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Camera lucida. A camera lucida is an optical device used as a drawing aid by artists and microscopists . The camera lucida projects an optical superimposition of the subject being viewed, onto the surface upon which the artist is drawing. The artist sees both scene and drawing surface simultaneously, as in a photographic double exposure.
The contacts are placed into a special container with a platinum-coated disk, which reacts with the hydrogen peroxide. This “redox” reaction (reduction and oxidation) produces small bubbles that help to clean the contacts. After 6-8 hours, the hydrogen peroxide becomes an eye-safe saline solution. [4] At this point, it is safe to use the ...
Self-cleaning glass. Self-cleaning glass is a specific type of glass with a surface that keeps itself free of dirt and grime. The field of self-cleaning coatings on glass is divided into two categories: hydrophobic and hydrophilic. These two types of coating both clean themselves through the action of water, the former by rolling droplets and ...
The larger front lenses in the 8×40 also produce wider beams of light (exit pupil) that leave the eyepieces. This makes it more comfortable to view with an 8×40 than an 8×25. A pair of 10×50 binoculars is better than a pair of 8×40 binoculars for magnification, sharpness and luminous flux. Objective diameter is usually expressed in ...
The Advanced Space Vision System (also known as the Space Vision System or SVS) is a computer vision system designed primarily for International Space Station (ISS) assembly. [1] The system uses regular 2D cameras in the Space Shuttle bay, on the Canadarm, or on the ISS along with cooperative targets to calculate the 3D position of an object.
A power washer used to clean the surface of the EA-6B Prowler at Naval Air Station Whidbey Island. A pressure washer is a high pressure mechanical sprayer that can be used to remove loose paint, mold, grime, dust, mud, and dirt from surfaces and objects such as buildings, vehicles, and concrete road surfaces.
Weight. 46.2 ounces (1,310 g) Made in. Japan. The Pentax 645 is a medium format single-lens reflex system camera manufactured by Pentax. It was introduced in 1984, along with a complementary line of lenses. It captures images nominally 6 cm × 4.5 cm on 120, 220, and 70 mm film, though the actual size of the images is 56 mm × 41.5 mm.
The LOMO LC-A (Lomo Kompakt Automat) is a fixed lens, 35 mm film, leaf shutter, zone focus, and compact camera introduced in 1984. Its design is based on the Cosina CX-2, with the difference being that it lacks a swiveling front and self-timer. [ 1] It was built in Soviet -era Leningrad by Leningrad Optics and Mechanics Association (LOMO). [ 2]