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May 26, 2011

Groovy!

srikanth @ 11:58 pm, GMT +0000 ( 1306454311 ) Play

Ed – 28May: Sorry folks, turns out this was a repeat of a question I had asked earlier (I was convinced I’d asked it in a live quiz and not BB, but I guess I was wrong. Oh well :( ). I’ll replace this with another question soon.

What invention?

Cracked by: badideabear , Urthstripe , Ananth , shrik , Rogi , Raghuvansh , shrey and dineshk

Answer:
SGI’s patent for a random number generator that was seeded by the state of a lava lamp. Most likely, many trees were smoked in the invention of this device :P

Points assigned by AutoRaja. Review by lazy humans pending.

8 Responses to “Groovy!”

  1. badideabear
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    Method for seeding a pseudo-random number generator with a cryptographic hash of a digitization of a chaotic system
    United States Patent 5732138

    They use lava lamps (fig 3) in this generation system.


  2. Urthstripe

    U.S. Patent 5,732,138, a method of imaging Lava Lamps to generate random numbers.

    Silicon Graphics and Sun Microsystems both used lava lamps to generate random numbers.


  3. Ananth
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    LavaRand – Seeding random number generators using images of lava lamps.


  4. shrik
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    Lavarand was Silicon Graphics’ name for its hardware random number generator that worked by taking pictures of the patterns made by the floating material in lava lamps, extracting random data from the pictures, and using the result to seed a pseudo-random number generator.

    (that’s odd – I could’ve sworn I’d seen this question earlier on here…)


  5. Rogi
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    I coulda sworn we had the Lava Lamp-based (psuedo)random number generator before.


  6. Raghuvansh
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    Lavarand. This is a repeated question. http://www.boiledbeans.net/2010/07/01/wooo-trippy/


  7. shrey

    Lavarand


  8. dineshk
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    Lavarand – generate random numbers by recording the swirling patterns of a lava lamp.


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