Of course you could get a red, green and blue LED and combine them together to make a white light, but that's not how most of them work. Instead, a white LED is either a violet or ultraviolet LED ...

While saber-tooth tigers are no longer a threat, there’s also no need to sit in the gloom during a summertime power outage or in the wake of a disaster. There’s also no need to burn up your phone ...

Turn on the flashlight to check that there are no leaks of white light, and make sure the red filter is still thin enough to allow sufficient lighting. If there are any leaks, tape them up nice ...

Instead, make this DIY light that can be powered by your phone line ... Make a DIY Phone-Line Powered Flashlight for Your Next Power Outage. Adam Dachis. June 13, 2011 ...