Speed of Light Explained

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Uploaded by on Dec 4, 2009

Variable Speed of Light

An observer outside gravitational fields measures the speed of light locally (in his location) at 299792.458 km/s but when he looks towards a black hole he sees the speed of light there to be as slow as a few meters/s. At the same time an observer freefalling into that black hole measures the speed of light locally (in his location) at 299792.458 km/s; when he looks towards the black hole he sees the speed of light there much slower; when he looks away from the black hole he sees the speed of light there much faster. When he looks towards outside gravitational fields he sees the speed of light there a zillion km/s. In 1915 (10 years after Special Relativity) Einstein developed another theory called General Relativity that deals with gravitational fields and according to this latest theory the speed of light appears to vary with the intensity of the gravitational field. Learn More...
Effective Speed of Light

Scientists just confirmed the existence of "Dark Energy", a mysterious repulsive force that acts in opposite to gravity. Scientists today do not know what this "Dark Energy" is but they know that it is causing the entire universe to expand at an increasing rate. This Dark Energy is even causing distant galaxies to recede from us faster than our local speed of light. The expansion of the universe is causing light en route to be dragged away from us. This makes observers to see distant inbound light at effective speeds less than 299792.458 km/s and to see distant outbound light at effective speeds greater than 299792.458 km/s. However every non-accelerating observer measures the speed of light locally (in his location) at 299792.458 km/s in any direction. Learn More...
Speed of Light = 12000 Lunar Orbits/Earth Day

But 1400 years ago it was stated in the Quran (Koran, the book of Islam) that angels travel in one day the same distance that the moon travels in 1000 lunar years, that is, 12000 Lunar Orbits / Earth Day. Outside the gravitational field of the sun 12000 Lunar Orbits / Earth Day turned out to be the local speed of light!!! This definition is independent of direction and common to all observers: An observer near a black hole, for example, sees the speed of light outside gravitational fields a zillion km/s but still equal to 12000 Lunar Orbits / Earth Day!!!

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All Comments (4)

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  • @critchley3819 I don't understand how you can deny the fact that there is no god. I mean look, who else than god could have made this speed of light? who else than god could have made the galaxy. forget the galaxy THE WHOLE UNIVERSE. my goodness you should be ashamed of yourself, how can you even dare to say those words. think before you speak

  • My friend. stop worrying and thinking. It will send you bonko. Enjoy the sights and sounds that is now There is no god only good.

  • The Moon's Distance from Earth

    Shortest 225,740 miles 363,300 km

    Greatest 251,970 miles 405,500 km

    Average 238,897 miles 384,467 km

    the speed of light = 299 792 458 m / s

    405,500,000m (1200 lunar orbits at maximum distance) divided by 86,400 seconds (one earth day) = 4,693.28704m/s

  • nice math, but in context to what? what is the relevance?

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