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Re: [Phys-L] just for fun


On 2013, Dec 18, , at 12:18, Christopher M Gould <gould@usc.edu> wrote:


Just for fun. Assuming that there is a one-to-one correspondence between switches and lights, assuming that all lights work, and assuming that you know which way is "on" for all three switches, then one solution is to turn two lights on for a few minutes, then turn one off, and quickly run downstairs to see which light is dark but warm.


Very smart! and added assumption not LEDs --long time to heat up the LED P/S.