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February 27, 2017

Dousing Flames with Low-Frequency Sound Waves

A new type of extinguisher that uses sound waves to put out fires has been built by two engineering students in the US. Both chemical- and water-free, the invention offers a relatively non-destructive method of fire control, which could find applications in fighting small fires in the home, and the researchers now hold a preliminary patent application for their device.

While the concept of using sound waves to extinguish flames is not new, previous attempts to realize the principle – including efforts by teams at West Georgia University and the US Defense Advanced Research Projects Agency (DARPA) – had not been successful.

Undeterred by this, as well as initial [...]

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February 17, 2017

Renewable Energy from Evaporating Water

An immensely powerful yet invisible force pulls water from the earth to the top of the tallest redwood and delivers snow to the tops of the Himalayas. Yet despite the power of evaporating water, its potential to propel self-sufficient devices or produce electricity has remained largely untapped — until now.
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February 2, 2017

Laser-Arc Coating vs Friction

Coating engine components with hard carbon reduces friction to almost zero – a development that could save billions of liters of fuel worldwide every year. Now researchers have developed a new laser method to apply the coating on the production line

Scientists already know how to coat components with diamond-like carbon to minimize friction. But now Fraunhofer researchers have developed a laser arc method with which layers of carbon almost as hard as diamond can be applied on an industrial scale at high coating rates and with high thicknesses.

By applying carbon coatings to engine [...]

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April 14, 2015

Adopt a Cloud Server and Heat Your Home for Free

Data centers may be out of the public eye, but 17 percent of technology’s overall carbon footprint is due to their work. Some of the largest data centers host hundreds of thousands of running servers and sit on hundreds of acres of land. In the US, which hosts approximately 40 percent of the world’s data centre servers, it is estimated that server farms consume close to 3 percent of the national power supply. All these servers produce massive amounts of heat, and their cooling requires more massive amounts of energy. While big companies like Google, Facebook, and Microsoft are looking into a variety of ways to make the cooling process greener, one particularly clever solution is coming [...]
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