Help me figure out if compact fluorescents are the right lights for my outdoor light fixture? Difficulty: the fixture is on an electric eye, the weather gets really cold in the winter, and the lights will be oriented vertically (with the sockets on the bottom). [more inside]
How can light have momentum? [more inside]
Can anyone recommend a good sunlamp for getting Vitamin D? [more inside]
Does light have magnetism?
What can you tell me about these old ceiling light fixtures? [more inside]
What causes laser source speckle patterns, and why do they remain constant even if the observer moves?
Why doesn't the speckle pattern that you see around the source of a laser change when you move your head, and what causes the pattern? [more inside]
Is it possible to spray something on clear light bulbs to make them frosty and not make them dangerous? [more inside]
Help me find the right pair of minimalist shoes! I've been a member of a Crossfit gym for six months, which means I've been exposed to the peer pressure regarding Vibram FiveFingers. Plus, I'm starting to travel a lot (and lightly) and want a pair of running shoes that have a small footprint (heh) when packed in a suitcase. Recommendations for this recreational runner? Are Vibrams a good option? Which model? How do I size them? I'm training for next October's Portland Marathon, if that makes a difference. Bonus points for shoes available at REI (though that's not a requirement).
The SRS light on my 2003 Honda Civic comes on when the ignition is turned on and remains on while the car is being driven. I googled this and understand that Hondas as well as other cars have this problem. I can take it to a mechanic to have it diagnosed and repaired. Or I can turn it off myself which I'm tempted to do since it appears that Honda has a faulty system that has nothing to do with the airbag --just the light. But there is a small part of me that wonders and is concerned if something could be wrong with the airbag. Does anyone have experience with this?
Is there a portable light that is as useful as the x-mini speaker? [more inside]
I want to put a light on my bike helmet. Do you have any specific products or strategies to recommend? [more inside]
Can you help me find this outdoor porch light? [more inside]
Can someone recommend me a folding road bike please.. [more inside]
What are those A19 light bulbs with the silver in the center called? [more inside]
One dead laptop, means time to go shopping. Help me askmetafilter.....again. [more inside]
I am an artist. I broke an old lamp that I used as my main light when drawing and coloring. Can you please suggest some cool lamps you know? [more inside]
Looking for opinions on commuting from Greenlake or Beacon Hill to downtown Seattle and downtown Bellevue. [more inside]
How to attract the attention of a be-headphoned person in a cube across an aisle facing away from the entrance without touching them? Ideally this would be inexpensive and not require any hardwiring. [more inside]
I have two problems with the bedroom door in my apartment. First, light gets through the 0.5-inch gap underneath it and wakes me up. Second, my Roomba bounces against it, causing the door to bounce against its spring doorstop and close, trapping the Roomba inside. [more inside]
Can the infrared light of a tv remote control be seen by airborne rescue personnel? [more inside]
Where can I find this light fixture? [more inside]
Photographers, what's the best time of day for a senior photoshoot? [more inside]
Why did push-button light switches go out of fashion? [more inside]
What is the name of the light that comes in as the background around 1:05 of this video? Bonus points for other wacky disco lights you can tell me about.
What are the odds that I'll see the northern lights? [more inside]
I love cranberry juice. It is the best juice. It is delicious. Is it bad for me? [more inside]
What are some good ideas to preserve your health and happiness if your flat has windows, but they are covered with exterior metal roller doors? [more inside]
Have you ever worked in an office without windows? [more inside]
I'm thinking of renting a room with no windows! Yes/No? [more inside]
How do I change the lightbulb inside this light fixture? It has no obvious fasteners or screws. I tried twisting it, but it's not really budging in a reassuring way. I'm staying at a rented beach house, and I am extremely leery of using undue force. [more inside]
Help me solve an optical puzzle. How might I make this fictional camera obscura work, given the parameters of my fictional location? [more inside]
I have a candle and its brightness is exactly one candle power or candela. If I buy a 10,000 candle power torch/flashlight, does that mean it's 10,000 times brighter (and what does that mean) or that I can see it 10,000 times further away? Are these the same thing and why do they seem unbelievable?
How much damage am I likely to do to my laptop if I leave it running with the screen closed? [more inside]
I need advice on how to pack as lightly as possible for a ten-day trip to Italy in late June. [more inside]
What's the least offensive light beer? [more inside]
Do they actually make and sell solar garden/path lights that aren't total crap? [more inside]
My boss' small business, an exhibition, spends a lot of money on electricity due to all of the display cabinet's lights. Is there a grant or loan we can get to change over to low power lights? We are in England.
[artFilter] Can anyone tell me what light sources are being used in this art installation? [more inside]
Just moved into a windowless office. The lack of daylight is killing me. Please suggest hacks to brighten my office. [more inside]
What just scared the crap out of me? Hallway light went on for about 15 seconds, then off, and is now burnt out. [more inside]
I have three big, lightweight, plastic spheres, and want to turn them into a three-light swag-type fixture. It would be cool to have all three controlled by one switch (kinda like a three-way floor lamp). Is there an easy way to do this? [more inside]
SurelyThisProductExistsFilter: Where can I find a metal tube with a threaded, transparent cap? [more inside]
I'm redesigning my workspace and starting with the lighting. I'm looking for suggestions for tall lamps that I can clamp onto my table and have shades that would cover large/high watt CFLs. [more inside]
Husband got red light ticket in the mail. It wasn't him driving. He sent it back and marked the box that he wanted to contest the ticket. What should he do in court (WA state)? Does he have to say who was driving (it's a photo of the car, no picture of the driver)? He kind of has proof as to where he was at the time of the ticket.
What's the best way to set up a dimmer switch in my room which is controlled by an alarm clock? [more inside]
I'm looking for something like a laser pointer that can be comfortably and easily attached to one's body. Not a flashlight; this light should show a clear point that can be used to check body alignment.
Which light-weight yet powerful laptop should I buy? I like the Sony Vaio Z, followed by the MB Air and the Thinkpad X200. Am I missing any models? [more inside]
I'm looking for something like Feynman's explanation for how a difraction grating works only for the absorbance of a colored chemical in solution. [more inside]
Why did my Subaru outback lose power steering on this rainy night? [more inside]
What are my options for a cheap, small Mac laptop? [more inside]