March 19, 2014
Mohenjo
Science
amazon, beautiful remnants of dying stars, business, Business News, Cosmos, Cosmos Nasa, Flickr, gallery of space photos, Hotels, huffingtonpost, human-rights, medicine, mental-health, NASA, Nasa Cosmos, NASA Photos, Nasa Space Photos, Neil Degrasse Tyson, new TV series, psychedelic vortex, research, Saturn, Science, science geeks, science geeks massively pumped, Science News, Space, space photos, Space Photos Nasa, technology, Technology News, travel, TV, TV series, vacation
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The premiere of “Cosmos,” Neil deGrasse Tyson’s new TV series, has a lot of science geeks massively pumped. And that includes the folks at NASA, who welcomed the 13-part series by releasing a stunning new gallery of space photos on Flickr.
From a psychedelic vortex on Saturn to monster solar flares to the beautiful remnants of dying stars, prepare to get seriously psyched about space.
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‘Black Marble’
This image of Asia and Australia at night is a composite assembled from data acquired by the Suomi NPP satellite in April and October 2012.
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March 12, 2014
Mohenjo
Science
amazon, business, Business News, Earth, Earth Radiation Energy, Earth's Radiation, Federico Capasso, Flickr, Harvard, Harvard Physicists, Harvard Radiation Energy Study, Harvard University, Hotels, huffingtonpost, human-rights, infrared radiation, Infrared Radiation Energy, medicine, mental-health, Physicists, radiation, Radiation Electricity, Radiation Electricity Study, Radiation Renewable Energy, research, Science, Science News, Slideshow, technology, Technology News, travel, vacation
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Our planet is warm. Outer space is cold. Can we take that heat difference and turn it into electricity?
Physicists at Harvard University may have found a way to do just that. They’ve proposed in a new study how to harvest the Earth’s thermal infrared radiation, and convert it into direct-current (DC) power.
“It’s not at all obvious, at first, how you would generate DC power by emitting infrared light in free space toward the cold,” study co-author Dr. Federico Capasso, a professor of applied physics and senior research fellow in electrical engineering at the university, said in a written statement. “To generate power by emitting, not by absorbing light, that’s weird. It makes sense physically once you think about it, but it’s highly counterintuitive. We’re talking about the use of physics at the nanoscale for a completely new application.”
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Physicists at Harvard University may have found a new way to capture the Earth’s radiation and turn it into energy. | Ozgurmulazimoglu | Flickr
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December 27, 2013
Mohenjo
Science
amazon, business, Business News, Daily Discovery, Flickr, Holmium, Hotels, huffingtonpost, human-rights, Karlsruhe Institute of Technology, medicine, mental-health, Physics, Quantum, quantum computer, Quantum Computers, quantum computing, quantum mechanics, Quantum Physics, research, Science, Science News, Slideshow, technology, Technology News, travel, vacation
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Quantum computers could crack codes and run more complex simulations than current machines, but actually building one is hard to do. The bits that store this complex data don’t last long, because they are made of single atoms that get knocked around by stray electrons and photons in the environment.
Enter a team of physicists at Germany’s Karlsruhe Institute of Technology. They found a way to get the bits to last long enough to do computations with, using the magnetic properties of a rare earth element called holmium and the symmetry of platinum. The experiment, detailed in tomorrow’s (Nov. 14) issue of the journal Nature, is an important step in creating quantum computers and making quantum memory useful.
What makes quantum computers powerful is the nature of the bit. Ordinary computers have bits that are 1 or 0, stored in the current in a circuit or the alignment of magnetic fields on a disk. Due to the weirdness of quantum physics, quantum bits, called qubits, can be both 0 and 1 at the same time. That means a quantum computer can do certain kinds of calculations much, much faster.
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Quantum computers can process information much faster than current machines. This image depicts “ion trap” technology developed for quantum computing in a similar, unrelated study at Oxford. | Jeff Sherman | Flickr
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James' World 2 