Search Results | electric light
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How Relays Work
electronics.howstuffworks.com/relay.htm
Powered by electromagnets, a relay is simply a mechanical switch, and you'll find them all over a typical house or car. Find out what these simple components are doing in all your electrical stuff.
How Refractive Vision Problems Work
health.howstuffworks.com/human-body/systems/eye/vision-refractive.htm
Millions of people have refractive vision problems -- when the eyes get blurry or can't focus on an object. Learn about four major types of refractive vision problems.
What is dark energy? And could we tap into it?
science.howstuffworks.com/environmental/energy/dark-energy.htm
Shedding light on dark energy has been a bit of a challenge for today's astronomers. What dark energy actually is goes beyond our present scientific understanding.
What's a scanning backlight?
electronics.howstuffworks.com/scanning-backlight.htm
A scanning backlight can be found in TVs and activates when and where it's needed to produce images. See how scanning backlights are used.
How LCDs Work
electronics.howstuffworks.com/lcd.htm
Learn about LCD technology, get LCD buying tips, read LCD reviews and compare prices and features on popular LCD models.
How Scanners Work
computer.howstuffworks.com/scanner.htm
Before the digital camera explosion, flatbed scanners were the way to get images into a PC and online. These devices turn images on paper into data you can access on a computer. Find out how scanners analyze, process and transfer images.
What if I put a one horsepower engine into my car?
auto.howstuffworks.com/one-horse-engine.htm
A one horsepower engine would not be very practical if you were to put it in a normal car. Learn more about a one horsepower engine in this section.
How Air Purifiers Work
home.howstuffworks.com/air-purifier.htm
Americans spend an estimated $250 million annually on air purifiers for their homes. Learn why people buy air purifiers and how they work.
How to Repair a Dryer
home.howstuffworks.com/how-to-repair-a-dryer.htm
A dryer is a large drum into which wet laundry is loaded. Air heated by a gas heater or electric heating element is blown through the drum to dry clothes. Learn to repair a dryer.
How Bug Zappers Work
home.howstuffworks.com/bug-zapper.htm
Bug zappers can help keep your backyard free of pesky insects. Find out how bug zappers kill insects and take a look at the inside of a bug zapper.