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Can you tell me how bright is the sun?
Answer 1:

We usually measure brightness in Watts. 1 watt is one Joule per one second.

So for example, at your home you can look at the light bulb in one of the lamps and it may be for example 100 watts or 100 W.

On this same scale, the brightness of the Sun is 1,00,000,000,000,000,000,000,000,000 Watts.

So, if you can go to the store and buy 1,000,000,000,000,000,000,000,000 light bulbs of the kind you have at home ( 100 w bulbs) and you turn each one on, then your lamp will be as bright as the Sun.



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