This is an extremely easy science magic trick that you can perform using pepper, water, and detergent. The trick illustrates the effect of detergent on the surface tension of water. ... more.

This Video teaches you the steps to making an electric pen. ... more.

Expand the description and view the text of the steps for this how-to video. Check out Howcast for other do-it-yourself videos from ninjagoldfish and more videos in the Science & Technology Projects category. You can contribute too! Create your own DIY guide at http://www.howcast.com/videos/new or produce your own Howcast spots with the Howcast Filmmakers Program at http://www.howcast.com/fi... more.

This gun shoots mini-marshmallows with pin-point accuracy. Build an arsenal of them and have war games at your next family gathering or poker night... Video Tutorial ... more.

Learn How to Solder - Basic of Soldering - How to Use Solder and Iron ... more.

This is the basics of tabbing cells together. Tabbing solar cells with tab wire and a flux pen. Evergreen Solar Cells. ... more.

Ever have a screw loose? If so, you might need this easy to build attachment to help you find that screw -- including plastic ones that a magnet would miss. ... more.

A steampunk style lighter in the form of a retro raygun. Get the PDF for this project here: http://blog.makezine.com/archive/2010... For more great projects go to http://www.makezine.com ... more.

Air conditioning has fundamentally changed how people experience the world. When it's hot outside, walking into an air-conditioned house is like walking into another season. Few pieces of technology have had such a striking effect on people's daily lives ... more.

Depending on who you talk to, some view Bluetooth headsets as a novelty, while others heavily rely on the rich features that bring to the table in being a supplemental item to any mobile handset. We've recently managed to acquire one of LG's latest Bluetooth headsets, the LG HBM-585, and managed to put it through its paces to find out what unique features it packs to make it stand uniquely versus ... more.