what was the speed of light given to people that went to school in the 60s? my dad thinks it's 33000 but that has changed a lot since then.
2007-10-17 10:27:34 · 10 answers · asked by Sound of Madness 4 in Science & Mathematics ➔ Astronomy & Space
The speed of light hasn't changed. It is still 186,000 miles/sec or 300,000 km/sec.
Probably, your dad had mixed it up with the speed of sound which is 330 meters/sec, but appended extra zeros on it.
2007-10-17 12:18:51 · answer #1 · answered by Botsakis G 5 · 1⤊ 0⤋
If speed of light is relative then it is possible to go with a speed faster than the speed of light. Speed of light is not relative; it is absolute; it is constant; it is measured the same whatever the speed of the observer is. This is the reason that time and distances are relative. Speed of light is determined by "Distance / the time to cross that distance." When materials move with the speed of light their distance in the direction of motion becomes zero and time becomes zero. Now how it will measure the speed of light as some constant. 0/0 is not defined. Therfore materials cannot move with a speed equal or greater than the speed of light.
2016-05-23 05:02:27 · answer #2 · answered by ? 3 · 0⤊ 0⤋
The speed of light hasn't changed. Light travels the same speed now as it did back in the days of the dinosaurs
c = 3 x 10^8 m/s
2007-10-17 10:33:09 · answer #3 · answered by Anonymous · 4⤊ 0⤋
the speed of light as we know it has not changed. The technology in the 1960's was good enough to accurately measure the speed of light.
In metric units, the speed of light is exactly 299,792,458 metres per second (1,079,252,848.8 km/h). The fundamental SI unit of length, the metre, has been defined since October 21, 1983, as the distance light travels in a vacuum in 1/299,792,458 of a second; any increase in the precision of the measurement of the speed of light would refine the definition of the metre, but not alter the numerical value of c. The approximate value of 3×108 m/s is commonly used in rough estimates. In imperial units, the speed of light is about 670,616,629.2 miles per hour.
2007-10-17 10:33:29 · answer #4 · answered by callofktulu 1 · 4⤊ 0⤋
I remember being taught that the speed of light was 186,400 mph per second when I was in school in the 60's time period.
However, now it is taught that the speed of light is 186,292 mph per second.
In addition, several authorities are on record saying that the speed of light is not constant, contradicting Einstein, and that it is slowing down. They have now taken measurements over several time periods to show this phenomenon.
Some researchers claim that the speed of light was much faster in the formation of the planet Earth. It has been slowing down ever since.
2014-02-20 03:27:26 · answer #5 · answered by spick5a 1 · 0⤊ 0⤋
at that time, the speed of light (186,282 miles per second) was not accurately measured until 1972, so i would say it was a round 186,000 miles per second, or 300,000 kilometers per second.
see:
http://micro.magnet.fsu.edu/primer/lightandcolor/speedoflighthome.html
2007-10-17 10:33:53 · answer #6 · answered by Anonymous · 1⤊ 0⤋
What I learned was that it was 186,280 miles per sec.
Today it is closer to 186,282.4 miles per sec.
2007-10-17 13:22:44 · answer #7 · answered by Tinman12 6 · 1⤊ 0⤋
186,000 miles per second or 300,000 kilometers per second, same as now.
2007-10-17 10:31:06 · answer #8 · answered by Flyboy 6 · 5⤊ 0⤋
I remember 186,200 MPS.
2007-10-17 11:49:41 · answer #9 · answered by Irv S 7 · 0⤊ 1⤋
I remember 186,400 mph.
2007-10-17 10:36:10 · answer #10 · answered by Raymond 7 · 0⤊ 2⤋