26 June 2014

Realms of gold

Roughly one hundred thousand trillion* solar photons arrive every second on every square centimeter of the Earth in sunlight.

* that is, one hundred quintillion, or 10^17 (via Caleb Scharf). The number of solar photons striking the planet every second is estimated be on the order of 10^45 (via Ethan Siegel)

Image: Twisted Oak on Broom Hill in the New Forest by Jim Champion

1 comment:

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