# How Can Light Travel Through A Vacuum But Sound Cannot?

## How does light travel through empty space?

Electromagnetic waves are waves that can travel through matter or through empty space.

However, when light travels in matter, it interacts with the atoms and molecules in the material and slows down.

As a result, light travels fastest in empty space, and travels slowest in solids..

## How does light behave in a vacuum?

Light has dual-nature Particle does not need to interact with a medium. It travels through vacuum space at the speed of 186,000 miles per second. … So, as mentioned, light behaves like a wave traveling through a medium by vibrating, while interacting with a vacuum space light behaves like a particle.

## Does light exist in space?

Space is full of light, but it doesn’t look like it. The color black usually signals the absence of light. But inside the solar system, space is filled with light.

## What can sound not travel through?

Sound, however, cannot travel through a vacuum: it always has to have something to travel through (known as a medium), such as air, water, glass, or metal.

## How does light behave in space?

Light can also behave like a stream of particles, but we’re just going to look at some basic things that make it look like a wave. All light waves travel ata speed of about 300,000 (300 thousand) kilometers per second in a vacuum such as space. … Scientists often describe the light you can see as “visible” light.

## What travels faster than light in a vacuum?

Tachyons are hypothetical particles that travel faster than light. According to Einstein’s special theory of relativity – and according to experiment so far – in our ‘real’ world, particles can never travel faster than light.

## What sound Cannot travel through a vacuum?

Sound is a mechanical wave and cannot travel through a vacuum. Light is an electromagnetic wave and can travel through the vacuum of outer space. Sound is a Longitudinal Wave. Sound is a Pressure Wave.

## Can light travel forever?

If there were no objects to absorb light, it would keep traveling forever. Light is made up of particles called photons that travel like waves. Unless they interact with other particles (objects), there is nothing to stop them. … If it is infinite, the light would travel forever.

## Does light travel differently in a vacuum?

In contrast, light waves can travel through a vacuum, and do not require a medium. In empty space, the wave does not dissipate (grow smaller) no matter how far it travels, because the wave is not interacting with anything else. … However, light can also travel within some materials, like glass and water.

## Will sound travel in a vacuum?

Sound can leap across a vacuum after all. … Sound waves are travelling vibrations of particles in media such as air, water or metal. So it stands to reason that they cannot travel through empty space, where there are no atoms or molecules to vibrate.

## Why can we see light in space but not hear sound?

No, you cannot hear any sounds in near-empty regions of space. Sound travels through the vibration of atoms and molecules in a medium (such as air or water). In space, where there is no air, sound has no way to travel.

## Why can light travel through a vacuum?

In contrast, light waves can travel through a vacuum, and do not require a medium. In empty space, the wave does not dissipate (grow smaller) no matter how far it travels, because the wave is not interacting with anything else. … In this case, some light is absorbed and lost as heat, just like sound.

## Can you see light in a vacuum?

Light is not visible in a vacuum. … We can see real objects only when they are within light field or waves created by a light source however some animals like bats may be able to ‘see’ objects through sound waves.

## How fast does light travel in a vacuum?

299,792 kilometers per secondThe speed of light in a vacuum is 186,282 miles per second (299,792 kilometers per second), and in theory nothing can travel faster than light. In miles per hour, light speed is, well, a lot: about 670,616,629 mph. If you could travel at the speed of light, you could go around the Earth 7.5 times in one second.