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- Path: sparky!uunet!portal!cup.portal.com!thad
- From: thad@cup.portal.com (Thad P Floryan)
- Newsgroups: comp.sys.amiga.hardware
- Subject: Re: Parity
- Message-ID: <69474@cup.portal.com>
- Date: Fri, 13 Nov 92 19:23:56 PST
- Organization: The Portal System (TM)
- References: <erd.04mw@kumiss.cmhnet.org>
- Lines: 38
-
- In article <erd.04mw@kumiss.cmhnet.org> erd@kumiss.cmhnet.org (Ethan Dicks)
- writes:
-
- | EDC (Error Detection and Correction) is also known as ECC (why, I don't
- | know). [...]
-
- "ECC" == "Error Correction and Control."
-
- | [...]
- | As for stray Alpha particles causing bit errors... Early 64K DRAMs
- | manufactured by Intel suffered from numerous single bit errors. The
- | source turned out to be radioactive isotopes in the ceramic substrate.
- | Intel decided that the cells would have to be more robust since the
- | level of radioactivity could not be altered. [...]
-
- The "problem" is more insidious. All "fired" ceramics, fireplace bricks,
- coffee mugs, jewelry, etc. emit low-level radioactivity. If you have a brick
- fireplace and sit on the bricks, you'll acquire more radiation than if you
- lived in Denver; if you live in Denver (1 mile high) AND sit on fireplace
- bricks, your butt is gonna get toasted! :-) :-)
-
- Actually, life NEEDS "some" radiation to survive. I recall a report written
- in (perhaps) Scientic American decades ago about research performed on a
- mountaintop in Switzerland. In a controlled experiment, a control group of
- plants was shieled from background radiation, and the subject group of plants
- was left exposed (to the background radiation); the control group died (for
- lack of ANY radiation).
-
- The situation is different with High Voltage power lines. Was just reading
- a report today from the EPRI (Electric Power Research Institute (Palo Alto,
- CA)) re: the conference in San Diego this week. Seems the 15-year tests
- performed by the Swedish and Danish show a clear link between leukemia and
- residence near high voltage power lines.
-
- There is also an excellent summary on page 2 of today's San Francisco
- Chronicle by David Perlman (Chronicle Science Editor) on this same subject.
-
- Thad Floryan [ thad@btr.com, thad@cup.portal.com ]
-