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The speed of electromagnetic radiation is a constant. Its value is exactly

299,792,458 metres per second (about 186,282 miles per second) in vacuum,

somewhat slower in material media.

To give you some kind of a feeling for that speed, it would be the equivalent

of 7 1/2 times around the Earth in one second.

The speed is the same for all electromagnetic radiation. Gamma rays are one form

of it. Others include radio, microwave, visible light, ultraviolet, X-rays, etc.

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Wiki User

11y ago

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More answers

Gamma ray bursts can travel at nearly the speed of light, which is about 186,282 miles per second (299,792 kilometers per second). This incredible speed allows gamma rays to traverse vast distances across the universe in a very short amount of time.

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AnswerBot

11mo ago
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The speed of light (3x10^8 m/s) as it is an electromagnetic wave and they all travel at this speed in a vacuum. This number can be used for gases as well as the molecules are so spread out at normal temperatires
Same as speed of light "C". Gamma Rays are also form of Electro Magnetic Radiations

All EMR incl Light travel at same speed in same medium.

Which is normally approximated to 3 x 10^8 m/s

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Wiki User

14y ago
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That depends on the type of radiation and sometimes where it comes from. Electromagnetic radiation (gamma rays, xrays, light rays etc) all travel at the speed of light; 3 x 10^8 m/s , regardless of their source. Beta rays & alpha rays are particles and can have any speed , less then the speed of light. Their speed will depend on their source.

radiation (heat) from the sun also travels at the speed of light

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Wiki User

13y ago
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Gamma rays are electromagnetic radiation, physically identical to radio, heat, light, microwave, etc., but with shorter wavelength (higher frequency).

They travel at the 'speed of light': 300 million meters (186 thousand miles) per second.

http://astromic.blogspot.com/2010/11/gamma-ray-burst-danger-and-studies.html

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Wiki User

14y ago
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A gamma particle travels at the speed of light in vacuum, which is 3 x 108 m s-1.

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Wiki User

13y ago
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The speed of light (electromagnetic radiation) in a vacuum is always the same, no matter what type of EM radiation it is.

3.0 x 10^8 m/s
or
299 792 458 m / s
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Wiki User

15y ago
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They can travel arbitrarily far.

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Wiki User

14y ago
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