2007-03-31 07:43:58 · 5 answers · asked by Anonymous in Science & Mathematics ➔ Physics
Depends entirely on the lens. It'll take only a few seconds to learn what the appropriate distance is by trying.
2007-03-31 07:47:34 · answer #1 · answered by kearneyconsulting 6 · 0⤊ 0⤋
This depends on two things. The size of the magnifying glass, and the curve of the magnifying glass. The bigger the glass the further you should be. The most important part is to focus all the light into one point. try moving it up and down till the light is all hitting at one point. Also try to angle the glass so that it perpendicular with the suns rays.
2007-03-31 14:48:08 · answer #2 · answered by j0nnyg 2 · 0⤊ 0⤋
Seventh grade science question: every lens has it's own focal point, when you find the focal point of a lense you are finding the point where the sun's energy is getting used most, so when you find that you will see a little dot on the object you are trying to burn.
2007-03-31 14:49:26 · answer #3 · answered by Anonymous · 0⤊ 0⤋
4-5 inches
2007-03-31 14:47:12 · answer #4 · answered by Ands 7 · 0⤊ 0⤋
The distance is the "focal length".
2007-03-31 14:56:43 · answer #5 · answered by ecolink 7 · 0⤊ 0⤋