From mboxrd@z Thu Jan 1 00:00:00 1970 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on polar.synack.me X-Spam-Level: X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00,FREEMAIL_FROM autolearn=ham autolearn_force=no version=3.4.4 X-Google-Thread: 103376,6609c40f81b32989 X-Google-NewGroupId: yes X-Google-Thread: 1094ba,9bdec20bcc7f3687 X-Google-NewGroupId: yes X-Google-Attributes: gida07f3367d7,gid8d3408f8c3,domainid0,public,usenet X-Google-Language: ENGLISH,ASCII-7-bit Path: g2news2.google.com!news4.google.com!proxad.net!feeder1-2.proxad.net!newsfeed.straub-nv.de!news.musoftware.de!wum.musoftware.de!fu-berlin.de!uni-berlin.de!individual.net!not-for-mail From: Dick Hendrickson Newsgroups: comp.lang.ada,comp.lang.fortran,comp.lang.pl1 Subject: Re: Why is Ada considered "too specialized" for scientific use Date: Fri, 23 Apr 2010 19:23:54 -0500 Message-ID: <83es0sF40iU1@mid.individual.net> References: <4bb9c72c$0$6990$9b4e6d93@newsspool4.arcor-online.net> <4bba8bf1$0$56418$c30e37c6@exi-reader.telstra.net> <4bbb2246$8$fuzhry+tra$mr2ice@news.patriot.net> <4bbb5386$0$56422$c30e37c6@exi-reader.telstra.net> <4bbdf5c6$1$fuzhry+tra$mr2ice@news.patriot.net> <4bc5a413$0$78577$c30e37c6@exi-reader.telstra.net> <4bc6e42f$2$fuzhry+tra$mr2ice@news.patriot.net> <4bd19a2b$0$895$c30e37c6@exi-reader.telstra.net> <4bd22c67$0$14121$703f8584@textnews.kpn.nl> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Trace: individual.net RoUuWpS83h5WR7lAlhE0uQVL48IgTirz9+uTBR2HXWDZhD1/Ix Cancel-Lock: sha1:h25rTlIY9CDxtt3NmRA8Op66lGM= User-Agent: Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.6; en-US; rv:1.9.1.9) Gecko/20100317 Thunderbird/3.0.4 In-Reply-To: <4bd22c67$0$14121$703f8584@textnews.kpn.nl> Xref: g2news2.google.com comp.lang.ada:11152 comp.lang.fortran:24973 comp.lang.pl1:1287 Date: 2010-04-23T19:23:54-05:00 List-Id: On 4/23/10 6:25 PM, Sjouke Burry wrote: > Peter Flass wrote: >> J. Clarke wrote: >>>> 4. Random number generation. >>> How were random numbers generated before computers? Did they not have >>> viable algorithms for the purpose? >> >> I think the "Chem Rubber Bible" has a table of random numbers you can >> use; just pick a spot to start. OTOH, that begs the question of how >> they were generated in the first place. I have visions of a roomful of >> people flipping coins. > > Just take any bad quality resistor, zenerdiode, or a number > of other electronic components, amplify the noise, and use it > with a bit of hardware to produce an endless stream of random numbers. > No computers needed. You don't even need to find a "bad quality" one. Shot noise is a result of the finiteness of the charge on an electron, not the electrons quality. Dick Hendrickson