The Kyoto Box, a solar cooker which retails for €15 (about $20 USD) can boil 10 liters (2.64 gallons) of water in 2 hours. So apart from its primary uses – cooking and water purification – it can probably be pressed into service to sterilize medical instruments. The manufacturer, Kyoto-Energy, has offices in Indonesia, South [...]
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Sierra Trading Post has solar-powered LED flashlights on sale for $7.96.I believe this is identical to a flashlight I’ve been testing and using and it’s pretty impressive – if kept on a windowsill – or exposed to artificial interior light – all day, it runs for at least a couple of hours. And it’s got [...]
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The same messages can be communicated by signalling the letter "K" in Morse code via signal lamp. (While a proper signal lamp may be ideal, a flashlight, probably best employing red LEDs, will certainly fit the bill).
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