That's a joke question - areas are measured in units of area, not distance... Chris.

I suppose this aught to be in Friday Joke, but more relevant to the thread.So, a maths questionIf a lamp has 3 serial connected Cree XP-Ls are seriously over driven at 5 amps, from a seriously overrated DC-DC converter pushing out this current from a 12V input, assuming a lamp surface area of 11.5 cm and composed of an aluminium alloy having a thermal conductivity of 220 watts per Kelvin MetreHow long would it take to fry an average egg before the whole lot went up in flames?

That is totally brilliant Sir But have you taken into account the decreasing Vf of the LEDs as the temperature increases?

How long would it take to fry an average egg before the whole lot went up in flames?

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