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299,792,458 meters (186,282 miles) per second

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15y ago

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Can a light travel through a vacuum?

Yes. Refer to stars - space is a vaccuum (though not a perfect vaccuum) and because light can travel through a vaccuum, we have day and night here on Earth. We can even see light from other stars light years away.


In a vaccuum light can travl at 300km in 1?

In 1 microsecond.


What is the effect on the speed of light when temperatures rise in the medium?

When temperature rises, the density of the medium changes. Speed of light through a medium is inversely proportional to the density of medium. So when the temperature increases, the density decreases and the speed of light in that medium increases. Note that this is the indirect effect of temperature. If light is travelling through vaccuum , then the temperature will have no effect on the speed of light.


How fast are cosmic rays?

Cosmic rays are electromagnetic energy - like light. They quite naturally travel at the speed of light, which is 299,792,458 meters per second. Note that the cited speed applies to a vaccuum. Their speed appears to be less when they are passing through air or another medium. Sorry, I believe that this is incorrect. Cosmic rays are not light consisting of photons. At least 90% of them are high energy particles that consist of protons. They may be able to move close to the speed of light, but do not travel at the speed of light.


Speed of sound is maximum in which like in steel or solid and if anything else than please specify?

Speed of sound is maximum in STeel or solid.. if we compare the speed of sound in different mediums like vaccuum,water,solid..we will find it decreases with maximum in soild then liquid and then vaccuum


Is it the speed of light or light speed?

Is what the speed of light or light speed.ANSWER300,000 km/s


In a vaccuum all electromagnetic waves have the same?

Velocity (speed). It is always equal to 3x10^8 m/s (300,000,000 meters per second)


What do vaccuum lines do?

it takes the rubbish through to the vaccuum cleaners inner part where the rubbish is kept


Is it light speed or the speed of light?

speed of light I think well it sounds right:)


Which was the fastest the speed of light or the speed of sound?

speed of light


How far in km does light travel in 60 sec?

its known that the speed of light is =3 x 108 m/s and speed=distance/time distance=speed x time =3 x 108 m/s x 60 =18 x 109 metres its also known that 1000m=1kilometre 18 x 109 metres=18 x 106 kilometres hence distance travelled by light in 60 seconds is 18 x 106 kilometres in vaccuum


How was the speed of light measured?

In light speed.