Similar to the light bulb question.?
336816
Yes. Even though you cant hear it, it is still turned on so therefore using electricity
370248
This is a nice problem.\n\nSwitch on one of the bulbs and wait for it to heat up. Turn in off and switch another one. Go downstairs, and feel the hotness. The hot bulb corresponds to the first switch and the one that is on the second switch. The one that is off is for the switch that has not been touched.
816552
Turn on one light bulb and leave it on for a while. Turn it off\nTurn on a second light bulb and leave it on. Go up stairs.\nThe second switch obviously turns on the bulb that is on.\nThe first switch (you turned on then off) is for the lightbulb that is NOT ON but is warm from being used. \nThe  3rd switch obviously is the one for the unlit lightbulb that's cold.
516877
The incandescent light bulb or incandescent lamp is a source of artificial light that works by incandescence, in which an electric current passes through a thin filament, heating it and causing it to emit light. The "bulb" is the glass enclosure around the filament that often contains a vacuum or is filled with a low-pressure noble gas to prevent the filament from burning out due to evaporation at the high temperature.\n\nIncandescent bulbs used to be known as electric lamps, extending the use of a term applied to the original arc "lamps", and in Australia and South Africa they are also called light globes. Because of their relatively poor energy efficiency and yellowish color, incandescent light bulbs are gradually being replaced in many applications by fluorescent lights, high-intensity discharge lamps, LEDs, and other devices.
1184666
(1) C\n   B = D + 2\n   M = B + 4\n   M = ( D + 2 ) + 4\n   M = D + 6\n\n(2) E\n   B = 2H\n   M = B + 6\n   M = ( 2H ) + 6\n   M = 2H + 6\n\n(3) D\n   12 bulbs / x minutes\n   12 bulbs / ( x minutes ( 1 hours / 60 minutes ) )\n   12 (60) bulbs / x ( 1 hour )\n   ( 2 (12) (60) ) bulbs / x ( 2 hours )\n\n(4) D\n   Stop 1: x\n   Stop 2: x + y\n   Stop 3: ( x + y ) / 3\n   Stop 4: ( ( x + y ) / 3 ) + 2 = ( x + y + 6 ) / 3
613962
Since you mean the light bulb is good, then a whoosh of the gas Argon will come out of the bulb.  If you were careful, you could do this without breaking the bulb.\n\nDon't try to do it unless you wear protective eyewear and hand protection!  The bulb is under some pressure; it is not a vacuum.
306346
I guess so.. That's kind of stupid though. Why would you want to change a lightbulb with your feet? Once you get the bulb situated to where it stays in the socket without falling, then it would be pretty easy to keep it rotating until the electricity can circulate throughout the bulb. Try it...
824158
You have to turn one light on for a while so that it'll warm up, turn it off and then turn another light on. then you can go into the room and feel the two unlit bulbs - whichever one is warm is the first one. The lit bulb is the second and the cold bulb is the third\n\n=)
1104822
Picture a lamp close to a wall.  The lamp has a shade that is a cylinder, (shaped like a tin can with the top and bottom cut off).  The shade is parallel to the wall.  When the light is on, the shape of the light on the wall is a hyperbola.\n\nReally!
629262
http://en.wikipedia.org/wiki/Light_bulb#History_of_the_light_bulb
753725
I assume the goal is to achieve a specified level of illumination and pattern (uniform perhaps?). Consider the light output of the bulbs and the distance from the area to be illuminated (does the room have high or low ceilings?). Consider the type of bulb and lamp structure as to how much of the bulb output is directed toward the desired area. I'm not aware of any simple formula.
1072750
turn on the first 2 switches  let them sit for a little while.  then turn on the 1st and 3rd switch.    go into the room right away, if the bulb is hot but off that means it was the 2nd one (because the switch is now off but it had to be on)  if the bulb is cold still (not really hot) it was the third one because the light just turned on and the 1st one didn't turn it on at all  if it is not on and the bulb is not hot at all it was the fourth because you never touched that switch  it was on and hot then it was the first because it was on long enough for the bulb to get hot.  \n\nso... when only the 1st and 3rd swith was on (after turning off 2)\n1=if it was on and hot\n2=if it was off and hot\n3=if it was on but cold\n4=if it was off and cold
907449
Two- one to change it, the other one to scratch its bottom. :-)\n\nHow many economists does it take to screw in a light bulb?\n\nNone. If the light bulb really needed changing, market forces would have already caused it to happen.
728066
One to try to enslave another to change the light bulb. One to blame all the others for being the reason the light bulb doesn't work, etc. On to say they did it better than everyone else when they didn't even touch the light bulb, etc. In essence, billions but teh lightbulb will never be changed. Racists like blame and accusations not solving problems.
827565
The voltage readings on the light bulbs are not what they definitely operate in, but optimim values. What is constant is their resistances, and connecting a larger voltage to a lower valued bulb will increase the current across it, and there is a possibility that this will burn the bulb.\n\nHowever, if you connect several bulbs in series to a higher voltage source, i.e. 3, 3, and 6, to a voltage source of 12 V, they should all be within the optimim values.\n\nGenerally speaking though, the bulbs in your example should still be ok (although they will shine much more brightly) unless you connect them in parrallel. (a volmeter across them would probably read about 4V and 8V if you connect them in series)
310889
get some batteries, get some wires, and a very small lightbulb and a socket. So it should look like this:\nBattery(+) ... wire ... paperclip ... lightbulb ... wire ... (-)Battery
831271
Dear Madame,\n\nYou could try testing wave-particle duality nature of photons, and report on how the theory corresponds with Schodiger's findings in the early 20th century. \n\nAnyone can put a light bulb in a potato. Also, the above response about commercials is about as unscientific as you can get. I don't trust emus.\n\nPianoguy