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Why am I not allowed to use my cell phone in airplanes or hospitals?
electronics.howstuffworks.com/question230.htm
Electromagnetic interference can create problems in some equipment in airplanes and hospitals. Learn about electromagnetic interference from cell phones.
Why do CDs reflect rainbow colors?
electronics.howstuffworks.com/question52.htm
Like soap bubbles and grease slicks, CDs reflect rainbow colors. What makes this happen?
Why do people have red eyes in flash photographs?
electronics.howstuffworks.com/question51.htm
Why do people have red eyes in some flash photographs? Take a look at the science behind why red eyes happen.
Why do you hear some radio stations better at night than in the day?
electronics.howstuffworks.com/question1.htm
Have you ever noticed a difference in the quality of radio signals depending on the time of day? See how radio signals and the Earth interact.
How Analog and Digital Recording Works
electronics.howstuffworks.com/analog-digital.htm
Learn about analog and digital recording and shop for related products.
How Autofocus Cameras Work
electronics.howstuffworks.com/autofocus.htm
Ever wonder how your camera knows what you're looking at? Understand how autofocus cameras lock on to the object you're photographing!
How Batteries Work
electronics.howstuffworks.com/everyday-tech/battery.htm
Batteries power the appliances you use daily. Check out battery experiments, the history of batteries, battery reactions and the chemistry behind battery power.
How Chess AI Works
electronics.howstuffworks.com/chess.htm
AI chess programs calculate their game plan based on formulas - algorithms that determine whether a position is "good" or "bad." But how do they really work?
How Digital Clocks Work
electronics.howstuffworks.com/gadgets/clocks-watches/digital-clock.htm
When you need to know the time, it's about a 50-50 chance you'll turn to some LEDs to find out. Ever wonder what goes on inside a digital clock or wristwatch? Find out about this basic digital technology -- and learn how to create your own digital timekeeper.
How Electric Motors Work
electronics.howstuffworks.com/motor.htm
Electric motors power almost everything in your kitchen, bathroom and office. But how do they perform their magic?