how can you say that light always travel in vacum
Answers
Answered by
2
Good question. First, let's think about why sound does not travel forever. Sound cannot travel through empty space; it is carried by vibrations in a material, or medium (like air, steel, water, wood, etc). As the particles in the medium vibrate, energy is lost to heat, viscous processes, and molecular motion. So, the sound wave gets smaller and smaller until it disappears.
Answered by
2
hlo here is your ans....... light does not need any medium .. . ... ......
No light does not need medium to travel.Its an electromagnetic(EM) wave.All EM waves travel independent of medium. In contrast mechanical waves need medium,sound waves,shock waves are mechanical and they need medium to transfer energy or travel. Light does not need a medium to travel.
No light does not need medium to travel.Its an electromagnetic(EM) wave.All EM waves travel independent of medium. In contrast mechanical waves need medium,sound waves,shock waves are mechanical and they need medium to transfer energy or travel. Light does not need a medium to travel.
Similar questions