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This is a 4-inch parabolic mirror it doesn’t magnify light. It concentrates it. Under the mid-day sun, it gathers about 8 watts of solar power into a single, razor-sharp focal point around 5 to 6 watts of pure thermal energy, hot enough to ignite wood or paper in seconds. Compare that to a 4x4-inch solar panel it converts that same sunlight into about 1.5 to 2 watts of electricity. Both use the same sunlight… but one spreads it evenly, while the other focuses it precisely. That’s the secret of t

Trash can lid to Parabolic Mirror DIY telescope mirror Signal booster Faster 3G/4G