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The two plates (bonded together with a transparent adhesive) afford complete ballistic protection against 0.30 AP M2 projectiles at 0° obliquity with a muzzle velocity of 2,770 ft (840 m) per second. [63] Another transparent composite armor provided complete protection for small arms projectiles up to and including caliber .50 AP M2 ...
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Photons interact with an object by some combination of reflection, absorption and transmission. Some materials, such as plate glass and clean water, transmit much of the light that falls on them and reflect little of it; such materials are called optically transparent. Many liquids and aqueous solutions are highly transparent.
CNTs can also be used in addition to transparent conducting oxides (TCOs) in thin-film photovoltaic devices. Two TCOs which are often used are ZnO/Al and In 2 O 3 /Sn indium tin oxide (ITO). PV devices made with these TCOs attained energy-conversion efficiencies of 19.5% in CuIn 1−x Ga x Se 2-based solar cells and 16.5% in CdTe-based
A see-through display or transparent display is an electronic display that allows the user to see what is shown on the screen while still being able to see through it. The main applications of this type of display are in head-up displays , augmented reality systems, digital signage, and general large-scale spatial light modulation .
Felt paper is available in several grades, the most common being Type 1—commonly called 15-pound (15#) or No. 15 (#15)—and Type 2—commonly called 30-pound (30#) or No. 30 (#30). The weight designations originated with organic base felt weighing 15 or 30 pounds per 100 sq. ft. (6.8 kg or 14 kg per 9.3 m 2 ).
Overhead projector in operation, with a transparency being flashed. A transparency, also known variously as a viewfoil or foil (from the French word "feuille" or sheet), or viewgraph, is a thin sheet of transparent flexible material, typically polyester (historically cellulose acetate), onto which figures can be drawn.
() is the intensity of light remaining at distance x I 0 {\displaystyle I_{0}} is the initial intensity of light, at x = 0 {\displaystyle x=0} For a given medium at a given frequency, the opacity has a numerical value that may range between 0 and infinity, with units of length 2 /mass.