How long does it take for heat to reach us from the sun?

22 February 2009

Question

How long does it take for heat to reach us from the sun? It’s about 8 minutes, the distance between the sun and the Earth because light travels at about 1 billion km/h and the sun is about 150 million km away from the Earth.

Answer

Chris - The answer is that heat arrives in the form of light because it's in the form of infra-red radiation, largely, that's reaching us from the sun. It's reaching us in the form of radiation so that too takes 8 minutes to get here.

Comments

I think it is 8 minutes as that's what is written in other websites as well

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