Notes on LEDs. LED Parts LEDs come in all shapes and sizes, but the 3mm T-1 or 5mm T-1¾ are probably the most common.
The die is an itty bitty cube of semiconductor, the composition of which determines the color of the light given off. It sits in the bottom of the die cup, which has reflective sides to reflect the light emitted by the die toward the dome end of the LED. The epoxy body is shaped to act as an inclusion lens and focus the light into a beam.
The distance from the die cup to the domed end of the lens determines how tightly focused is the resulting beam of light. LED Color Visible LEDs LED colors are often given in "nm", or nanometers, which is the wavelength of the light. Notice the temperature given in the upper right corner of the graph - LEDs emit slightly different colors at different temperatures. Infrared LEDs The infrared band can be divided into Near Infrared (NIR) and Far Infrared (IR). Infrared LEDs are sometimes called IREDs (Infra Red Emitting Diodes). Ultraviolet LEDs White LEDs.
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Presentations. Hydrogeology. Typical aquifer cross-section Introduction Hydrogeology is an interdisciplinary subject; it can be difficult to account fully for the chemical, physical, biological and even legal interactions between soil, water, nature and society.
The study of the interaction between groundwater movement and geology can be quite complex. Third-World Wind Power: First Look. 37 Out-of-this-World Photos: Earth from Above. Aurora Australis and Daybreak.
The Aurora Australis, seen at right on Earth’s horizon, and daybreak (left) highlight this ‘busy’ photograph taken by one of the Expedition 30 crew members aboard the International Space Station. Photo #1 by NASA The Soil Moisture and Ocean Salinity (SMOS) mission makes global observations of soil moisture over Earth’s landmasses and salinity over the oceans. The Universe Magnified. This is one of the most beautiful infographics we've ever seen: a high resolution view of different levels of the universe.
Our favorite parts are the jaw-dropping nebulae and then the point where you see the size of Pluto compared to Texas. Puts things into perspective. Grome. Grome is an environmental modeling package developed by Quad Software dedicated for procedural and manual generation of large virtual outdoor worlds suitable for games and other 3D real-time simulation applications.
History After more than two years of internal developing, the program was first launched on March 28, 2007 as version 1.0. It immediately started to be used by various professional game studios and independent developers. Version 1.1 was launched on August 22, 2007 adding various optimizations, pen tablet support and more flexibility by introducing user defined data sets. Following this was version 1.2 on March 12, 2008 which optimized existing fractal tools and added new ones, extended import and export with new data formats and introduced the Grome scripting language for automated tasks. Major release, 2.0, was introduced on June 18, 2009 with many new additions. Main Features General Easy to use user interface, with shortcuts available for every operation. TOPOG Online. Aprenda Codigo Morse vendo e ouvindo..wmv. Grande sertão paulista. Traffic.outbrain. While the U.S. auto industry reels, Gizmag reports that Nissan will actually be producing a commercial-use version of the NV200 concept we showed you last year.
Just how many of the NV200's innovative features will be incorporated in the production version is not known just yet but the press release hints that it will include Nissan's sliding cargo pod. Honest Logos by Victor Hertz. Victor Hertz just recently had a great success with his clever Pictogram Movie Posters.
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It sounds like something out of science fiction, but it’s all too real, notes Allen Baler of Food4Patriots, a long-term survival food solution.
Monsanto, the company behind the herbicide Roundup, has created genetically modified seeds that can produce completely sterile crops. The company owns the patent to the gene, dubbed the Terminator gene, but so far hasn’t released any seeds that feature it, according to NPR. But, the fact that the company could unleash seeds with the Terminator gene is something people should be concerned about, according to Baler. Part of the joy of gardening or farming is being able to save seeds from one year’s crop to plant the next year. Sterile seeds would do away with that. Monsanto’s Grip on the Seed Industry The chemical company Monsanto was one of the first companies to develop light emitting diodes (LEDs). Tijol-Eco Artigos Solo-Cimento. Explained lighting schemes. Maurice Mc Duff Studio McMomo , from the canadian photographers association QuebecPhotos , have prepared a set of photos with different lighting schemes, along an explanation and visual schematics for each one of them, explaining how he did them.
An excellent opportunity to learn about new lighting schemes and to see how each detail in the scheme its later reflected in the final photo. 1. Two superposed softboxes on the left. Value F8 @ ISO 100 2. One light with a diffuser to cut the subject shadow on the background 3. Basic Electronics Tutorials and Revision. Online references. Cyclopaedia.net. IBGE · PAÍSES@ First Upload. Some of you might have seen it before.
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Printable Paper. Outdoor Survival. Instructables has one of the best collections of survival how-to's on the web. There are enough outdoor survival Instructables to take someone from novice to survivor with nothing more than a laptop and a can do attitude. There are so many good Instructables on this topic and this is just a small sample to get you started.
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