[ELI5] Why does light oscillate?

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Maybe this is a stupid question, but I dont understand what force is driving photons in light beams to go up and down, making a sine wave. How often in which it oscillates determines the frequency yeah, but why does it do that in the first place? And why is it that when light is emitted, instead of scattering like individual particles, the photons stay in a line. Like there’s a force that is keeping them in a straight line, and theres a force causing them to oscillate. Maybe they arent forces, but I just don’t get it.

In: Physics

10 Answers

Anonymous 0 Comments

No photons don’t oscillate. There are 2 distinct ways of looking at light

1) Particle(photon)

2) Wave

When you consider light as a group of photons they do not exhibit any property of waves.

When you consider light as a wave they do not exhibit any property of particle.

Light is not photon and wave both. But in some cases it acts a particle and in some cases as a wave.

In some cases where light acts as a particle you might think that light can’t do this as waves can’t do this but light still does that totally not acting at all like a wave. But in other cases it will start acting like a wave and won’t show any characteristics of a particle.

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