2007-02-07 13:45:05 · 3 answers · asked by Anonymous in Science & Mathematics ➔ Physics
by definition, the speed of light is 299,792,458 m/s (the length of the meter is defined as the distance that light travels in 1/299,792,458 of second), or around 186,282.4 miles per second.
This is in a vacuum: whenever light travels through matter, it goes slower.
2007-02-07 13:49:06 · answer #1 · answered by kz 4 · 1⤊ 0⤋
In metric units, the speed of light "c" is exactly 299,792,458 metres per second, approximately 186,282.397 miles per second.
Just out of curiosity, How did you get all the way to Yahoo Answers Level 3 without being able to look-up that kind of information yourself?
Or is this a trick question? Intended to see how many people would answer, how accurate, and how fast?
It seems simple to look up, so, what's up with that?
2007-02-07 14:06:06 · answer #2 · answered by V. 3 · 0⤊ 1⤋
Roughly 186,000 miles per second. Really fast.
2007-02-07 13:48:36 · answer #3 · answered by ttpawpaw 7 · 1⤊ 0⤋