By: Elton Gahr
Holographs and virtual environments have been a mainstay of science fiction for decades. The idea of experiencing a virtual world where anything can happen is appealing to most people. It could be used to learn, to explore, to play, and almost anything else. The virtual...
By: Leigh Goessl
The April 1986 disastrous nuclear accident at Chernobyl left a devastating effect on the environment when reactor number four exploded. The immediate effects were obvious, but what is less obvious are the long-term effects. In the aftermath of the disaster the effects were felt globally...
By: Ian Yates
A machine gun is in most cases a portable assault rifle that is capable of firing hundreds of rounds, or bullets, a minute. A modern assault rifle has the option of firing in single shot and fully automatic bursts. But how does it achieve this...
By: Jenna Pope
Imagine that you, as an international importer, are able to have a business meeting in Hong Kong at 9:00 in the morning and another meeting in Athens, Greece at 7:00 p.m. You don’t have to make travel arrangements, and you don’t even...
By: Hai Shunxi
Whether powering a house or a city, every electrical generator works on a principle called the Faraday effect. Michael Faraday, a nineteenth century physicist, found that when a magnet moves through a wire loop it causes, or “induces,” electrical current in the wire...
By: Terrence Aym
Scientists at the University of Sydney's Center for the Mind in Australia have created a real-life thinking cap. They did it by jolting the brain with electricity flowing from a strange headpiece with rubber straps and twisted tubes.Although to get a real brainstorm users...
By: Shawn Wells
There never seems to be enough batteries to go around when you need them. There are probably dozens of devices in your home that require batteries to operate, and if you’re like most people, you buy replacement batteries several times a month. Considering the...
By: Amreen Bi
Much of modern industry depends on working with heavy metals and alloys. Often these metals will need to be manipulated and the most common way to do this is by using plasma cutters. How plasma cutters work is both fascinating and intriguing but an overlooked...
How plasma cutters work
By: Nigel Holmes
A plasma cutter is a tool that’s used to cut metal. Plasma cutters range in size from small, hand-held units that an amateur mechanic might keep in his garage to large computer-controlled machine tools that can cut steel up to three inches thick. A...
By: Helen Rollason
Many people believe that air conditioners bring cold air into the home or office when in actual fact the warm air is being removed and recycled back in as cooler air. If you think of an air conditioner as a fridge without the box you...

 

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