Interference from low energy light bulbs, which now comes under the broad heading of Electromagnetic Compatibility or EMC, has been a problem since the first compact fluorescent bulbs (CFLs) went on ...

Yes, it's possible to change any of those LEDs, but that doesn't mean they'll be standard or even easy to replace. Some of them may be surface mounted. Is it worth possibly damaging your CD-ROM, etc.

There's a handy trick for reading station signs that otherwise fly past in a blur as you travel in a high-speed train. Look at one side of the window and then immediately at the other side of the ...