... technology boom, powering advances in robotics, genomics, materials sciences and 3-D printing. As with previous technological breakthroughs, the full ...

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As a traveling Radiologic Technologist, you'll have plenty of job opportunities throughout the United States. These opportunities aren't limited to big cities ...

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20151121 — Image sensor size and diagram - posted in Electronically Assisted Astronomy (No Post-Processing): I am re-release the sensor size and ...

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CAUTION: IT IS EXTREMELY IMPORTANT THAT EVERYONE WEARS SAFETY GOGGLES WITH THIS DEMO. Be sure to have extra people to ensure everyone (including volunteers!) wears safety goggles and does not touch anything that has been melted.

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... Numerická apertura; de Numerische Apertur; en Numerical aperture; es Apertura numérica; fa روزنه عددی; fr Ouverture numérique; he מפתח נומרי; hu Numerikus ...

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So when evaluating lenses, consider both the focal length for your desired angle of view and perspective, as well as the maximum aperture f-number for its low- ...

Overview: A Fresnel lens can be looked at as many layers of lenses cut and stacked on top of each other. Creating a lens in this manner provides great collecting or great dispersion power. Lighthouses use Fresnel lenses to project light miles out into the ocean. In this demo, we turn that same lens around to collect and focus sun light into a spot that is so powerful that it will melt rocks. While Fresnel lenses can collect a lot of light in a compact lightweight package, they do not have very good resolution

LED Light Wiring Harness with Switch and Relay - Single Output ... OR series 7" LED Work Light projects a powerful beam with high speed visibility and maximum ...

Objectives: Learn more about a type of lens structure that can be lightweight, for its size, yet very powerful at the same time for the way it collects light.

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM157729.

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A Fresnel lens replaces a traditional curved lens by adding concentric grooves to the surface of the lens, as seen below left. These grooves act as individual refracting surfaces that turn a light source into parallel rays that can be seen for very long distances, as in the case of the lighthouse. In our demo we take the light in the opposite direction. We face those grooves toward the sun, and its incoming parallel rays, to concentrate the light down to a single point. Fresnel lenses are mostly used for light gathering power not for precision imaging.

specbos 1211UV-2 spectroradiometer can be equipped with accessories for measurements of all photobiological measurements, defined by IEC 62471/EN 62471.