Hey Guest, Early bird pricing on the Summer Moot (29th July - 10th August) available until April 6th, we'd love you to come. PLEASE CLICK HERE to early bird price and get more information.
I have been trying to make a lens to light fire out of oil floating on water. I get lots of bright dots under the glass dish but nothing gets hot enough. Anyone else tried this with success?
One could reverse it and have blobs of water under oil.
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