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Pinhole glasses, also known as stenopeic glasses, are eyeglasses with a series of pinhole-sized perforations filling an opaque sheet of plastic in place of each lens. Similar to the workings of a pinhole camera , each perforation allows only a very narrow beam of light to enter the eye which reduces the size of the circle of confusion on the ...
In 2000, federal and state legislation was introduced that would require safety locks on firearms as well as ban the importation of high-capacity ammunition magazines. Though laws were passed that made it a crime to buy guns for criminals and minors, there was considerable controversy over legislation pertaining to background checks at gun shows.
Carrera was founded in 1956 in Austria by Wilhelm Anger as the sports eyewear maker Wilhelm Anger Werker inspired by the Carrera Panamericana auto race. [1]In 1964, Wilhelm Anger developed and patented the ‘Optyl’ material, which was a heat-hardened plastic weighing 20% less than acetate resulting in a reduction of allergic reactions and improved fit through a memory effect that provided ...
Samsung Electric Industries was established as an industrial part of Samsung Group on 13 January 1969 in Suwon, South Korea. [29] At the time, Samsung Group was known to the South Korean public as a trading company specialized in fertilizers and sweeteners.
The template for rimless eyeglasses date back to the 1820s, when an Austrian inventor named Johann Friedrich Voigtländer [] marketed a rimless monocle. The design as it is known today arose in the 1880s as a means to alleviate the combined weight of metal frames with heavy glass lenses.
X-ray art and fine art photography, artistic use of X-rays, for example the works by Stane Jagodič; X-ray hair removal, a method popular in the 1920s but now banned by the FDA. [140] Shoe-fitting fluoroscopes were popularized in the 1920s, banned in the US in the 1960s, in the UK in the 1970s, and later in continental Europe.
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