# What Is the Speed of Light?

The speed of light is the speed at which light travels in a vacuum; the constancy and universality of the speed of light is recognized by defining it to be exactly 299,792,458 meters per second. This is also equivalent to 186,000 miles/second.
The speed of light is 299,792,458 meters per second, or 186,282 miles per second
The speed of light is 299,792,458 metres per second, which is approximately 300,000 kilometres per second. This is the maximum speed taken by all forms of energy, information and matter to travel in the universe. The terminology is usually taken to mean speed in vacuum and is denoted by 'C'.
The speed of light is 299, 338 kilometres a second or 1, 126, 540, 800 kilometres an hour. One can calculate the time taken by light to travel given that the distance from the planet Earth to the Moon is 384 633.216 kilometres. Nothing can travel as fast as the speed of light.
Light travels at a speed of 299,792,458 metres per second. This seems pretty fast and certainly theory says that nothing else can travel faster as compared to the speed of light. Sunlight takes approximately 8 minutes and 19 seconds to reach the Earth.
The speed of light is exactly 299 792 458 m/s. It is the maximum speed of all mass-less particles and the speed at which all matter, energy and information in the universe can travel.
Light speed refers to going as fast as the speed of light. The speed of light is the speed of light = 299,792,458 meters/second (approximately 186,000 miles/sec).
The speed of light is 186,000 miles per second and speed at which light travels in a vacuum
The speed of light is 299,792,458 meters per second. This is about 186,000 miles per second. For many years it was thought that light transmitted instantly, but in the 17th century it was discovered that light traveled at a finite speed and just appears to be interested.
Q&A Related to "What Is the Speed of Light"
 Speed of Light in vacuum is about 3*10^8 m/s. Light can travel through vacuum being electromagnetic wave. Speed decreases with density of medium. http://answers.ask.com/Science/Physics/what_is_the...
 1. Cover an entire dish with large marshmallows standing side by side. 2. Place the dish in a microwave, set the microwave on high for a few minutes, and watch. 3. Wait until the http://www.ehow.com/how_5157189_calculate-speed-li...
 The speed of light itself is constant in any medium. What makes the measurement of its propagation speed lower in some media is the fact that it gets absorbed by the medium and re-emited http://www.quora.com/What-is-the-speed-of-light-in...
 The speed of light can be measured in miles (as we do here in the US) as: 186,000 miles per second (which means light can circle the earth over seven times every second! or 5,865,696,000,000 http://wiki.answers.com/Q/What_is_the_formula_for_...
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