Mercury used to be lots of funâ€”before we knew that it could kill you. Hereâ€™s how several pounds of it made the first electric motor spin
By Theodore GrayPosted 08.31.2006 at 2:00 am 1 Comment
There are great things to come in the future, jet cars and all that. But the past held a few wonders too-for example, jars of mercury available at the corner apothecary. Just 50 years ago, people treated the shiny
liquid metal like a toy. Sadly, I´ll never experience the strange sensation of sticking my entire arm into a barrel of mercury, as kids once did during factory tours. Today mercury is considered a horrific poison, so bad that schools are evacuated for
a broken thermometer.
Want to see a real sugar high? Launch a model rocket with Oreo cookies
By Theodore GrayPosted 05.08.2006 at 2:00 am 17 Comments
by Mike Walker
A rocket speeds away, fueled by an oxidizer and Oreo cookie filling.
Food contains an amazing amount of energy. If you don't believe it, feed candy to some kids and watch them bounce off the walls. Of course, tot-baiting is only one way to turn food energy into noise and destruction.
As one of the first synthetic materials ever made, nylon changed fashionâ€”and the world. Now you can make thread yourself by pulling it from a glass of chemicals
By Theodore GrayPosted 05.01.2006 at 2:00 am 2 Comments
In 1938 the E.I. DuPont de Nemours Company, known at the time mainly as a maker of explosives, announced what was arguably the single most important invention in the history of legwear: nylon.
Nylon wasn´t discovered by accident or extracted from a natural source. It was one of the first materials engineered from scratch, based on an understanding of polymer chemistry and a desire to plug what was, apparently, a serious hole in the hosiery department.
Electroplating makes bumpers shiny and rustproof. It also makes these beautiful bits of industrial waste
By Theodore GrayPosted 03.28.2006 at 2:00 am 1 Comment
Plating at Home Cost: $30 Easy | | | | | Hard
You may not want to rechrome a '57 Chevy, but you can coat small objects using kits designed for plating jewelry. This $30 plating pen (pmcsupply.com) uses electricity the same as the bumper factory does, just with a couple AA batteries instead of a car-size transformer.