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  2. X-ray fluorescence - Wikipedia

    en.wikipedia.org/wiki/X-ray_fluorescence

    X-ray fluorescence ( XRF) is the emission of characteristic "secondary" (or fluorescent) X-rays from a material that has been excited by being bombarded with high-energy X-rays or gamma rays. The phenomenon is widely used for elemental analysis and chemical analysis, particularly in the investigation of metals, glass, ceramics and building materials, and for research in geochemistry, forensic ...

  3. List of ray tracing software - Wikipedia

    en.wikipedia.org/wiki/List_of_ray_tracing_software

    Ray tracing is a technique that can generate near photo-realistic computer images. A wide range of free software and commercial software is available for producing these images.

  4. Ray Richmond - Wikipedia

    en.wikipedia.org/wiki/Ray_Richmond

    Ray Richmond. Ray Richmond (born October 19, 1957, in Whittier, California) [1] is a globally syndicated critic and entertainment/media columnist. Richmond has also worked variously as a feature and entertainment writer, beat reporter and TV critic for a variety of publications including the Los Angeles Daily News, Daily Variety, the Orange ...

  5. Ray Tomlinson - Wikipedia

    en.wikipedia.org/wiki/Ray_Tomlinson

    Tomlinson was born [13] in Amsterdam, New York, but his family soon moved to the small, unincorporated village of Vail Mills, Broadalbin, New York. [14] [15] His father Raymond Tomlinson worked in carpet mills and later worked in the grocery business. His mother Dorothy Tomlinson worked for a dry cleaner. [16] He attended Broadalbin Central School in nearby Broadalbin, New York. [17] Later he ...

  6. Treaty on the Prohibition of Nuclear Weapons - Wikipedia

    en.wikipedia.org/wiki/Treaty_on_the_Prohibition...

    Nuclear Weapon Ban Treaty. 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 ...

  7. Cownose ray - Wikipedia

    en.wikipedia.org/wiki/Cownose_ray

    The cownose ray ( Rhinoptera bonasus) is a species of Batoidea found throughout a large part of the western Atlantic and Caribbean, from New England to southern Brazil (the East Atlantic populations are now generally considered a separate species, the Lusitanian cownose ray ( R. marginata )). [2] These rays also belong to the order ...

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