Naked Science Forum
Non Life Sciences => Physics, Astronomy & Cosmology => Topic started by: thedoc on 04/12/2016 08:23:01
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denken asked the Naked Scientists:
What magnifying glass of what power must we use to burn a metal in a distance of 9cm?
What do you think?
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If you use a metal with a low melting point then a regular magnifying glass would suffice ...
https://www.youtube.com/watch?v=WS1gOYGS41M[url] (https://www.youtube.com/watch?v=WS1gOYGS41M)