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#10 | |
Soaring
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![]() Quote:
I gave my father an old, pre-war "Detektorradio" (crystal radio?) as a christmas present two years ago. It's 70 years old, and still fully functional, and needs no electricty at all, no battery, no network, no solar panel, no nothing. He dreamed of owning such a thing since he was a small boy. Most people today could not believe it that it runs without consuming any energy at all, they could not imagien anythign running without battery or a AC adapter. ![]() Things are not being build like that anymore. If your item does not break down before reaching it's fifth birthday, you are already lucky. A longevity of eight years they already call "robust construction". Anything beyond ten years will be remembered as a miracle. ![]() For the younger ones who may have cellphones, PCs and MP3 players, but do not know what this kind of radio was: http://en.wikipedia.org/wiki/Crystal_radio It needed no separate energy ressources, since it took it's energy directly from the transmission wave of the broadcaster.
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