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In October 2015, Footwear News recognized the Yeezy Boost 350 with its Shoe of the Year award. [58] In August 2016, GQ recognized Yeezy Boost 350 as the most influential shoe of the year. [2] On September 24, 2016, a second version of the shoe, known as Yeezy Boost 350 V2, debuted in a colorway called "Beluga". [59]
Uncoated glasses lens (top) versus lens with anti-reflective coating. The reflection from the coated lens is tinted because the coating works better at some wavelengths than others. An antireflective , antiglare or anti-reflection ( AR ) coating is a type of optical coating applied to the surface of lenses , other optical elements, and ...
The TWT is an elongated vacuum tube with an electron gun (a heated cathode that emits electrons) at one end.A voltage applied across the cathode and anode accelerates the electrons towards the far end of the tube, and an external magnetic field around the tube focuses the electrons into a beam.
Refraction of light at the interface between two media of different refractive indices, with n 2 > n 1.Since the velocity is lower in the second medium (v 2 < v 1), the angle of refraction θ 2 is less than the angle of incidence θ 1; that is, the ray in the higher-index medium is closer to the normal.
Beluga whale pods can be grouped into three categories, nurseries (which consist of mother and calves), bachelors (which consist of all males) and mixed groups. Mixed groups contain animals of both sexes. [63] [50] Many hundreds and even thousands of individuals can be present when the pods join in river estuaries during the summer. This can ...
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