Thursday, May 20, 2010

1 mole of stars. Avagadro, state and human perception of scale

so reading
The Eerie Silence by Paul Davies,
he points out that there are estimated to be around 10^23 starts in the universe around now....this is an interesting number (like all numbers) which is around Avagadro's number which is the number of atoms in 12 grams of carbon 12
or roughly 24 liters of air at STP.

one amusing number to play with is the number of molecules in a glass of water, which is MUCH more than the number of glasses of water in all the oceans of the Earth.

So the number of stars is in between.

maybe, they are the same thing.

No comments: