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A deck prism, or bullseye, is a prism inserted into the deck of a ship to provide light down below. [1] [2] [3] For centuries, sailing ships used deck prisms to provide a safe source of natural sunlight to illuminate areas below decks. Before electricity, light below a vessel's deck was provided by candles, oil and kerosene lamps—all dangerous
A Pokémon TCG playmat with labels of various gameplay aspects, e.g. Active Spot, Bench, Deck, and Discard Pile. The Pokémon Trading Card Game is a strategy-based card game that is usually played on a designated playmat or digitally on an official game client where two players (assuming the role of Pokémon Trainer) use their Pokémon to battle one another.
A refractor card is a trading card that has a reflective coating and displays a rainbow when held at a specific angle. They are parallels of base set issues and were introduced with the release of the 1993 Topps "Baseball's Finest" set.
Optical glass refers to a quality of glass suitable for the manufacture of optical systems such as optical lenses, prisms or mirrors.Unlike window glass or crystal, whose formula is adapted to the desired aesthetic effect, optical glass contains additives designed to modify certain optical or mechanical properties of the glass: refractive index, dispersion, transmittance, thermal expansion and ...
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Glass is a wholly recyclable material. [2] Glass is beloved by architects as well as designers. Glass can play a role in accomplishing greater indoor environmental quality and when used carefully can improve energy efficiency, however a measured approach needs to be taken to ensure the building loads are not excessively increased due to solar gain.
The international glass code is based on U.S. military standard MIL-G-174, and is a six-digit number specifying the glass according to its refractive index n d at the Fraunhofer d- (or D 3-) line, 589.3 nm, and its Abbe number V d also taken at that line.
Download as PDF; Printable version; In other projects Wikidata item; Appearance. move to sidebar hide ... Plate glass (window glass) 1.52 [29] Crown glass (pure) 1.50 ...