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   sci.electronics.design      Electronic circuit design      143,102 messages   

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   Message 141,923 of 143,102   
   Arie de Muijnck to john larkin   
   Re: fresnel lenses   
   01 Jan 26 16:37:50   
   
   From: noreply@ademu.nl   
      
   On 2026-01-01 01:53, john larkin wrote:   
   > https://www.amazon.com/dp/B0FS7TQ4CV?ref=ppx_yo2ov_dt_b_fed_asin_title   
   >   
   > One can carry one of these in a wallet and have a decent magnifier   
   > handy.   
   >   
   > They claim it can start fires too. I'll test that if the sun ever   
   > comes out again.   
   >   
   > Maybe two can be stacked for double the magnification.   
   >   
   >   
   > John Larkin   
   > Highland Tech Glen Canyon Design Center   
   > Lunatic Fringe Electronics   
      
   They work fine. SWMBO forgot her lighter and wanted to smoke.   
   I have such a lens in my purse and lighted the cigarette.   
      
   Arie.   
      
   --- SoupGate-DOS v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)   

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