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Polarized sunglasses use a sheet of polarizing material to block horizontally-polarized light and thus reduce glare in such situations. These are most effective with smooth surfaces where specular reflection (thus from light whose angle of incidence is the same as the angle of reflection defined by the angle observed from) is dominant, but even ...
Gamma-ray sensors are also used for measuring the fluid levels in water and oil industries. [17] Typically, these use Co-60 or Cs-137 isotopes as the radiation source. In the US, gamma ray detectors are beginning to be used as part of the Container Security Initiative (CSI). These machines are advertised to be able to scan 30 containers per hour.
A meridional ray or tangential ray is a ray that is confined to the plane containing the system's optical axis and the object point from which the ray originated. [4] A skew ray is a ray that does not propagate in a plane that contains both the object point and the optical axis. Such rays do not cross the optical axis anywhere and are not ...
Ray Douglas Bradbury (US: / ˈ b r æ d b ɛr i / BRAD-berr-ee; August 22, 1920 – June 5, 2012) was an American author and screenwriter.One of the most celebrated 20th-century American writers, he worked in a variety of genres, including fantasy, science fiction, horror, mystery, and realistic fiction.
Harold Ray Ragsdale (born January 24, 1939), [1] known professionally as Ray Stevens, is an American country [2] and pop singer-songwriter and comedian. [ 3 ] [ 4 ] He is best known for his Grammy -winning recordings " Everything Is Beautiful " and " Misty ", as well as novelty hits such as " Gitarzan " and " The Streak ".
The Treaty on the Prohibition of Nuclear Weapons (TPNW), or the Nuclear Weapon Ban Treaty, is the first legally binding international agreement to comprehensively prohibit nuclear weapons with the ultimate goal being their total elimination. It was adopted on 7 July 2017, opened for signature on 20 September 2017, and entered into force on 22 ...
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