SATS How To...
Welcome to the all new SATS How-to page. Here we will teach you valuble techniques that can be applied in your Maths, English & Science SATS exams, whatever the level. Forgotten how to convert a fraction? Unsure about how to plan an essay? Then the SATS How-to is for you!
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| how to understand light |
Speed of Light
The speed of light is 299,792,458 metres per second. Or approximately 300 million metres per second, or 186 thousand miles per second, or 1 foot per nanosecond. The speed of light, sometimes known as "C" (as in E=MC2), is a constant of the Universe. However you measure it, it really is 299,792,458 metres per second precisely, or about 186,282.4 miles per second.
Sometimes the speed of light is approximated as 300 million and is written as 3 x 108. To find out about this way of writing big numbers, see exponential notation
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