[extropy-chat] rfid

[spike]

> bounces at lists.extropy.org] On Behalf Of Eliezer S. Yudkowsky
> Subject: Re: [extropy-chat] rfid
> 
> 
> There are not remotely near 10^95 grains of sand on the planet.  There
> are not even 2^96 grains of sand on the planet.  This entire planet,
> iron core and all, weighs only 10^27 grams.  There are not remotely near
> 10^95 atoms in the Solar System.   Eliezer S. Yudkowsky     



The sun is about 2E30 kg and there are a few hundred billion
stars in the galaxy and few hundred billion galaxies in the
known universe, so 2E52 to 1e53 kg and the universe is mostly
hydrogen and 6e23 hydrogen atoms is about a gram so the
visible universe is about 1e79 atoms, then you give
an order of magnitude or so for dark matter,
whatever that is and you get perhaps 1e80 atoms.  Still
short of Mike's number by a factor of a quadrillion.

spike