electromagentic waves speed

AnswerThe speed of electromagnetic radiation of all kinds is the same universal constant that is defined to be exactly c = 299,792,458 metres per second (186,282 miles per second). All electromagnetic waves travel at the same speed through empty space. That speed, called the speed of light, is about 300 million meters per second (3.0 x 108 m/s). Nothing else in the universe is known to travel this fast. The sun is about 150 million kilometers (93 million miles) from Earth, but it takes electromagnetic radiation only 8 minutes to reach Earth from the sun. If you could move that fast, you would be able to travel around Earth 7.5 times in just 1 second!

Wavelength and Frequency of Electromagnetic Waves

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Electromagnetic waves speed

The speed of electromagnetic radiation of all kinds is the same universal constant that is defined to be exactly c = 299,792,458 metres per second (186,282 miles per second).

Do electromagnetic waves travel at different speeds?

Like mechanical waves, electromagnetic waves travel at different speeds in different materials. However, in a vacuum all electromagnetic waves travel at 3 X 108 meters per second (m/s) (commonly called the speed of light).

How fast is an electromagnetic wave?

All electromagnetic waves travel across space at the speed of light, which is about 300 million meters per second (3.0 x 108 m/s). Electromagnetic waves vary in wavelength and frequency.

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