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I'm pretty sure if I were to go pick up a number of magnifying glasses and focus them on the same point using moonlight, the temperature at that point would inc
by newnewpdro 8y ago
I'm pretty sure if I were to go pick up a number of magnifying glasses and focus them on the same point using moonlight, the temperature at that point would increase with every additional magnifying glass.
Am I to accept that the additional magnifying glasses would cease increasing the temperature once the temperature matched that of the moon's surface?
- umanwizard 8y agoI don't know enough about physics to judge whether Randall's argument is correct, but in general it is possible for a sequence to be strictly increasing yet bounded. For example, 1/2, 3/4, 7/8, 15/16, ...
- jarfil 8y agoYou can't focus light from a single source with just magnifying glasses at different positions onto the same point. You can try it with the sun, get two magnifying glasses and try to focus them on the same point at once, it's not possible. With the addition of some well placed mirrors though, that's possible.