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Transparent body pillars

28.08.2017

In modern vehicles, the body pillars in the windshield area can be quite wide, which interferes with the view and creates "blind" spots. And this increases the likelihood of a collision with a pedestrian or collision with another vehicle. The original solution to the problem was proposed by the Japanese corporation Toyota.

The essence of the method is described in a patent application titled Apparatuses And Methods For Making An Object Appear Transparent. The document was published on the website of the US Patent and Trademark Office this month, although the application itself was filed in June last year.

Toyota proposes to use a special system of mirrors, which, as it were, will make the front body pillars "transparent". In fact, the light will go around these pillars, allowing the driver to see objects behind them.

Thus, the problem of "blind" zones in the windshield area will be solved, which should increase road safety. However, the possible timing of the use of the system in commercial vehicles has not yet been reported.

We add that other automakers are also concerned about the large width of the front pillars. Thus, Jaguar Land Rover offered its own solution to the problem - the 360 ​​Virtual Urban Windscreen complex. It is proposed to mount special displays in the front pillars that receive an image from all-round cameras. As a result, the driver will have the impression that there are no racks at all.

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Economical Solar Powered Water Purifier 09.02.2017

The lack of drinking water is one of the most important problems in the world, even if in Europe it does not yet feel so acute. Qiaoqiang Gan, an engineer at the State University of New York, and colleagues have developed a solar-powered watermaker that costs as little as $2 per square meter of consumables.

"This will allow people to get their own clean water, just like they get electricity from rooftop solar panels," Liu said. The speed of desalination is of great importance - current devices must have an area of ​​​​at least 6 m2 in order to supply one person with a sufficient volume of drinking water during the day. The problem is the huge energy losses for heating water.

Therefore, in recent years, two approaches have been used to increase efficiency - either heat only the top layer of water, or use nanomaterials to collect solar energy more efficiently. The second is technically preferable, but orders of magnitude more expensive - nanomaterials cost hundreds of dollars per gram, and there is no one in developing countries to spend that kind of money on desalination for everyone.

The new device has three main components: first, fiber-rich paper (like the one used to make money) coated with a black layer of carbon (this is a cheap powder left after the incomplete combustion of oil or tar).

Secondly, a bar of Styrofoam (disposable coffee cups are made from this material), cut into 25 lightly joined pieces. they all float on the surface of dirty water to prevent the water from overheating in the sun. These sections are covered with the aforementioned paper, the edges of which are lowered into the water. Accordingly, water, due to the capillary effect, rises up the paper and evaporates there.

Thirdly, and finally, it is an acrylic coating that collects evaporating water. From here, the water enters the clean water tank.

Gunn and his colleagues claim that the installation is 88% more efficient in collecting and transferring solar energy into water. As a result, a device with an area of ​​1 m2 produces 1 liter of water per hour. Now common commercial devices need 4 hours for the same result.

Most importantly, the device is very cheap. Gan estimates that it costs about $1 per square meter - compared to $2 for devices that use lenses to focus the sun's rays. It is enough for a family of four to spend about $1,6 dollars to have the minimum required amount of clean water.

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