Crystal Black
Jun 16
2009
2009
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A novel way to concentrate sun’s heat (MIT)
Most technologies for harnessing the sun’s energy capture the light itself,
which is turned into electricity using photovoltaic materials. Others use the
sun’s thermal energy, usually concentrating the sunlight with mirrors to
generate enough heat to boil water and turn a generating turbine. A third,
less common approach is to use the sun’s heat — also concentrated by mirrors —
to generate electricity directly, using solid-state devices called
thermophotovoltaics, which have their roots at MIT dating back to the 1950s.
Now, researchers at MIT have found a way to use thermophotovoltaic devices
without mirrors to concentrate the sunlight, potentially making the system
much simpler and less expensive. The key is to prevent the heat from escaping
the thermoelectric material, something the MIT team achieved by using a
photonic crystal: essentially, an array of precisely spaced microscopic holes
in a top layer of the material.
The approach mimics Earth’s greenhouse effect: Infrared radiation from the sun
can enter the chip through the holes on the surface, but the reflected rays
are blocked when they try to escape. This blockage is achieved by a precisely
designed geometry that only allows rays that fall within a very tiny range ...
Crystal Black "King Kong" shrimp
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Keurig B70 Platinum Brewing System $119.69 The Elite Brewing System is Keurig's gourmet home brewing made affordable. The Elite Brewing System, the most affordably priced Keurig kitchen brewing system, offers K-Cup® coffee, tea and hot cocoa brewing as the elite choice to any drip coffee maker. The Elite offers two cup sizes for brewing options with the programmable feature of Auto Off. The 48-ounce removable water reservoir holds up to 6... |
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Bialetti 6800 Moka Express 6-Cup Stovetop Espresso Maker $29.99 Invented in Italy in 1933, the Bialetti Moka Express is an internationally popular coffee maker with over 200 million sold. The aluminum unit is easy to use: simply put water and coffee grounds in the lower chamber, set the device on the stove and in just a few minutes, delicious crema-topped espresso will bubble up into the pot. The coffee tastes authentically Italian, and it comes at a fraction ... |
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Bialetti Moka Express Stovetop Espresso Makers The world's best selling coffee pot, the Bialetti Moka Express was invented in 1933 and remains virtually unchanged to this day. Simple to own and simple to operate, the Moka Express is a masterpiece of industrial design. Free CaffeSolo Moka Coffee with each purchase.... |
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Black Keys Live at the Crystal Ballroom $6.98 Studio: Wea-des Moines Video Release Date: 11/18/2008... |
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iPhone 4S Sparkling Glitter Vinyl Antenna Wrap for AT&T , Sprint, and Verizon - Sparkling Silver $9.99 Here at Kellokult, we love our iPhones, and the best thing about them is how every one is unique: everybody has a different combination of apps that change all the time. We thought, why cant we have the outside be just as unique and flexible? Designed for users who want their iPhone to stand out without weighing it down, Kellokult antenna wraps are the perfect highlight to the famous iPhone profil... |
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AT&T iPhone 4 Sparkling Glitter Vinyl Antenna Wrap, Sparkling Silver $9.99 Here at Kellokult, we love our iPhones, and the best thing about them is how every one is unique: everybody has a different combination of apps that change all the time. We thought, why cant we have the outside be just as unique and flexible? Designed for users who want their iPhone to stand out without weighing it down, Kellokult antenna wraps are the perfect highlight to the famous iPhone profil... |
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Snow White and the Seven Dwarfs (Walt Disney's Masterpiece) [VHS] $2.95 Walt Disney's Classic Masterpiece movie. Comes in plastic protective case enjoyable entertainment for young and old.... |
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Monsters, Inc. [VHS] $13.84 The folks at Pixar can do no wrong with Monsters, Inc., the studio's fourth feature film, which stretches the computer animation format in terms of both technical complexity and emotional impact. The giant, blue-furred James P. "Sulley" Sullivan (wonderfully voiced by John Goodman) is a scare-monster extraordinaire in the hidden world of Monstropolis, where the scaring of kids is an imperative in ... |
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City Slickers 2 [VHS] $2.29 ... |
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Malaga Black Crystal Necklace $168 Stand out with this Malaga black crystal necklace. A large, faceted crystal in a bold black color shimmers in the sunlight. The black crystal hangs from a smooth open circle also in black. Both pieces dangle from a long gunmetal chain. |
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Retro Accessories Candelabra black $280 crystal |
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Black Crystal Drop Earrings $35 The black crystal drop earrings are the perfect finishing touch for your daytime and nighttime looks. The faceted rectangular black crystal is accented by round white crystals and gold-plate beads. The lever backs are for pierced ears. |
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Retro Accessories Candlestick No. 2 black $85 crystal |
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Black Cord Crystal Necklace $14 Pair the black cord crystal necklace with almostanything. A simple black cord is knotted to hold the three uniquependants into place. This necklace fastens with a lobster claw closure. |
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Black & Brown Crystal Stretch Bracelet $29.99 Black & Brown Crystal Stretch Bracelet Brand: VistaBella Size/Dimensions: Material: Crystal Stone: Crystal Stone: Crystal Gender: Female Age: Adult Condition: New |
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