95 lines
3.8 KiB
Plaintext
95 lines
3.8 KiB
Plaintext
From fork-admin@xent.com Thu Oct 3 12:54:57 2002
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To: Digital Bearer Settlement List <dbs@philodox.com>, fork@spamassassin.taint.org
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From: "R. A. Hettinga" <rah@shipwright.com>
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Subject: Re: Optical analog computing?
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Date: Wed, 2 Oct 2002 16:25:26 -0400
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--- begin forwarded text
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Date: Thu, 03 Oct 2002 03:21:05 +1000
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To: "John S. Denker" <jsd@monmouth.com>
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From: Greg Rose <ggr@qualcomm.com>
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Subject: Re: Optical analog computing?
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Cc: "R. A. Hettinga" <rah@shipwright.com>,
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Digital Bearer Settlement List <dbs@philodox.com>,
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cryptography@wasabisystems.com
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At 01:30 AM 10/2/2002 -0400, John S. Denker wrote:
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>"R. A. Hettinga" wrote:
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>...
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> > "the first computer to crack enigma was optical"
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>1) Bletchley Park used optical sensors, which were (and
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>still are) the best way to read paper tape at high speed.
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>You can read about it in the standard accounts, e.g.
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> http://www.picotech.com/applications/colossus.html
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But Colossus was not for Enigma. The bombes used for Enigma were
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electro-mechanical. I'm not aware of any application of optical techniques
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to Enigma, unless they were done in the US and are still classified. And
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clearly, the first bulk breaks of Enigma were done by the bombes, so I
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guess it depends whether you count bombes as computers or not, whether this
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statement has any credibility at all.
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Greg.
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Williams/Zenon 2004 campaign page: http://www.ben4prez.org
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Greg Rose INTERNET: ggr@qualcomm.com
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Qualcomm Australia VOICE: +61-2-9817 4188 FAX: +61-2-9817 5199
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Level 3, 230 Victoria Road, http://people.qualcomm.com/ggr/
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Gladesville NSW 2111 232B EC8F 44C6 C853 D68F E107 E6BF CD2F 1081 A37C
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--- end forwarded text
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--
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-----------------
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R. A. Hettinga <mailto: rah@ibuc.com>
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The Internet Bearer Underwriting Corporation <http://www.ibuc.com/>
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44 Farquhar Street, Boston, MA 02131 USA
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"... however it may deserve respect for its usefulness and antiquity,
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[predicting the end of the world] has not been found agreeable to
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experience." -- Edward Gibbon, 'Decline and Fall of the Roman Empire'
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