how fast is the speed of light???
2007-07-19 17:09:33 · 10 answers · asked by Anonymous in Science & Mathematics ➔ Physics
Speed of light in a vacuum = 299,792,458 meters / second (= ~186,000 miles / sec).
2007-07-19 17:14:23 · answer #1 · answered by dansinger61 6 · 0⤊ 0⤋
In a vacuum, the speed of light is the fastest and light slows down in other media.. Its slower going thru glass or water. Thats why we say the speed of light "in a vacuum". c is the speed of light in a vacuum. And others have here correctly answered for its numeric value.
2007-07-20 00:20:15 · answer #2 · answered by Anonymous · 0⤊ 0⤋
In vacuum space, the speed of light is 186,282 miles per second to be exact. Or 670.6 million miles per hour.
2007-07-20 00:17:15 · answer #3 · answered by caltam84 3 · 2⤊ 0⤋
Ever tried Wikipedia?
2007-07-20 00:18:26 · answer #4 · answered by Fast Eddie 2 · 0⤊ 1⤋
not as fast as superman
http://en.wikipedia.org/wiki/Speed_of_light
2007-07-20 00:14:25 · answer #5 · answered by 987654321abc 5 · 0⤊ 0⤋
186,000 miles/second
300,000 kilometers/second
2007-07-20 00:16:07 · answer #6 · answered by eric l 6 · 0⤊ 0⤋
186, 000 MPH (give or take a mile or two...).
2007-07-20 00:17:42 · answer #7 · answered by Joseph, II 7 · 0⤊ 0⤋
299,792,458 meters / second
2007-07-20 00:14:07 · answer #8 · answered by James 5 · 0⤊ 0⤋
Hi. 'c'.
2007-07-20 00:20:19 · answer #9 · answered by Cirric 7 · 0⤊ 2⤋
300000000 m/s
2007-07-20 00:17:20 · answer #10 · answered by athleticsfan12 4 · 0⤊ 1⤋