Naked Science Forum

Non Life Sciences => Physics, Astronomy & Cosmology => Topic started by: thedoc on 04/12/2016 08:23:01

Title: How powerful a lens would a magnifying glass need to have to burn metal 9cm away?
Post by: thedoc on 04/12/2016 08:23:01

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?

Title: Re: How powerful a lens would a magnifying glass need to have to burn metal 9cm away?
Post by: RD on 04/12/2016 10:10:32

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)