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Braun was the only foreign licensee of the QUAD electrostatic loudspeaker for a time. In 1954, the company also began producing film slide projectors, a mainstay of its business for the next forty years. By 1956, the company was marketing the first fully automatic tray film slide projector known as the PA 1. [nb 1] [7]
Cut glass wine glass made of lead glass. Lead glass, commonly called crystal, is a variety of glass in which lead replaces the calcium content of a typical potash glass. [1] Lead glass contains typically 18–40% (by mass) lead(II) oxide (PbO), while modern lead crystal, historically also known as flint glass due to the original silica source, contains a minimum of 24% PbO. [2]
The glass walls of the lamp prevent the emission of the UV photons because ordinary glass blocks UV radiation at the 253.7 nm and shorter wavelengths. In the internal core form (see diagram), a glass tube (B) protrudes bulb-ward from the bottom of the discharge vessel (A), forming a re-entrant cavity.
Uranium (0.1 to 2%) can be added to give glass a fluorescent yellow or green color. [8] Uranium glass is typically not radioactive enough to be dangerous, but if ground into a powder, such as by polishing with sandpaper, and inhaled, it can be carcinogenic. When used with lead glass with very high proportion of lead, produces a deep red color.
A top most number as 1 indicates a high beam lamp and a 2 indicates a low or twin beam lamp. Only 5.75' lamps were high or low beam, whereas 7' lamps were twin beam lamp with the 2 on the top most edge of the headlight. About 1967, American Motors Corporation had Tung-Sol headlights on all their passengers vehicles up to October 1974 data.
Cola Change Up? The food court might be one of the most beloved parts of a Costco trip. From the $1.50 hot dog combo to the whole pepperoni pizzas, the food is fresh, hot, and inexpensive.
The suffix after the G indicates the pin spread; the G dates to the use of Glass for the original bulbs. GU usually also indicates that the lamp provides a mechanism for physical support by the luminaire: in some cases, each pin has a short section of larger diameter at the end (sometimes described as a "peg" rather than a "pin" [2]); the socket allows the bulb to lock into place by twisting ...
Game 4: No. 8 Ohio State vs. No. 9 Tennessee, 8 p.m. (ABC/ESPN) CFP quarterfinals schedule The four quarterfinal games will be played on New Year's weekend, with one game on Dec. 31 and three on ...
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