3 ms·
True, or by leaving it in the sun. Combining ideas may make sense here. A flashlight with PCM and a black handle that you can leave in the sun, and optionally
by schiffern 13y ago
True, or by leaving it in the sun.
Combining ideas may make sense here. A flashlight with PCM and a black handle that you can leave in the sun, and optionally wrap in a soaked cloth. Perhaps PV makes more sense, but I haven't run the math.
Of course, you'd also want a thermos to carry it in. ;)