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en.wikipedia.org/wiki/Christmas_lights

Christmas lights are lights used for decoration in celebration of Christmas, often on display throughout the Christmas season including Advent and Christmastide. The custom goes back to when Christmas trees were decorated with candles, which symbolized Christ being the light of the world; these were brought by ...

people.howstuffworks.com/culture-traditions/holidays-christmas/christmas-lights.htm

If you've ever been standing in your living room with a strand of Christmas lights that just won't work, you'll love this article. Learn what's going on so you can fix it yourself.

www.wired.com/2014/12/christmas-lights-series-parallel

Dec 15, 2014 ... Why don't your Christmas lights work? Sadly, in the event of a string of lights ... Just about the simplest circuit you can create uses just one battery and one light bulb. In one fun activity, you can give a .... Like I said, in a functioning bulb this wire does not conduct electrical current. There must be some type of ...

energy.gov/articles/how-do-holiday-lights-work

Dec 16, 2015 ... Holiday lights are a great way to learn about the flow of electric current. In a simple circuit, including one in an incandescent light bulb, electricity travels through a closed circuit, passing over a filament, causing it to glow brightly. The more current that passes over a filament, the hotter it will get, the brighter it ...

www.loc.gov/rr/scitech/mysteries/christmaslights.html

During the Christmas season of 1880, these strands were strung around the outside of his Menlo Park Laboratory. Railroad passengers traveling by the laboratory got their first look at an electrical light display. But it would take almost forty years for electric Christmas lights to become the tradition that we all know and love.

www.ciphersbyritter.com/RADELECT/LITES/XMSLITES.HTM

Nov 27, 2005 ... And keeping Christmas light strings running for months or years can get surprisingly tricky. Most light ... As in an ordinary light bulb, electrical energy heats up a tiny metal filament so hot that it glows. The heat ... The shunt is intended to conduct current when the filament fails, but the shunts often do not work.

www.ask.com/youtube?q=How+Do+Electric+Christmas+Lights+Work&v=0MOpfT0f7bQ
Dec 5, 2011 ... Video on how Christmas lights work and why when one bulb burns out they all go out, and about the new lights, that when they burn out, the rest of the ... How do I solve this? All the lights are the same color (little globes) if you go to the middle of the set, the half on the right works, the half on the left does not.

electronics.stackexchange.com/questions/6591/how-are-led-christmas-lights-wired

Nov 11, 2010 ... Most standard LED strings work normally if I load the controller with one incandescent load. I used two 7 watt nightlight bulbs wired in series for a load ( total load 3.5 watts). It works on most controllers. Increase the wattage if it doesn't work. I have one controller with two 15 watt bulbs in series. I put the lights ...

www.familyhandyman.com/electrical/home-lighting/how-to-repair-christmas-tree-lights/view-all

Second, test the bulbs with an inexpensive tester, available where holiday lights are sold and online. Usually, changing a problem bulb (or tightening it) will fix the entire strand. The tester will indicate which bulbs are bad and need to be replaced. (For the tester to work, the lights must be plugged into the electrical outlet ...