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  2. Grager - Wikipedia

    en.wikipedia.org/wiki/Grager

    Grager. A grager (Yiddish: גראַגער, 'rattler'), also gragger, grogger or gregger, [1] is a noisemaking device, most commonly a ratchet, used to make noise by the congregation when the name of Haman is read out during the recitation of the Megillah in the synagogue during the celebration of Purim in order to blot out Haman's name.

  3. Hardware random number generator - Wikipedia

    en.wikipedia.org/wiki/Hardware_random_number...

    A USB-pluggable hardware true random number generator. In computing, a hardware random number generator (HRNG), true random number generator (TRNG), non-deterministic random bit generator (NRBG), [1] or physical random number generator [2] [3] is a device that generates random numbers from a physical process capable of producing entropy (in other words, the device always has access to a ...

  4. Groan tube - Wikipedia

    en.wikipedia.org/wiki/Groan_Tube

    A groan tube is a toy that when turned on one end, makes a distinct "groan" sound. This is due to a noise maker in the tube that vibrates in the air as it falls, making the noise. [1] The groan tube was invented in the early 1960s by Japanese toy manufacturer Kureo. [2] [unreliable source?] The toy was first sold as 'Magic Noise Tube ...

  5. Noisemaker - Wikipedia

    en.wikipedia.org/wiki/Noisemaker

    A noisemaker is something intended to make a loud noise, usually for fun. Instruments or devices commonly considered "noisemakers" include: pea whistles. air horns, composed of a pressurized air source coupled to a horn, designed to create an extremely loud noise. fireworks, such as firecrackers, bottle rockets, bang snaps and others.

  6. Noise generator - Wikipedia

    en.wikipedia.org/wiki/Noise_generator

    Noise generator. Zener diode based noise source. A noise generator is a circuit that produces electrical noise (i.e., a random signal). Noise generators are used to test signals for measuring noise figure, frequency response, and other parameters. Noise generators are also used for generating random numbers.

  7. Ratchet (instrument) - Wikipedia

    en.wikipedia.org/wiki/Ratchet_(instrument)

    A ratchet or rattle, more specifically, cog rattle[1] is a musical instrument of the percussion family and a warning/signaling device. It operates on the principle of the ratchet device, using a gearwheel and a stiff board mounted on a handle, which rotates freely. Variants include the gragger (Yiddish: גראַגער) used in Judaism, the ...

  8. AOL Mail

    mail.aol.com

    Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

  9. Patatap - Wikipedia

    en.wikipedia.org/wiki/Patatap

    Developer (s) Jono Brandel. Initial release. March 25, 2014; 10 years ago (2014-03-25) Platform. Browser, iOS. Website. patatap.com. Patatap is a visual sound kit application with animations by computer programmer Jono Brandel and Japanese electronic duo Lullatone, consisting of Shawn James Seymour and Yoshimi Tomida.

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