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  2. Laser scanning - Wikipedia

    en.wikipedia.org/wiki/Laser_scanning

    Laser scanning is the controlled deflection of laser beams, visible or invisible. [1] Scanned laser beams are used in some 3-D printers, in rapid prototyping, in machines for material processing, in laser engraving machines, in ophthalmological laser systems for the treatment of presbyopia, in confocal microscopy, in laser printers, in laser shows, in Laser TV, and in barcode scanners.

  3. COVID-19 pandemic in Indonesia - Wikipedia

    en.wikipedia.org/wiki/COVID-19_pandemic_in_Indonesia

    The COVID-19 pandemic in Indonesia is part of the worldwide pandemic of coronavirus disease 2019 (COVID-19) caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2).

  4. Snapchat - Wikipedia

    en.wikipedia.org/wiki/Snapchat

    Snapchat is an American multimedia instant messaging app and service developed by Snap Inc., originally Snapchat Inc.One of the principal features of the multimedia Snapchat is that pictures and messages are usually available for only a short time before they become inaccessible to their recipients.

  5. Sound effect - Wikipedia

    en.wikipedia.org/wiki/Sound_effect

    A live rooster in the Yle recording studio in 1930s Finland. The term sound effect dates back to the early days of radio. In its Year Book 1931 the BBC published a major article about "The Use of Sound Effects".