A vacuum doesn't travel. All electromagnetic waves
travel at the same speed in vacuum.
c.All electromagnetic radiation travels at the same speed in a vacuum; it is labelled c.
All electromagnetic waves travel at the same speed in vacuum.
In a vacuum, all electromagnetic waves have the same speed: about 300,000 kilometers per second.In a vacuum, all electromagnetic waves have the same speed: about 300,000 kilometers per second.In a vacuum, all electromagnetic waves have the same speed: about 300,000 kilometers per second.In a vacuum, all electromagnetic waves have the same speed: about 300,000 kilometers per second.
Neither. In vacuum, all electromagnetic radiation has the same speed, regardless of wavelength. It's the speed we call "the speed of light", but it applies to all of those other electromagnetic phenomena too.
The fastest that an electromagnetic wave can travel is 299,792,458 meters per second.That's the "speed of light" ... and all other electromagnetic radiation ... in vacuum.
c.All electromagnetic radiation travels at the same speed in a vacuum; it is labelled c.
All electromagnetic waves travel at the same speed in vacuum.
In a vacuum, all electromagnetic waves have the same speed: about 300,000 kilometers per second.In a vacuum, all electromagnetic waves have the same speed: about 300,000 kilometers per second.In a vacuum, all electromagnetic waves have the same speed: about 300,000 kilometers per second.In a vacuum, all electromagnetic waves have the same speed: about 300,000 kilometers per second.
Neither. In vacuum, all electromagnetic radiation has the same speed, regardless of wavelength. It's the speed we call "the speed of light", but it applies to all of those other electromagnetic phenomena too.
The fastest that an electromagnetic wave can travel is 299,792,458 meters per second.That's the "speed of light" ... and all other electromagnetic radiation ... in vacuum.
They are both forms of electromagnetic radiation and, in a vacuum, would travel at the same speed.
In vacuum, every imaginable wavelength of electromagnetic radiation, from longer than radio waves to shorter than gamma rays, travels at 299,792,458 meters per second.
The entire electromagnetic spectrum travels at the same speed. The speed of light.
The same. Both are electromagnetic waves; in a vacuum, they both travel at the speed of light.
All electromagnetic waves travel at the same speed in a vacuum -- the speed of light.
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