Can A Photon Travel With Or Without A Medium?

Can A Photon Travel With Or Without A Medium? Photons only travel in a vacuum. They alternate between photons and something else when traveling through a physical medium. How does a photon travel? Since photons are massless, they travel at c, which is called the speed of light because the photon was the first known

Does Light Travel Forever?

Does Light Travel Forever? Does light travel forever? Light is an electromagnetic wave that doesn’t need a medium to propagate. The strength of the wave, however, can get weaker with the distance, but as long as nothing absorbs it, the light keeps on travelling forever. Does light keep going forever? Light is a self-perpetuating electromagnetic