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California Federation of Mineralogical Societies, inc. Home. Science Fiction and Fantasy Book Reviews. Nanotrees harvest the sun's energy to turn water into hydrogen fuel. University of California, San Diego electrical engineers are building a forest of tiny nanowire trees in order to cleanly capture solar energy without using fossil fuels and harvest it for hydrogen fuel generation.
Reporting in the journal Nanoscale, the team said nanowires, which are made from abundant natural materials like silicon and zinc oxide, also offer a cheap way to deliver hydrogen fuel on a mass scale. "This is a clean way to generate clean fuel," said Deli Wang, professor in the Department of Electrical and Computer Engineering at the UC San Diego Jacobs School of Engineering. The trees' vertical structure and branches are keys to capturing the maximum amount of solar energy, according to Wang. That's because the vertical structure of trees grabs and adsorbs light while flat surfaces simply reflect it, Wang said, adding that it is also similar to retinal photoreceptor cells in the human eye.
The vertical branch structure also maximizes hydrogen gas output, said Sun. Most talented people on Earth. Insanely Fast Remote Controlled Jet Video. Net Art - Dr. Hugo Heyrman ( ( (Motions of the Mind) ) ) TOKI WOKI. Scroll Clock. A Note on Indian Bow Making or the Secrets of Sinew Revealed. Sinew, the shredded fibers of animal tendon, was used for cordage, binding points on arrow shafts, and for backing material for bows.
Why sinew? What are its properties which make it so desirable for these uses? Obviously it is tough and it shrinks when it dries, but how much? A fairly extensive search of the Stanford library, asking professors of biomechanics, mechanical engineering, and archeology yielded no useful information. It looked like I would have to get my hands dirty and do some experiments on the stuff but first, what did we already know about sinew? Saxton Pope, a professor of Medicine at the University of California in the first part of this century, an intimate of Ishi's, and an ardent bowman, wrote a delightful little book about Indian bows and arrows titled "Bows and Arrows". Pope also did experiments with miniature yew bows backed with rawhide or catgut.
The engineer in me took over. Potential energy: the ability to do work. Kinetic energy: the energy of motion. Favorites. Geoloqi adds 3 partnerships, extends reach to 1.6M devs. Geoloqi, a company helping developers add geo-location abilities to their applications, announced three partnerships today that will enable the company to reach to 1.6 million mobile developers.
Geoloqi, which is pronounced geo-low-key, provides tools developers need to add geo-location features into their apps, but are generally a pain to build. The company closed on three partnerships today with Appcelerator, Factual and Locaid. Appcelerator helps 1.6 million developers create mobile applications in a general sense. Locaid processes location-oriented queries for over 350 million smartphones and adds a layer of security to mobile data transactions, and Factual provides databases for developers to tap into and make content-rich apps. The tools Geoloqi offers can be used to develop with any carrier and on any smartphone. The company is not alone in the space, however. Geoloqi launched in February 2012 and has taken on $350,000 in funding thus far.
Image via Shutterstock. Yer Spot On (51 pics) » EmpireFun - photos, videos, pictures, fun! Photographs From The Competition for National Geographic in 2011. Spice up your mood with an annual National Geographic photo contest,with a deadline for submission of papers until November 30.
Past nine weeks was given to collect and publish public gallery, now see a best collection of works that readers voted for them done by famous artists, In this collection you’ll see Awesome photos of “People”, “Places,” “Nature” and Captions which is written by the authors. 1. By Robert Spanring Many people go to Uluru, but that they see there the things depends on where they came from. 2. The eruption of a volcano chain Cordon Kaulle in Chile. 3. The Arctic beluga fun. 4. Streetcar in New Orleans is coming to St. 5. In this picture – It took almost 6 hours to climb Mount Reyner under the stars.
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