Concentration

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Concentrated Sunlight
Water Droplets Concentrating Sunlight

Why doesn't the leaf burn? The water droplet is focusing the sunlight to a tiny point on a dry leaf. I'm not sure why it doesn't begin to burn. I can certainly understand why it doesn't cause a fire - the leaf should burn a tiny hole, then the water drop falls toward the hole and extinguishes the fire.

Not sure.......

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