Very short version of the comments: They claim that they can harvest ~30µW, this is very little. For example, it can only blink a led a few times per minute, because a normal led use 30mW=30000µW. Read the complete comments for more details.
"At his Colorado Springs laboratory during 1899–1900, by using voltages of the order of 10 megavolts generated by an enormous coil, he was able to light three incandescent lamps at a distance of about one hundred feet."
This article here https://news.ycombinator.com/item?id=8542091 is why some of the technology puffery in this WSJ article may not come true: there's been some pretty damning and serious scientific feedback om their sound-energy transmission efforts.
8 comments
[ 380 ms ] story [ 706 ms ] thread* https://news.ycombinator.com/item?id=10308708 (7 points, 8 days ago, 6 comments )
* https://news.ycombinator.com/item?id=10323565 (2 points, 5 days ago, 7 comments) (more interesting comments)
Very short version of the comments: They claim that they can harvest ~30µW, this is very little. For example, it can only blink a led a few times per minute, because a normal led use 30mW=30000µW. Read the complete comments for more details.
"At his Colorado Springs laboratory during 1899–1900, by using voltages of the order of 10 megavolts generated by an enormous coil, he was able to light three incandescent lamps at a distance of about one hundred feet."
https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&c...