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Better-quality molded acrylic glasses frequently employ a compensating differential diopter power (a spherical correction) to balance the red filter focus shift relative to the cyan, which reduces the innate softness and diffraction of red filtered light. Low-power reading glasses worn along with the paper glasses also sharpen the image noticeably.
A shot glass is a glass originally designed to hold or measure spirits or liquor, which is either imbibed straight from the glass ("a shot") or poured into a cocktail ("a drink"). An alcoholic beverage served in a shot glass and typically consumed quickly, in one gulp, may also be known as a " shooter " or “shot”.
Non-impact protectors are those which do not pass all high-impact testing requirements and are therefore marked only with "Z87" (no "+" sign). The U.S. military standard requires (at a minimum) that ballistic eyewear can always withstand a 0.15 caliber, 5.8 grain, T37 shaped projectile at a velocity of 640 to 660 feet per second (approximately ...
The matte painting was then drawn to exactly match the proportion and perspective to the live action shot. The low cost and high quality of Dawn's matte shot made it the mainstay in special effects cinema throughout the century. [2] Dawn patented his invention on 11 June 1918 and sued for infringement of the patent three years later.
Branded Superfest glass. Superfest, also called CV-Glas [1] or Ceverit [2] until 1980, was a brand of drinking glasses in the GDR. Due to being made of chemically strengthened glass, they were notably strong. The Superfest glasses were produced between 1980 and 1990 in what was then state-owned Sachsenglas Schwepnitz. [2]
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