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What does Alt+F4 do?

computer.howstuffworks.com/question266.htm

Someone suggested during an online computer game that someone press Alt and F4 at the same time. Another player said you better not. I've asked AOL people about this but have gotten no response. Can you tell me what would happen?

How does a candle work?

home.howstuffworks.com/question267.htm

How do candles work? What keeps the wick burning, seemingly forever, when the same twine would completely burn up in a matter of minutes if it weren't engulfed in wax? Why won't the wax burn without a wick?

How do proximity-type Christmas-light testers work?

home.howstuffworks.com/home-decor/seasonal/question270.htm

Proximity Christmas light testers detect the alternating electromagnetic waves in the lights. Learn more about proximity Christmas light testers.

How do stud finders work?

home.howstuffworks.com/question271.htm

I have an electronic stud finder, and I am amazed at how well it works. How does it know where the studs are? Read this to learn how stud finders work.

Why are my power bills so high? Which appliances use the most power?

home.howstuffworks.com/question272.htm

Just reading a power bill is a tricky way to determine what appliances are using the most power. Learn why your power bills are so high.

How does the light gun for a video game work?

electronics.howstuffworks.com/question273.htm

How does a video-game light gun work? How does the game know where the gun is aiming?

How do scratch-and-sniff stickers work?

science.howstuffworks.com/innovation/science-questions/question274.htm

How do scratch-and-sniff stickers work? What makes them last for years and years?

How does a Zip drive store so much more data than a floppy drive?

computer.howstuffworks.com/question277.htm

The main thing that separates a zip drive from a floppy disk is a magnetic coating. See how this coating makes an impact on zip drive storage.

How do the automobile ignition keys with chips embedded in them work?

auto.howstuffworks.com/car-driving-safety/safety-regulatory-devices/question282.htm

A friend of mine just bought a new car and it has a neat security feature. The ignition key has what looks like a microchip embedded in it. The owners manual says that without this chip, the engine either will not start or will start and then die immediately. How does this microchip on the key prevent the engine from starting?

What Are Frankincense and Myrrh?

science.howstuffworks.com/life/botany/question283.htm

The three wise men in the story of Christmas carried gold, frankincense and myrrh. What are frankincense and myrrh? Can you still get them these days?

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