Q: How do lenses that concentrate light not violate the second law of thermodynamics? If you use a magnifying glass to burn ants, aren't you making a point hotter than the ambient
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Light - Lenses. - Simple Science
Solar Science: Can you start a fire with a magnifying glass? – Go Science Kids
Can you start a fire with glasses the same way you would use a magnifying glass with the sun? - Quora
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How to Start a Fire with a Magnifying Glass - YouTube
