Fission and fusion

Both fission and fusion are nuclear processes by which atoms are altered to create energy, but what is the difference between the two?

Spiderweb

Spiderwebs come in many shapes and sizes. Each type is so typical of a certain spider that experts know which spider made a certain web without seeing the spider. The orb web is the best known of all spiderwebs. It can catch large, powerful prey, such as locusts, beetles, and wasps. Some spiders  weave in bold patterns. For example, they might make zigzags and spirals. These patterns help keep the web stable. Some scientists believe that the patterns also help birds avoid flying into the webs.
Orb webs like the one in the video are built with different thicknesses and strengths of silk. The framework includes dry threads that come out from the center like spokes on a wheel. These give the web strength. The circular threads are sticky and stretchy. They trap fast-moving insects and also make the web flexible in wind and rain.

Protecting reputations online

This video discusses the long-term risks of sharing inappropriate information on the Web. It encourages viewers to “think before you click” and offers tips for being responsible with photos, video and stories

The Paper Making Process

Rock paper scissors

I´m sure you have ever played rock, paper, scissors.
But is it possible a robot always wins you?
Watch the video and look for the trick.

How is Glass Made?

Glass is made from a mixture of sand, lime and soda. When these ingredients are heated together, they form a liquid glass. This liquid glass is made into sheets by cooling and flattening. To make objects like vases, craftsmen blow into a glob of liquid glass with the help of a long tube.

Watch this video to find out how glass is made, the processes and methods involved.

Renewable Energy

Learn more about renewable energies, that is, energy sources that are not depleted when used or are naturally replenished within a human lifetime.

Iran's Centuries-Old Windmills

These amazing windmills are among the oldest in the world. Located in the Iranian town of Nashtifan, they have been in use for several centuries. Made from clay, straw, and wood, the windmills stand up to 65 feet in height with grinding stones in a room below for pressing grain into flour. And while there are about thirty similar mills around the area, in 2002 the windmills of Nashtifan were registered as a national heritage site by Iran’s Cultural Heritage Department, unique in that they are one of the few still operational.

Can you trust your cell phone?

Listen in to learn more about what your cell phone knows about you

How do Batteries Work?

You use them to power a range of appliances at home. You also find them in many of your remote controlled gadgets. Watch this video to learn about that battery that powers your remote controlled car, the TV remote or even your PSP.

Hydropower

Hydropower or hydroelectricity refers to the conversion of energy from flowing water into electricity.
Learn more about hydropower

How does a Light Bulb work?

Check this video out and find out for yourself the working of a light bulb!

What is a Pop Rivet?

Metals can be joined together by permanent or temporary joints. Some permanent joints are made by rivets. For this joint we need a riveting tool. At first glance, it is not easy to understand how this tool works. This video shows us how it works.

Autopropelled car!!!

This video will remind you your first project!!!

Public Wi-Fi

How Computers and Electronics Are Recycled

Electronics are filling our landfills, causing our planet immense harm. If you don’t recycle your electronics properly and in a safe way you are causing our environment to become more polluted. Electronics can emit hazardous pollutants, too. All of this, paired with the opportunity to recycle electronics for cash, provides great justification for doing the right thing.

What is Google Wallet?

Google Wallet is a payments service developed by Google that allows people to send and receive money from a mobile device or desktop computer at no cost to either sender or receiver. 

This video sets out to cover some of the basics of Google Wallet and helps you understand what it's all about. It really does stand a very good chance of revolutionizing how we pay for stuff.

Posting Pictures Online

Remember that posting a picture only takes a second but it can last a lifetime.

How do Birds Sit Safely on Power Lines?

Ever wondered how birds sit safely on electricity cables?
Watch this animated video to find out how