Inside, a larger aluminum PCB holds (16) 3.5 x 2.8 mm LED packages. Each LEDs drops around 8.5 V at 50 mA, so they contain 3 chips; like the GE Classic bulb ... light as a modern 4-watt incandescent.

We tested 8 of the best light bulbs to see which are idea for basic needs, smart use, color-changing capabilities, and more.

not dimmable, no built-in timer, and no light-spectrum adjustment The GE BR30 9-watt grow light is actually an LED light bulb that turns any conventional lamp or light fixture into a grow light.

In CFLs, electric current energizes argon and mercury vapor, which in turn causes a phosphor coating inside the bulb to emit light. New halogen bulbs look like the incandescent bulbs people are ...

How many geeks does it take to flash a lightbulb? Judging from the list of entries in the 2017 Flashing Light Prize, so far only seven. But we suspect Hackaday readers can add to that total.

while an incandescent light bulb would normally range from $2 to $3 a bulb, according to a report from Lifehacker. However, LED bulbs save money in the long run because they use less energy to run ...

For decades, globes and other glass covers for ceiling light ... of fixture is still available, as is another type of fixture ...

Hoarding light bulbs was my obsession a decade or ... So, I bought up every incandescent bulb I could find — in every wattage and for every purpose. There’s a shelving unit in my basement ...

There was more chemical knowhow employed in the development of the incandescent electric ... worked to produce an evacuated light bulb with a carbon-impregnated thread as the filament. The bulb lasted ...

When the lights go out, you're in the market for a bulb replacement. But if choosing between CFLs, halogen or LEDs leaves you in the dark, our guides will separate the fact from the hype for each type ...

The light bulb, a defining invention of the late 19th century, will soon be a thing of the past in the European Union. EU Energy Ministers decided in Luxembourg last week to ban incandescent light ...

A team of material scientists and engineers affiliated with a host of institutions in China took a new look at the incandescent light bulb and found a way to improve its efficiency. In their paper ...