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by M Mateen · 2009 · Cited by 2 — Purchasing ready‐ made motorized linear stages can be very expensive, for instance a linear translation stage allowing 12 mm of travel in one direction with a ...

Oct 10, 2024 — What is Depth of Field? ... Depth of field is the distance between the closest and farthest objects in a photo that appears acceptably sharp. Now ...

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Using a Fresnel lens taken from an old rear-projection TV, Grant Thompson channelled the heat of the sun into a 1000 degree Celsius ray.

Now, Fresnel lenses are pretty powerful. We've already seen industrial designer Marcus Kayser use one to create a solar-powered 3D printer for sand.

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The resulting heat beam — which reaches around 2000 degrees Fahrenheit, or 1093 degrees Celsius — takes just seconds to boil water and melt metal.

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It allows both data and power to be transmitted through a single Ethernet cable between the NVR and security cameras, eliminating the need ...

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Got a taste for Fresnel lenses? Here's how you can get one of your very own from an old telly, and here's a video about how they work.

Anti glare glasses, or lenses treated with Anti glare coatings, also known as anti reflection, reflection free, AR or MAR coatings, were developed to reduce ...

A C-Mount adapter is a part that connects a camera to a microscope. One end is always 1.00-32 or 25.4mm threaded and another end is a male connector ( ...

by G Gliemeroth · 1982 · Cited by 21 — Abstract. In order to achieve the most exact image in an optical system, you have to consider the main properties of optical glass: refractive index, dispersion ...

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The advanced Olympus GX Series sets the highest standards for image clarity and resolution in inverted metallurgical microscopes.

Backyard tinkerer Grant Thompson is not a bully — but he does have a giant magnifying glass. More specifically, he has a Fresnel lens; that is, a giant lens made of corrugated concentric circles adapted from an old rear-projection TV.

by S Katzoff · 1971 · Cited by 11 — of the knife-edge test pattern from the normal. Some discussion has been included concerning application of the method to the testing of a large orbiting ...

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Using a Fresnel lens taken from an old rear-projection TV, Grant Thompson channelled the heat of the sun into a 1000 degree Celsius ray.

What we hadn't seen was someone use one to blow up a beer bottle, incinerate a piece of wood or melt a stack of coins. Probably because these are actually pretty dangerous things to be doing in your backyard, especially without protective goggles and with kids hanging around, but now that Thompson has done it anyway, it's fascinating to watch.

The idea of focusing the sun's rays into a concentrated beam of heat using a magnifying glass is so well known that all you have to do is say "ants under a magnifying glass" to conjure the image of a torturing bully.

Application of Microscope · Microscopes are used in examining the ailments by getting a larger view of the blood sample in detecting the parasites, bacterias ...