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The Ray-Ban Wayfarer is a (mostly) plastic-framed design for sunglasses produced by the Ray-Ban company. Introduced in 1952, the trapezoidal lenses are wider at the top than the bottom (inspired by the Browline eyeglasses popular at the time), and were famously worn by James Dean , Roy Orbison , Elvis Presley , Bob Marley , The Beatles and ...
dollartree .com. Dollar Tree stores in the U.S., as of December 2020 [4] Dollar Tree, Inc. is an American multi-price-point chain of discount variety stores. Headquartered in Chesapeake, Virginia, it is a Fortune 500 (sometimes referred to as Fortune 200) company and operates 15,115 stores throughout the 48 contiguous U.S. states and Canada. [1]
From 85% to 90% of the UV produced by these lamps is at 253.7 nm, whereas only 5–10% is at 185 nm. The fused quartz tube passes the 253.7 nm radiation but blocks the 185 nm wavelength. Such tubes have two or three times the UV‑C power of a regular fluorescent lamp tube.
Sturgeon's law. The cover of the September 1957 issue of Venture Science Fiction, in which Sturgeon first published "90% of everything is crud." Sturgeon's law (or Sturgeon's revelation) is an adage stating "ninety percent of everything is crap". It was coined by Theodore Sturgeon, an American science fiction author and critic, and was inspired ...
Iodine-131 ( 131I, I-131) is an important radioisotope of iodine discovered by Glenn Seaborg and John Livingood in 1938 at the University of California, Berkeley. [1] It has a radioactive decay half-life of about eight days. It is associated with nuclear energy, medical diagnostic and treatment procedures, and natural gas production.
Raymond Kurzweil ( / ˈkɜːrzwaɪl /, KURZ-wyle; born February 12, 1948) is an American computer scientist, author, inventor, and futurist. He is involved in fields such as optical character recognition (OCR), text-to-speech synthesis, speech recognition technology and electronic keyboard instruments. He has written books on health technology ...
Website. www .raycountymo .com. Ray County is a county located in the northwestern portion of the U.S. state of Missouri and is part of the Kansas City metropolitan area. As of the 2020 census, the population was 23,158. [1] Its county seat is Richmond. [2] The county was organized November 16, 1820, and named for John Ray, a Missouri state ...
Skull radiography (X-ray) 0.015 1 Chest X-ray 0.013 1 Lumbar spine X-ray 0.44 30 Abdomen X-ray 0.46 35 Pelvis X-ray 0.48 35 Screening mammography (4 views) 0.2 15 Dental X-ray (intraoral) 0.013 1 Diagnostic fluoroscopy: barium swallow 1 70 Cardiac angiography 7 500 Head CT 2 150 Chest CT 10 750 Abdomen CT 10 750 Pelvis CT 7 500
Description. Knockoff Sharpie named "Skerple". A counterfeit consumer good is a good —often of inferior quality—made or sold under another's brand name without the brand owner's authorization. The term counterfeit, fraudulent, and suspect items (CFSI) is also used to describe such goods. [2]
Penetration depth. The penetration depth of X-rays in water as function of photon energy. Penetration depth is a measure of how deep light or any electromagnetic radiation can penetrate into a material. It is defined as the depth at which the intensity of the radiation inside the material falls to 1/ e (about 37%) of its original value at (or ...