[HN Gopher] Coherer Effect [video]
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       Coherer Effect [video]
        
       Author : modinfo
       Score  : 14 points
       Date   : 2023-09-03 17:17 UTC (5 hours ago)
        
 (HTM) web link (www.youtube.com)
 (TXT) w3m dump (www.youtube.com)
        
       | thunderbong wrote:
       | This was amazing! Never knew of this. And Mehdi is great as
       | always!
       | 
       | And this is certainly one of the few things on his channel that I
       | can try at home!
       | 
       | The wikipedia article -
       | 
       | https://en.m.wikipedia.org/wiki/Coherer
        
       | extraduder_ire wrote:
       | I've had cheap battery operated devices that react in the same
       | way when a lighter clicks near them. Except they stay turned on
       | because the first thing they do is latch their power on.
        
       | smegsicle wrote:
       | tl;dr
       | 
       | strange device produces light in response to lighter
       | 
       | and the light ceases after you blow on it
        
       | djmips wrote:
       | also nicely covered in the Secret Life of Radio in context of the
       | development of radio communication.
       | 
       | https://youtu.be/LMxate9gegg?si=Z5pANQTsQGIosIcU
        
       | RicoElectrico wrote:
       | This is amazing, but what blows my mind even more is Bose's
       | experiments with mmWave in the order of 60 GHz (!)
       | 
       | https://www.cv.nrao.edu/~demerson/bose/emerson_delhi.pdf
        
       | seiferteric wrote:
       | I built one of these when I was a kid with a piece of plastic
       | tube, filled with filings from an iron pipe and two metal pushed
       | into either side. I tested by clicking the electric started on
       | the stove and flicking to reset, I was amazed when it actually
       | worked.
        
       | pxue wrote:
       | Mehdi been explaining EE concepts since I was in school a decade
       | ago. What a legend.
        
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       (page generated 2023-09-03 23:00 UTC)