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LED Light Therapy for Skin Care
LED Light Therapy for Skin Care Light-emitting diodes (LEDs) were found by NASA to stimulate plant growth in space. LED light in different wavelength colors is used to treat many skin-related issues, such as acne, wound healing and collagen stimulation. The Food and Drug Administration has approved ...
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how-to-build-an-led-light
How to Build an LED Light Building a simple LED light can be a great project for kids or adults just learning electronics. An LED light can be built using a simple circuit with an LED, a resistor and a battery. Once the LED light is soldered together, it can be placed in virtually any plastic case t...
