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How Capacitors Work

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The capacitor plays a crucial role in electronics - the capacitor stores electrons for when they're needed most. Learn more about the capacitor.

Could blood be used to power batteries?

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Blood batteries as thin as a sheet of paper are currently under development by scientists at Rensselaer Polytechnic Institute. Read about blood batteries.

How the Wii Works

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The Wii has changed the way video games are played. Learn more about the Wii at HowStuffWorks.

How MP3 Players Work

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MP3 players allow you to carry video, pictures or even thousands of songs in your pocket. Read reviews on MP3 players and learn how MP3 players work.

How Virtual Reality Gear Works

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Virtual reality gear includes a monitor, keyboard and mouse. Learn about virtual reality gear and find out how virtual reality gear has evolved.

How Virtual Reality Works

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Virtual reality uses a computer to create a simulated three-dimensional world. Find out how virtual reality works and learn about the future of virtual reality.

How the iPhone Works

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The Apple iPhone is a cell phone that works like a computer. Get the inside scoop on iPhone technology and the hype around the iPhone releases.

How Virtual Surround Sound Works

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Virtual surround sound mimics the effect of multi-speaker surround-sound systems. Learn about virtual surround sound and find out how sound is perceived.

How TiVo Works

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TiVo, a brand of DVR, allows subscribers to record their favorite TV shows and watch them when they want to. Learn about TiVo, TiVo features and HD DVR.

How Netflix Works

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Netflix is a highly successful online movie rental service. Find out how the Netflix movie rental system works and learn about the Netflix shipping process.