Archive for Science News

laser sharp random number generator

Posted in Books, pictures, Statistics, University life with tags , , , , , , , , on April 1, 2021 by xi'an

Caught the headline of Science News on a super-fast random number generator based on a dysfunctional laser! Producing “254 trillion random digits per second”.

“…when the laser is shined on a surface, its light contains a constantly changing pattern of tiny pinpricks that brighten and dim randomly. The brightness at each spot in the pattern over time can be translated by a computer into a random series of ones and zeros.”

I presume this is covered in the original Science paper [which I cannot access] but the parallel series of 0’s and 1’s should be checked to produce independent Bernoulli B(½) variates before being turned into a genuine random number generator.

on the Internet nobody knows you are an old dog

Posted in Books, Kids, pictures with tags , , , , , , on July 25, 2020 by xi'an