Why do the lights in a room dim momentarily when a large appliance is turned on?
912980
it depends on the load and the nature of the large appliance\nthe flush example was great but it does not describe dthe momenteraly effect ( it was nice though).\n\nwhen you deal with inductive loads there is something that is called start up current.  it can be 2 to 6 times the nominal current under normal operation. that means that if a device needs 2 amperes of current when it is originally powered the consumption may reach till 10A. then the current returns to normal copnditions. \nall due to inductive and self inductive effects where the device opposes to the change and so on till an equilibrium is reached.\n\nthe demand of the current during start up is great and that is way momentarely  the lghts dim.
429574
gas emitting visible light as a result of being heated
29771
This is cause by a blackhole that is inhabiting your shadow. The gravitational force of the blackhole sucks the light from street lamps and causes a temporary popped circuit. Once you pass the light should come on after the breaker cools.\n\nWhat is unfortunate is that SLIders have a negative effect on traffic lights and sometimes actaully make the red lights last longer or the green lights shorter. Oddly SLIders have no effect on yellow lights whatsoever.
212281
Generally, appliances use electricity.  Some small amount of it is transformed to movement or light.  The majority of electricity is transformed to hear, which is dissipated to the environment.  Waste hear generated in this manner cannot effectively be captured and used for anything useful.  However, the waste heat generated by the refrigerator, light bulbs, and ovens will reduce the heat needed to keep your house warm in the winter.
296484
Get a lamp with a dimmer and turn it down a notch each night.
248826
Spooky!!!!!!!!\nTry taking a look at scheduled tasks or power management to see if it is set up to go off at that time or on.
303164
have you seen animatrix? anyways, there was this part in the film wherein men prevented sunlight from entering through the atmosphere using some particles...that is what global dimming does. global dimming is the reduction of heat entering the atmosphere because of the by-products of pollutants in the atmosphere that prevent the entering of light. it is somewhat the opposite of global warming. from what i learned, global dimming conceals the true effect of global warming by lowering the atmospheric temperature.\ncheck out this site http://www.globalissues.org/EnvIssues/GlobalWarming/globaldimming.asp it has a more detailed discussion on global dimming. im curious though, dont the particles that prevent the entering of light, also trap the heat energy produced by the biosphere? when you find something, let me will you? thanks
905280
Light 'dimming' is due to a decrease in the intensity of the light that reaches your eyes. This is different from the waves loosing energy or becoming 'shorter.'\n\nThink of it this way... When you shoot a shotgun, the pellets are very dense, grouped closely together, when the exit the barrel. As they get farther away from the barrel, they get farther away from each other. This is kind of what happens with a decrease in intensity.\n\nHere's another way, one that is more applicable to your question. Think of the surface of a star. It is, roughly, a sphere. To make this simpler, lets just think of the star as a circle. (It may help to draw this out as I'm explaining it) Let's assume that all of the light that is emitted comes straight out of the surface. A way to picture this is to draw straight lines from the center of the circle outwards. Do this for a few lines that start out very close together and are almost going in the same direction. Extend these lines out very far from the center. Do you see how, as they get farther from the center, they get farther away from each other?\n\nYou can also draw a tiny dot some distance away from the circle. This can represent the earth. How many lines that initially start out close together actually intersect this dot? Now can you see why the light gets dimmer? It is because only a small fraction of the light that is sent in our direction actually reaches us.\n\nWhile it is true that light waves do extend forever, they do not exist everywhere. To describe where something is located, you can only talk about how probable it is to be located somewhere. This is a consequence of the Uncertainty Principle.\n\nIf you want to know more, I suggest looking at wikipedia or googling Schroedinger's Equation. There are probably other people who can explain it far better than I could.
876245
Its due to the Power Saver option being active. You can change the settings from Start>Control Panel>Power Options.
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=)
524258
Good point! \nCongratulations, that's got me thinking. Ouch!\n\nCould it have something to do with maintaining the frozen goods in the freezer, which obviously is less important in a fridge. Afterall, when the light comes on in the fridge it produces kinetic energy that turns the light into heat which could linger trapped inside once the door is shut again. \n\nWell, that's my feeble attempt at an answer. It would just drive me crazy otherwise!
758508
The most likely cause is faulty memory. Make sure that the dimms are correctly seated and if you have more than one try using them one at a time to find which is faulty. Also make sure that you are not overclocking your PC.
21673
Your monitor might have a light meter built in to it (there's one on my laptop that can be switched off). This dims the screen in low light conditions, and brightens it when there's a lot of ambient light (it's supposed to save energy and make it easier on your eyes).\n\nTry exploring the menu and look for something like "eco sensor" or "ambient light balance".
131801
When electricity is given, the bulb glows because of the power dissipated from the tungsten. This is because of the heat produced when current flows through the filament. So when the current is switched off, no current flows through the filament causing the heat not to be created. So the bulb stops glowing and light energy is not given out.\n\nSince no electric energy is given, no light energy is given out. The already produced light energy (before shutting off) i.e. the photons, are absorbed by surrounding objects so that it no longer produces light.\n\nThe photons are the smallest unit of light like cells in biology. Photons have energy in them. These energies are absorbed by surroundings.
1157469
Very interesting.  it sounds like the wiring leading to the power light or possiblely the battery could be the problem  \nif you can afford it replace the battery  (I recommend Lithiom Ion) (Li ion)
808047
By touching the lamp you are changing the capacitance of the lamp and a circuit inside the lamp detects the change and turns on the light. \n\nIn order to offset sensitivity to temperature and other objects near the lamp it is designed to be triggered by a sudden change in capacitance - so when you slowly touch it, or tap it with an object with insufficient cpacitance then the circuit does not detect enough of a change to trigger.
174509
Ours don't do it every night, but they do it occationally (like once a week or so). I was told it was because the bulbs tend to accumulate moisture inside them and if you don't heat up the bulbs to reduce the moisture level periodically, when you do turn them on they will all tend to blow out really quickly. So, I guess that means using them makes them last longer.