I am checking i'm correct in thinking that I learnt it was 300000000 meters per sec.Thanks.
2006-07-31 09:39:03 · 16 answers · asked by Anonymous in Science & Mathematics ➔ Astronomy & Space
The "actual" speed of light is 186,300 mph...so if the speed of light was squared, it would travel at 372,600 mph...so your equation is nearly correct. The only reason I know this at all is because I live at the Lowell Observatory and study the Universe and our own Milky Way Galaxy through the worlds greatest land-based telescopes...along with a link to the now "up-and-running" Hubble Telescope. "Light", and the relation of light and light spectrum concerning the heat and elements which are in any given star(s) under study, is the chief study of the heavens. Light is "everything" in the study of the Galaxies and the Universe.
2006-07-31 09:53:28 · answer #1 · answered by LARRY M 3 · 3⤊ 8⤋
The speed of light in a vacuum is an important physical constant denoted by the letter c for constant or the Latin celeritas meaning "swiftness". Light travels slower than c through all other transparent mediums; the ratio of c to this slower speed is called the refractive index of the medium.
In metric units, c is exactly 299,792,458 metres per second. Note that this speed is a definition, not a measurement, since the fundamental SI unit of length, the metre, has been defined since October 21, 1983 in terms of the speed of light—one metre is the distance light travels in a vacuum in 1/299,792,458 of a second. Converted to imperial units, the speed of light is approximately 186,282.397 miles per second, or 670,616,629.384 miles per hour.
2006-07-31 09:43:08 · answer #2 · answered by Steve C 4 · 0⤊ 0⤋
Yes its about 300,000 kilometers per second, which of course is 300,000,000 metres per second.
If you square it, it is an enormous figure - which is why there is so much energy to be produced from a relatively small mass with atomic power, and why nuclear bombs are so destructive, and why the sun and the stars can shine for billions of years.
2006-07-31 09:45:07 · answer #3 · answered by nick s 6 · 0⤊ 0⤋
The speed of light (in a vacuum) is 299792458 metres per second. Therefore light could go around the earth 7.5 times in a second.
2006-07-31 09:48:11 · answer #4 · answered by Gillz 1 · 0⤊ 0⤋
The speed of light is 299,792,458 metres per second. Or approximately 300 million metres per second, or 186 thousand miles per second
2006-07-31 09:43:09 · answer #5 · answered by Paul B 5 · 0⤊ 0⤋
As I remember it C= speed not speed of light.
2006-07-31 09:43:39 · answer #6 · answered by Katie 3 · 0⤊ 1⤋
186000 miles per second
2006-07-31 09:44:51 · answer #7 · answered by Boris 5 · 0⤊ 0⤋
186000 miles per second
2006-07-31 09:43:06 · answer #8 · answered by jb 3 · 0⤊ 0⤋
Well its 186000 miles a second (in a vacuum)...
2006-07-31 09:43:42 · answer #9 · answered by btmduk 3 · 0⤊ 0⤋
2.9979 x 10^8 m/s
2006-07-31 09:41:57 · answer #10 · answered by Brian L 7 · 0⤊ 0⤋