How does the button on the pedestrian crossing lights work? Does it actually send some sort of signal to the traffic lights, or is it just a psychological thing? It seems rather random timing-wise.
posted by divabat on May 14, 2008 - 21 answers

Our bedroom fan with light bulbs makes a quick snapping or popping noise when it's off. Normal? Bad? [more inside]
posted by LadyBonita on Oct 26, 2006 - 14 answers

I have a number of X10 switches controlling lights throughout my apartment. I have a number of problems with them... [more inside]
posted by Caviar on Feb 22, 2005 - 9 answers

How many strands of Christmas tree lights (100 lights/strand) can I safely plug into a single outlet and/or connect to each other?
posted by Dr. Zira on Dec 17, 2004 - 12 answers

I'm sitting in my living room watch my dining room light turn on and off, dim and brighten, turn off again, then turn on. I know the house isn't haunted, but what is happening to my light? Should I be worried? [MI] [more inside]
posted by pwb503 on Dec 2, 2004 - 12 answers