I’ve been reading Edward Teller’s autobiography.
In a footnote (p. 247), Teller mentions that “the electron in a hydrogen atom will eventually jump to a proton if it is close enough”.
Teller and Francis Owen Rice calculated how long it would take, if the proton is 1 centimeter away.
Their answer was 10100,000,000.
A long time. A “big number”.
That’s the same as 10108, which is more than a googol (10100), but much less than a googolplex (1010100).
What’s that? You want to know what units?
You mean is the 10100,000,000 in Planck times (5.4 x 10-44 seconds), or seconds, or years, or time periods since the Big Bang?
Doesn’t matter. (Think about it.)
That’s how big a number it is.