Why does a magnifying glass start a fire?



  1. 0 Votes

    When pointed at the correct angle, the magnifying glass will focus a large amount of light (everything that is hitting the glass) into a small point. This point is extremely hot, since it’s taking all of that light energy that is normally spread out and concentrating it. This will be hot enough to cause certain, highly flammable materials (paper, dry leaves, etc.) to catch fire.

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