it works and need the through away they wave and particle theory and come up with a new one.

Answer 5

Actually both ways. The wave amplitude means that a larger number of "photons" occupy a certain part of the wave as opposed to other parts.