Starwatch: The summer triangle


We have known the giant “V” of bright stars high in our S sky on August nights as the Summer Triangle since Sir Patrick Moore popularized the name during his early Sky at Night TV…

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Device captures ambient electromagnetic energy to drive small electronic devices


Related images(click to enlarge) Researchers have discovered a way to capture and harness energy transmitted by such sources as radio and television transmitters, cell phone networks and satellite communications systems. By scavenging this ambient energy…

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