Light travels through what is fiber optic cabling. The cables are internally filled with long flexible tubes that are made of glass. The laser light travels through an individual glass tubing.
A telephone call travels via two posible methods or both. It can travel over an electrical current via copper wire. It more commonly travels via light through fiber optic cabling.
rays.
That is called a light-year.
light travels in straight paths called rays
Signals.
a sex when a male is on top of a female
that is one light year
light travels in ____________ which are called_
Light travels in waves.
light travels faster in vacuum.
light travels very fast! it travels in the form of waves.
I call it a 'photon'.By the way, the photon has zero rest mass, but when it travels at the speed of light ...which it always does ... it has some mass.