How do I wire up this infra-red mains light switch. [more inside]
When a candle is burnt indoors, what happens to the wax? An amount of smoke equivalent to the mass of the candle is released as it's burnt (?)--does this manage to escape the house, or does most of it stay in the room and coat the walls, floors, ceiling, etc.?
I have a budget of $75-$100 for a bike headlight. I am seriously considering NiteRider's MiNewt-USB. Does anyone have any other recommendations, or anecdata about the MiNewt? [more inside]
What are some great examples of paintings that make dramatic use of light and shadow? [more inside]
Who did this musical rendition of the Charge of the Light Brigade? [more inside]
OMGShoes: I have SauconyBullets right now. They're the best shoes I've ever had. I love them. Are there more ultra-light almost-nothing xc-inspired shoes like these? [more inside]
Would a wind-up light that doesn't rely on charging a battery, but uses a clockwork mechanism to directly power a small generator which lights up an LED, be possible? [more inside]
Why did my light fixture start turning off and on randomly? How do I fix it? [more inside]
Why does an incandescent light bulb have an broad, continuous spectra when viewed with a spectrometer? Why doesn't it have some lines like a sodium lamp? I guess I'm asking why photons come off of a black body and why are their wavelengths spread out. Bonus points for clarity and accessibility of the answers.
The "battery not charging" light on my dash went on; the mechanic told me I need a new alternator. Now the "battery not charging" light has turned itself off again. Does this mean my battery is, in fact, charging? [more inside]
How can I light up my apartment? [more inside]
I am a hobbyist photographer starting to do some serious studio work and I need help deciding on lighting equipment. [more inside]
Help finding the coolest burning bulbs for my bathroom vanity... [more inside]
We have a street lamp in front of our house that seems inordinately bright. We currently have cardboard in our windows to keep the light out so we can sleep at night. [more inside]
Looking for tips on creating a crazy black light troll costume. [more inside]
I'm wondering if there is an "organic" alternative to the very popular Crystal Light drink mixes these days. CL is full of artificial sweeteners, flavors, food coloring, the whole shebang.
Apropos of nothing, why would the wiring going to the fog lights on a US 2002 VW New Beetle have an extra unattached plug on it? This is not the lowest model, but came with the fog lights standard. I wonder if one of the upscale versions had fog lamps with two bulbs in each light or something that would have required another plug. On second look, it occurs only on the drivers side wiring, the passenger side looks normal. Please stop me from agonizing over this superfluous detail!
Where can I find some small, cheap flashing lights? It doesn't really matter what kind of light they are as long as they flash, a variety of colors would be nice but not necessary, the ability to turn them on and off is nice but not necessary, they shouldn't require a cumbersome power source but they don't need to last much longer than ten minutes, and I need to be able to obtain them by tomorrow (Saturday) in NYC. [more inside]
The backlight on my 5-year-old laptop screen has just started to get dimmer and pinkish in the corners. How long do I have before it goes completely out? Days? Weeks? At any moment?
Daughter has a science fair problem. Where can I buy light filtering gels? [more inside]
I need some creative ideas for decorating the thin border of unpainted wall space surrounding some new decorative light switch covers. [more inside]
How does visible light damage ancient documents? [more inside]
I am trying to buy a LED headlamp on ebay...they range in brightness from 8 to 30+ and the one I want is 8. Is that goint to be bright enough for pitching a tent in the dark? I tried to look up LED levels on the inter-web but all I found was scientific mumbo jumbo, can someone just tell me which one to buy please!? Thanks
I'm looking for a particular kind of strobe light. [more inside]
how do I enable constant backlighting on my keyboard? [more inside]
What is that building on Water Street at John street in downtown NYC (you can see it on street view on googlemaps)? What are those numbers for? Is it a clock or counter or something?
My 2002 Honda Accord brake light is coming on some mornings when I start the car but goes off after 10-15 min. It started this winter and I thought it was just needing to warm up the brake fluid. But today is balmy and it happened again. [more inside]
Can I make a freestanding fluorescent light fixture like this or this from a regular fluorescent light fixture and bulb? [more inside]
How do I avoid setting my kitchen on fire with halogen lights? [more inside]
How does Einstein prove nothing can go faster than the speed of light and that Atoms exist? [more inside]
What are the Names of all the riders involved in the disastrous Charge of the Light Brigade led by Lord Cardigan during the Battle of Balaclava on 25 October 1854 in the Crimean War?
Names of all the riders involved in the disastrous Charge of the Light Brigade led by Lord Cardigan during the Battle of Balaclava on 25 October 1854 in the Crimean War? [more inside]
I have a light switch on the wall that controls both an overhead light and an outleft. I'd like it to only control the overhead light, while still sending power on to the outlet. [more inside]
Is Al right? Am I really saving the environment by switching to CF bulbs? [more inside]
I've been aware of a tendency toward winter blues for many years, but this winter is really kicking my ass already. I think I'm ready to look into a little treatment, and I'd like some advice. Yep, I've read all of the previous AskMes on this. [more inside]
What, if any, is the relationship between bandwidth and power? [more inside]
Do the green light triggers for motorcycles actually work? [more inside]
Every since the daylight savings change last weekend, my favorite local AM talk station only comes in sporadically. What in the world could be going on? [more inside]
It's getting colder and darker by the day. Give me your strategies for coping with winter! [more inside]
I live in university apartment housing with no overhead lighting in my bedroom. When I am in bed trying to study, I sometimes have difficulty reading what I am supposed to be studying due to a lack of light in the room. I wear glasses but not for reading but either way, with or without my glasses, my eyes ache while trying to read. What I think I need is more light coming from behind me instead of from the front of me, where the only light is currently coming from via my desk lamp, whose head I have angled upward and towards the wall so the light hits the wall and diffuses throughout the room to illuminate it as brightly as one 60 Watt bulb can. [more inside]
What would happen if you could create a perfect two-way mirror into a sphere? [more inside]
Why does my ETC Source Four Ellipsoidal light smell like it's on fire? [more inside]
Best replacement for light bulbs in apartment building halls and common areas? [more inside]
Where can I find extremely warm tights for outdoor wear? In tan? [more inside]
How can I keep scoreboard light bulbs from working their way loose? [more inside]
What is going on with my 1998 Mercury Sable? [more inside]
Lamps for the plants and me? [more inside]
Let's say I'm toying with the idea of making my own scanner for negative film. I've found a suitable sensor, and the rest of the mechanism looks manageable. Can I get a suitable light source that will compensate for the orange mask, at a reasonable price? [more inside]
Low-light DIGITAL photography without the smears or grainy colored dots? Long question and possibly NSFW conversation inside. [more inside]
I need to locate two light fixture mountings that have been plastered over in the ceiling of my condo. [more inside]