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Stirling Engine Fresnel Lens Solar Power Green Energy Sun E-mail
When placed in the sun, a fresnel lens will act as a giant magnifying glass and concentrate light to a very small point. Most large fresnel lenses will concentrate several square feet of sunlight to less than an inch resulting in a hot spot over 2000 degrees Fahrenheit. This will cause wood to instantly catch on fire or zinc and copper metal to melt in a few seconds or even burn and vaporize. We have boiled 12 oz. of water in a dark glass bottle in 90 seconds and burned a hole in a stainless steel bowl.. One gallon of water was boiled in 30 minutes.



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Stirling Engine Fresnel Lens Solar Power Green Energy Sun
Tuesday, 01 December 2009
When placed in the sun, a fresnel lens will act as a giant magnifying glass and concentrate light to a very small point. Most large fresnel lenses...


 

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