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LED lamp - Wikipedia

A LED lamp or LED light bulb is an electric light for use in light fixtures that produces light using light-emitting diode (LED). LED lamps have a lifespan up to 25 times longer than incandescent lamps, and are significantly more efficient than most fluorescent lamps, with some LED chips able to emit up to 303 lumens per watt (as claimed by Cree and some other LED manufacturers).


UV LED Exposure Box - Instructables.com

How to build an Ultra Violet Exposure box using LED's. Your last Veroboard project! A UV exposure box is an extremely useful piece of kit. It can be used to make proper PCB's.


LED Light Therapy - Heel spurs, plantar fasciitis, heel pain

Introduction This article is about red and near-infrared light therapy for healing recent injuries and a few other possible things like fibromyalgia pain, dementia, retinal injuries, and wrinkles.


Siliconfish: IR LED speed/red light license plate photo blocker

My town installed two red light cameras and a speed camera in a 1/2 mile stretch into my neighborhood. They lowered the speed limit too. The week they put up the speed camera I got three tickets for going 42mph and 43mph in a 30mph zone.


Amazon.com : Neewer CN-126 LED Video Light for Camera or ...

Neewer CN-126 LED Video Light The Neewer CN-126 helps to ensure perfect settings for your photography or video subject. With it's lightweight and durable construction, you can carry this light around with you wherever you go.

"How-to" Articles on Screen Printing Techniques

EL CHEAPO “GROW” LIGHT UNIT This type of exposure unit is based on plans that you’ll see in many “how-to” screen printing books. It is easy and inexpensive to make, but it is less than ideal for screen making due to the lower quality light source and the time it takes to burn a screen.


Buds Of Life - Best Led Grow Lights Reviews & Buying Guide 2018

Buying an LED grow light nowadays could be frustrating if you are a beginner because there are a ton of different LED lights() are available in the market!. That’s the reason why we have compiled reviews of carefully chosen best LED grow lights to assist you in selecting the perfect product according to your needs.


Light-emitting diode - Wikipedia

A light-emitting diode (LED) is a two-lead semiconductor light source.It is a p–n junction diode that emits light when activated. When a suitable current is applied to the leads, electrons are able to recombine with electron holes within the device, releasing energy in the form of photons.


LED UV exposure box part 1, the box – Electro Bob

I bought 25 LEDs and began to experiment. This way I was able to find a compromise between LED density (spacing), distance between LEDs and board and cost.


Best LED Grow Lights Reviews For 2018 by Experts in Growing

Looking for an LED Grow Light? Having the right grow lights in your set up can be one of the most crucial things you make sure of. Plants can grow just fine when you have