How to Make A Prison Lighter From a Bubble Gum Wrapper

Grab a pack of gum that has the tin wrapping around it and a battery. Cut out a thin strip of the wrapper, and at the tip make it about 1/8 of an inch.

Once done, touch both ends to the + - ends of the battery and lighter it up.

How Does a Transistor Work?

How does a transistor work? Our lives depend on this device. When I mentioned to people that I was doing a video on transistors, they would say "as in a transistor radio?" Yes! That's exactly what I mean, but it goes so much deeper than that. After the transistor was invented in 1947 one of the first available consumer technologies it was applied to was radios, so they could be made portable and higher quality. Hence the line in 'Brown-eyed Girl' - "going down to the old mine with a transistor radio."

But more important to our lives today, the transistor made possible the microcomputer revolution, and hence the Internet, and also TVs, mobile phones, fancy washing machines, dishwashers, calculators, satellites, projectors etc. etc. A transistor is based on semiconductor material, usually silicon, which is 'doped' with impurities to carefully change its electrical properties. These n and p-type semiconductors are then put together in different configurations to achieve a desired electrical result. And in the case of the transistor, this is to make a tiny electrical switch. These switches are then connected together to perform computations, store information, and basically make everything electrical work intelligently.

Infinite Solutions: How to Recharge Batteries

The right kind of batteries are never around when you need them. I'm Mark Erickson, and this is Infinite Solutions: Home Edition. In this episode, I'll show you how to recharge dead batteries using other types of batteries that still carry a charge.

LEGO Steampunk Walking Ship

This custom walking machine is built entirely out of LEGO components.

The walking mechanism is based on the Strandbeest kinetic sculpture created by Theo Jansen.

Steve Jobs on His Legacy, 1994

Clip from Steve Jobs: Visionary Entrepreneur, a 60-minute film.

This enlightening one-hour program stars Steve Jobs from an exclusive 1994, unscripted interview by the Silicon Valley Historical Association where he gives advice to potential entrepreneurs. Jobs discusses risk, failure, his own experiences, and learning the value of creating your own environment.

Hackers: Wizards of the Electronic Age

Steve Wozniak, Andy Hertzfeld, Bill Atkinson, Lee Felsenstein, Richard Stallman, Richard Greenblatt, Steven Levy and others.

Hackers is a classic documentary about the midnight programmers that created the personal computer revolution.

Hackers is not about malicious code-crackers. It is about a "hacker ethic" that led to major breakthroughs in technology, and forever changed our world. From the first MIT hackers to popular Silicon Valley inventors, this program covers this fascinating cultural phenomenon through interviews with twelve of its early pioneers.

Hackers was produced over a decade before the advent of the Internet. All interviews were shot over a long week-end in 1984, at the first Hackers Conference, hosted by Whole Earth Catalog editors Stewart Brand and Kevin Kelley, in Sausalito, California.

Project Loon: The Technology

We believe it's possible to create a ring of balloons that fly around the globe on the stratospheric winds and provide Internet access to the earth below. Balloons present some really hard science problems, but we're excited about the progress so far.

Bruce Sterling - Keynote at AWE 2013

Sterling is an American science fiction author who is best known for his novels and his work on the MirrorShades anthology which helped define the cyberpunk genre. In the last few years, Bruce has been regarded as the prophet of augmented reality, covering and critiquing the emerging field and has headlined previous ARE events. Sterling shares his views about the state of the augmented world - at Augmented World Expo. See more at

Professor Richard Dawkins: It Works

Doodle-animation. Professor Richard Dawkins answers a question from the audience at the Sheldonian Theatre, Oxford, on Friday 15th February 2013.