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The speed of light is 300000 kilometers per second. A year's journey of light is called light year. How many thousands of miles is a light year?
One light year is about 189216 × 109000 Li
The calculation process is as follows:
S = 3 × 10 ^ 8 m / s × 3600 s / h × 24 h / D × 365 D / A
=9.4608 × 10 ^ 15m = 9.4608 × 10 ^ 12km = 1.89216 × 10 ^ 13li = 1.89216 × 10 ^ 9000li
Supplementary knowledge:
The propagation speed of light in vacuum is 3 × 10 ^ 8 m / s. The speed of light in other media is smaller than that in vacuum. The speed of light in air can be approximately considered as 3 × 10 ^ 8 m / s
A light year is a unit of distance (length), which is equal to the distance that light travels in a year;
The distance between Altair and Vega is 16 light years;
The speed of light in vacuum is 300000 kilometers per second. "Light year" is a unit of measuring the distance between celestial bodies, which refers to the speed of light in a year
300000 km / s × 360 days × 24 hours / day × 3600 seconds / h = 9.461 × 10 ^ 12 km
The speed of light in vacuum is 300000 kilometers per second. "Light year" is a unit to measure the distance of celestial bodies. How many kilometers is it in a year calculated by a calculator?
What's the formula
A light year is 9460 billion kilometers, more formally defined as: in a Julian year (that is 365.25 days, and every day is equal to 86400 seconds, a year is 31557600 seconds), in free space and infinitely far away from any gravitational field or magnetic field, the distance a photon travels. Because the speed of light in vacuum is 299792 per second
The distance that light passes through in a year is called light year. Please calculate how many kilometers is a light year? Vega is about 2.6 × 10 kilometers away from the earth to the 14th power. How many years will Vega's emission reach our earth? {fast}
In terms of 1 year = 365 days, 5 hours, 48 minutes, 45.9747 seconds, 1 Light Second = 299792458 meters, 1 light year = 9460528404879358.8126 meters
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