Devices

Ever wondered how that thing works? Explore the inner workings of many common devices and inventions, as well as those that aren't so common, such as compasses, gyroscopes and bug zappers.


How Prosthetic Limbs Work

Your body is a remarkable piece of biological machinery, and your limbs are no exception. Did you ever wonder how prosthetic limbs are made and how they are controlled? And are scientists developing bionic artificial limbs?

Why are lobsters being used in new X-ray technologies?

Lobsters have one of the animal world's most unique vision systems. Researchers hope to apply that system to scanners that will make steel walls transparent.

How Biomechatronics Works

In the TV series "The Six Million Dollar Man," scientists restore a crippled test pilot who lost legs one arm and an eye. While this is total fiction, an emerging field known as biomechatronics is coming close to this vision.

How Crossbows Work

The crossbow, a weapon popular with Wookiees, vampire slayers and some modern hunters, looks like a cross between a bow and a rifle. Read about it’s fascinating history and uses.

How can someone control a machine with her thoughts?

The Rehabilitation Institute of Chicago introduced a new bionic arm that can be controlled by reading a person's thoughts. How does this technology work? Can you control a machine with thoughts? Learn about the bionic arm in this article.

How BrainPort Works

Learn all about BrainPort, a device for sensory substitution by electrotactile stimulation.

How Biometrics Works

With the help of Q, James Bond can breeze through a security system that requires the villain's irises, voice and handprint. Biometrics isn't just for the movies. Real-life businesses and governments are using it. Check it out.

How Rail Guns Work

Rail guns leave gunpowder-based weapons in the dust (one can hit a target 250 miles away in six minutes). So why isn't the military using them? Find out how rail guns can be used and learn about the limitations of this technology.

I just saw a movie where the main character, a British secret agent has been "frozen." In the film, he is revived after 30 years on ice. My friend says scientists are actually working on this stuff. What's up with that?

How CAT Scans Work

CAT scans take X-ray imaging to a whole new level. Find out how a CAT scan machine uses "slices" to form a 3-D computer model of a patient's insides.