# Why electromagnetic wave can travel in vacuum?

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The propagation of electromagnetic waves either in a certain medium or in vacuum is due the the mutual changes between the electric and magnetic field. … These variations in electric and magnetic fields fields lead to the transfer of the energy which is carried by the EM wave.

## Why do electromagnetic waves travel through vacuum?

Electromagnetic radiation can pass through a vacuum as both electric and magnetic fields are properties of space and not matter and these fields are everywhere in the universe. Therefore as these fields are present in a vacuum the electromagnetic radiation can pass through vacuums by oscilating the fields.

## Why can electromagnetic waves travel without a medium?

An EM wave can travel without a material medium—that is, in a vacuum or space empty of matter—and does not lose energy as it moves. In theory, an EM wave can travel forever. Because they do not need a medium, EM waves can pass through outer space, which is a near vacuum.

## When electromagnetic waves travel in a vacuum What is their speed?

An electromagnetic wave transports its energy through a vacuum at a speed of 3.00 x 108 m/s (a speed value commonly represented by the symbol c).

## How do EM waves propagate in vacuum?

Electromagnetic waves do not need a medium to propagate, they can pass through vacuum easily which is a near vacuum. Electromagnetic waves spread outward in all directions from the source of disturbance. The waves then continue to travel until something ineterferes them.

## How do signals travel in a vacuum?

Electromagnetic waves can transmit energy through a vacuum. Once your radio receives the signal, it can convert the signal into sound, which will travel through the air in your space suit without a problem. … The collision would make a sound that you could hear, even though you’re in space.

## Can mechanical waves travel through vacuum?

Because mechanical waves rely on particle interaction in order to transport their energy, they cannot travel through regions of space that are void of particles. That is, mechanical waves cannot travel through a vacuum.

## Do electromagnetic waves require a vacuum?

Electromagnetic waves differ from mechanical waves in that they do not require a medium to propagate. This means that electromagnetic waves can travel not only through air and solid materials, but also through the vacuum of space. … This proved that radio waves were a form of light!

## Can light travel through a vacuum?

Light traveling through a vacuum moves at exactly 299,792,458 meters (983,571,056 feet) per second. That’s about 186,282 miles per second — a universal constant known in equations and in shorthand as “c,” or the speed of light.

## Which radiation travels the fastest in a vacuum?

Parts of the electromagnetic spectrum

• Electromagnetic waves carry energy. …
• Electromagnetic waves do not need matter to travel through – they can travel through empty space (a vacuum).
• In a vacuum, all electromagnetic waves travel at 3 × 10 8 m s − 1 – the fastest speed possible.
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## Do electromagnetic waves have the same frequency in a vacuum?

Electromagnetic waves include visible light, radio waves, X-rays, and so on. What distinguishes these different bands of light is their frequency (or wavelength). But what they all have in common is that they travel at the same speed in vacuum.

## Why do electromagnetic waves travel at the speed of light?

Ergo, light is made of electromagnetic waves and it travels at that speed, because that is exactly how quickly waves of electricity and magnetism travel through space. … But as we all know, space is very different than time.