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Walmart Neighborhood Market, sometimes branded as "Neighborhood Market by Walmart" or informally known as "Neighborhood Walmart", [150] is Walmart's chain of supermarkets ranging from 28,000 to 65,000 square feet (2,600 to 6,000 square meters) and averaging about 42,000 square feet (3,900 square meters), about a fifth of the size of a Walmart ...
8×42 roof prism binoculars with rainguard and opened tethered lens caps. Binoculars or field glasses are two refracting telescopes mounted side-by-side and aligned to point in the same direction, allowing the viewer to use both eyes (binocular vision) when viewing distant objects.
Uses an equiconvex crown glass lens (i.e. R 1 > 0 with −R 1 = R 2) and a complementary-curved second flint glass lens (with R 3 = R 2). The back of the flint glass lens is flat ( R 4 = ∞). A Littrow doublet can produce a ghost image between R 2 and R 3 because the lens surfaces of the two lenses have the same radii.
A burning apparatus consisting of two biconvex lens. A lens is a transmissive optical device that focuses or disperses a light beam by means of refraction.A simple lens consists of a single piece of transparent material, while a compound lens consists of several simple lenses (elements), usually arranged along a common axis.
Dielectric phase-correction prism coatings are applied in a vacuum chamber with maybe 30 different superimposed vapor coating layers deposits, making it a complex production process. In a roof prism without a phase-correcting coating, s-polarized and p-polarized light each acquire a different geometric phase as they pass through the upper prism.
PRISM is a code name for a program under which the ... found that the disclosure of PRISM could cost the U.S. economy between $21.5 and $35 billion in lost ...
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