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Today i read a news about light bulb:The largest light bulb in the world can be found atop the Thomas Edison Memorial Tower in Edison, USA. Built in 1937, the light bulb weighs a staggering eight tons. The tower is situated in the spot where Thomas Edison developed his brand of the light bulb...

I am working on an art project and would like to light up the inside of a shadow box picture frame to produce a glow behind the art. Can you tell me if this possible and if it would be safe in an enclosed frame (appx 8X10 or larger). I will alter the box to allow for the wiring for the on/off...

my friend has a problem about led lamp: he is a background in working with simple circuits i find from the net and modify a bit for his needs. he wants to build a nightlamp with leds. The effect he wants to achieve is that when turned on, 30 leds are on. Every minute, one led turns off until...

:)i need to find out which light we can find are the brightest white 5mm - 10mm volt led's. i am just been made aware of 1w-3w led's. i am interested to find out how bright the later can be and i don't mind how narrow the viewing angle is!