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Can companies beam advertisements into my brain?
You're out shopping when suddenly a voice tells you to buy the product right in front of you. Brilliant gimmick or creepy invasion of personal privacy?
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How Amplifiers Work
It may seem like an audio add-on, but without an amplifier, you'd never be able to hear the music on your CDs. Find out how amps pump it up to 11.
What is the difference between two- and three-pronged plugs?
Ever wonder why some appliance plugs have three prongs and others have only two? What does that third prong do?
How Metal Detectors Work
Metal detectors can do more than just detect metal -- they can tell you the kind of metal it is and even how deep it's buried. Learn how these units pinpoint and identify their target.
Brain Advertising
Amplifiers
Two and Three Prong Plugs
Metal Detectors
what's inside: electronics
HowStuffWorks Electronics answers your home theater system questions and more. Find explanations, reviews, videos and prices on cameras & photography, personal audio, home audio & video systems, and cell phones.
Business Electronics
Businesses depend on reliable electronics equipment to run efficiently. From e-payment to web conferencing, smart technology gives an edge in the marketplace. See more »
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Cameras & Photography
A good photo is part art, part science. Whether you like to manually focus and carry a slew of lenses in a Tamarac bag or go digital and let a high-tech camera do the work for you. See more »
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Gadgets
"Gadget" is a catch-all word these days for nifty devices. We've covered the basics, such as clocks & watches, plus delved into the world of present-day and future high-tech gadgets, such as digital jewelry and restaurant pagers. See more »
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Games & Gear
Video games have come of age as an entertainment medium and the technology continues to mature. Learn about how your favorite video game consoles work, and see what's on the gaming horizon. See more »
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Home Audio & Video
Home audio and video setups are as individual as the people who own them. At its most basic, a home theater includes a TV, some speakers and an audio/video source. Find out about the newest home theater components, and how they work together to give you a superior entertainment experience. See more »
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Personal Audio
For many, personal audio electronic devices such as iPods and other MP3 Players play a pivotal role in our individual entertainment lives. Many of us couldn’t imagine a walk to work or treadmill jog without one. See more »
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Phones
Telecommunications devices, including cell phones, satellite radio or Voice over IP, connect us to one another and to the world of information at our fingertips. Learn all about the technologies we depend upon for efficient communication. See more »
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Solid State Electronics
Solid State Components are the building blocks of today's technology. From batteries and circuit breakers to oscillators and microcontrollers, they make up the gadgets and machines that we use every day. See more »
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Trade Shows
The Consumer Electronics Show is THE place to view the newest high-tech gadgets each year. HowStuffWorks has been right there, covering the show, since 2001. See more »
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How Portable Audio Studios Work
Freed by the latest technology and dipping prices, bands are now able to put together their own recording studios -- and take them on the road.
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