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Being checked in its packaging. London winter temperature differentials may not be low enough to allow this to generate even 100mW!
Download small medium full - FREE to download and use! (c) Damon Hart-Davis
(Energy Matters): Seebeck effect thermoelectric generator TEG with DC converter and dummy LED load to extract energy from ground in winter 5 DHD.jpg
D=2014-07-29 [Jul 29, 2014]; S=5MB, 4000x3000; T=JPEG image [MIME:image/jpeg].
Key: D= file date of exhibit; S= size in bytes, XxY pixels, etc; T= type of exhibit; L= location/time or viewpoint of exhibit (if known).
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