2.7K views · 13 reactions | How do motion sensor lights work? Those outdoor lamps that switch on when you walk by use passive infrared sensors. They detect tiny changes in infrared radiation when a warm body moves across their field of view. The sensor triggers a circuit that powers the light instantly. Engineers design them to ignore small fluctuations like wind or rain, so they only react to significant movement. A simple, brilliant mix of electronics and safety. | Electricalgram | Facebook
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9.4K views · 111 reactions | We finally know why insects are attracted to lights. Researchers used high-speed cameras and motion capture to reveal that lights trigger what is known as the dorsal light response, a reflex that helps animals work out which way is up and keep their bodies upright. Learn more: https://www.newscientist.com/article/2369508-we-finally-know-why-insects-are-attracted-to-lights/ | New Scientist | Facebook
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9.4K views · 111 reactions | We finally know why insects are attrac…
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