Every second, the sun converts about 600 million tons of hydrogen into 596 million tons of helium. The remaining 4 million tons of mass is converted to an amount of energy equal to 4 million tons times the speed of light squared.
Speed of light, speed at which light waves propagate through exclusive substances. in particular, the value for the speed of light in a vacuum is now described as precisely 299,792,458 metres per second. the velocity of light is considered a fundamental regular of nature.
Today the speed of light, or c because it's generally acknowledged, is taken into consideration the cornerstone of special relativity – unlike space and time, the speed of mild is regular, unbiased of the observer.
The velocity of mild in vacuum is 3×108 m/s. sunlight takes about eight minutes to attain the Earth. specific distance of the sun from Earth in popular form.
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