If you’re testing old stereo equipment, a dim bulb tester can really come in handy. It’s not for testing bulbs, though, it’s a tester that uses a dim bulb to test other things. [Nicholas Morganti] ...

Soon they will be the only kind of light bulb allowed, but now officials in Brussels have admitted that energy-saving bulbs are not as bright as the old-fashioned kind they are replacing. From ...