結果 : why are led lights brighter
2:55

LED電球にアルミホイルを貼ると明るさが100%アップ

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Question Everything: Why are car headlights so bright?

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Bright White Screen Light 1 hour HD

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What really makes an LED bulb better or brighter than another? The LED chip tolerance box!

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Difference Between Lumens and Watts? - THE BRIGHTNESS OF LIGHTS

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LED BRIGHTNESS - WATTS vs LUMENS | Light Bulb Moments with Eleanor Bell

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Why Solar Outdoor Lights Are a Game Changer!

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REDUCE LED BRIGHTNESS WITHOUT A DIMMER!!

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10 Hours of Bright Pink Screen in 4K!

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Color Changing Led Lights | Relaxing Mood Live 24/7

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Use resistor to dim down LEDs - less bright

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