"scott" <sco### [at] scottcom> wrote:
> With some quick calculations and rather dubious assumptions I estimate that
> from a star like Betelgeuse approximately 10^6 photons are going into your
> eye per second.  This is about the same as a 100 W light bulb 10 km away.

Interesting. Perhaps bizarrely, I know exactly what Betelgeuse looks like to the
naked eye, but not a lightbulb 10km distant!

What are your dubious assumptions? This is just the sort of 'sensible
guesstimation' calculation I used to enjoy at university. :)

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