Solar cooking using my fresnel lens solar cooker made using a 2'x4' fresnel lens from a rear projection TV. I show it cook minced pork, burn a leaf within seconds and how to find the focal length.
See also my video "Fresnel lens and mirror solar cooker cast iron pan" to see how I use a mirror with this fresnel lens to put the bright light on the bottom of the pan so it's not in your eyes:
And to learn all about fresnel lenses watch "Fresnel lens - what is it, testing focal lengh, solar heat generated":
For more, see:
My cone solar cooker:
and sun finder:
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