0
What else can I help you with?
How long is the speed of light?
The speed of light isn't a distance so it has no length it is a measure of speed, which is roughly 186000 miles per second.
What is international standard of length?
The international standard of length is defined by the meter, which is the base unit of length in the International System of Units (SI). It is currently defined in terms of the speed of light in a vacuum, where the meter is the distance that light travels in a vacuum in 1/299,792,458 of a second.
How is the standard unit for length in the metric system defined?
The distance travelled by light in a vacuum, in 1⁄299,792,458 of a second.
What is a Millionth of a Second?
A millionth of a second is one microsecond. It is the length of time a beam of light, traveling about 3 x 108 meters per second, will take to go about 300 meters.
What is the SI base unit for length and how is it defined?
The SI base unit for length is the meter (m). It is defined as the distance traveled by light in a vacuum in 1/299,792,458 of a second.
How did they know how long a meter is?
the length of the path travelled by light in vacuum during a time interval of 1/299,792,458 of a second.
What is the relation between light year and metre?
A meter is defined as the length light travels in 1/299,792,458th of a second. This is because light travels at 299,792.458 kilometers per second.
Is the speed of light is a basic unit or a derived unit?
The speed of light, abbreviated as "c", is a fundamental constant. It is 299,792,458 meters per second, and the length of the meter is DEFINED AS being 1/299,792,458th of the distance that light travels in one second. So it is a "basic unit". We generally use 300,000 km/second or 186,000 miles per second as "close enough" approximations of the speed of light.
what is the speed of the light of the star per second?
The speed of light in vacuum is the same for everyone regardless of the source. The answer would be 299792458 meters per second. This is an exact result by the way, since the length of a meter is currently defined such that this holds.
What is proper length of rocket per second?
Length is not measured in "per second".
How fast is a light year in meters per second?
"Meters per second" is a proper and wonderful unit for speed, but there's no answer to that question, because a 'light-year' is not a speed. It's a distance, defined as the distance that light travels through vacuum in one year. Speed of light in vacuum . . . 299,792,458 meters per second Length of 1 light-year . . . . . 9.4605284 × 1015 meters
What terms was standard meters defined in on 1983?
Originally, a metre was defined as 1/10,000,000th of the distance from the Earth's equator to the North pole. Since 1983 it has been defined as:the length of the path travelled by light in a vacuum during a time interval of 1/299,792,458th of a second.
