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Vacuum Cannon drives ping pong ball at supersonic speed

Vaccuum Cannon fires ping pong ball at nearly supersonic speed. IMG_0332.JPG

How to Start a Fire Without Matches

9 Ways To Start a Fire Without Matches - better than average list with good details and discussion

▶ Start a Fire by using a Water Bottle as a magnifying glass - YouTube. Impressive. Plastic bag can be used with due care and skill. Urine can be used if desperate! Practicing this system before your life depends on it is advised.

Two+ iPhone multitiool cases with electric fire starters. || The metal coil lighter provides enough heat to light a candle, paper or cigarette without ...

Solar thermal lens for substantial solar concentration using water & clear plastic sheet as lens. ................Impressive! ...Effective and cheap. Useful in a "survival" situation IF plastic sheet available. SOLAR DEATH RAY WATER aqua lens with 1/3 Kilowatt Heat Energy - YouTube

Pouring Lava onto ice to examine its properties. It's difficult for geologists to witness the flow of lava on snow- and ice-covered volcanos, so researchers with the Syracuse University Lava Project decided to create their own simulation, melting 300 kg of lava and pouring it over ice to watch the effects.

Concrete Tiki Rocket Stove

Workshop Featured Instructables - Offset 990 - Explore the Biggest How To and DIY community where people make and share inspiring, entertaining, and useful projects, recipes, and hacks.

Make your own cellphone from scratch.

Phone Wizards provides iPhone repair services at Croydon, Bromley, London. We fix absolutely any issue with iPhone, mobiles and tablets! Book your appointment with an available technical the Same day. Get your phone fixed in the comfort of your own home.