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cell phones

Cell Phone Technology
Image: iStockphoto.com/Alkalyne

Cell Phone Technology

Did you know that your cell phone is actually a radio — an extremely sophisticated one? Or that all cell phones use two radio frequencies for every call?

Take a look at the cellular system at the heart of mobile telephones, what exactly happens when someone tries to call you, and the components that allow a cell phone to process millions of calculations per second.

University of California, Santa Barbara
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Cell Phones on the Brain

Cell Phones on the Brain

Scientists don’t know yet if cell phones are bad for the brain. But now they know that when an active cell phone is pressed against the ear, the brain gets busier. Get the details. More...

Article
Science News for Students
Gadget Savvy: Cell Phones Quiz

Gadget Savvy: Cell Phones Quiz

Think you've got the 4-1-1 on all things cell phone? Put your knowledge to the test. More...

Article
Discovery
The Stuff of Smartphones

The Stuff of Smartphones

Androids, Blackberries, iPhones, and other mobile devices showcase revolutionary advances in materials science and engineering. Take a closer look. More...

Interactive
NOVA/PBS
Cell Phone Cameras Have Space Origins

Cell Phone Cameras Have Space Origins

Did you know that one in every three cell phone cameras on the planet uses technology that was invented for NASA spacecraft? We're not kidding. More...

Article
Space.com
Oeuf the Wall

Oeuf the Wall

More evidence that you can't always believe what you see on the web: Cell phones can't pop popcorn or cooks eggs. Get the facts. More...

Article
Snopes.com
T-Shirts Developed that Could Charge Mobile Phones

T-Shirts Developed that Could Charge Mobile Phones

Meet researchers who turned T-shirt fabric into a "supercapacitor" capable of charging portable electronic devices, such as cell phones. More...

Article
BBC
The Awesome App Race

The Awesome App Race

Want to find out more about earthquakes? There's an app for that! The SciGirls set out to create a smartphone app to highlight the history and geoscience of the 1989 San Francisco Earthquake. More...

Video
SciGirls/PBS
Cell Phones and Health Hazards: Mythbusting in Science

Cell Phones and Health Hazards: Mythbusting in Science

As cell phone usage continues to rise, so do fears about potential risks. Take a closer look at what we do and don't know. More...

Article
Nature
How Mobile Broadband Services Work

How Mobile Broadband Services Work

The same technology that makes cell phones work is behind mobile broadband. See how radio waves let you surf the web and check your email from just about anywhere. More...

Article
Discovery

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