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- Xref: sparky alt.folklore.computers:16386 alt.folklore.urban:28974
- Newsgroups: alt.folklore.computers,alt.folklore.urban
- Path: sparky!uunet!charon.amdahl.com!pacbell.com!sgiblab!sdd.hp.com!decwrl!adobe!taft
- From: taft@adobe.com (Ed Taft)
- Subject: Re: HP Monitor models
- Message-ID: <1992Nov18.180256.25386@adobe.com>
- Sender: usenet@adobe.com (USENET NEWS)
- Organization: Adobe Systems Incorporated, Mountain View
- References: <1992Nov12.172127.25913@rz.uni-karlsruhe.de> <1992Nov13.023707.15767@news.columbia.edu> <13960@pogo.wv.tek.com>
- Date: Wed, 18 Nov 1992 18:02:56 GMT
- Lines: 25
-
- In article <13960@pogo.wv.tek.com> kevind@pogo.wv.tek.com (Kevin Draz) writes:
- >
- >Reminds me of the color monitor geometry & convergence calibration
- >procedures used for a Mac big-screen display company I once worked
- >for. The procedure began with "1. Face East" (referring to the
- >device). I was sure it was a joke, until it was explained to me that
- >when the shadow mask is parallel to the N-S magnetic field, it
- >provides the most central skew of adjustments point for an arbitrary
- >position of usage in the field.
- >
- >Reality is often stranger than fiction!
-
- Also more complicated. Many people think the earth's magnetic field is
- nice and regular and is aligned with the earth's axis. Not so. The
- north magnetic pole is somewhere in northern Canada, and the magnetic
- variation (angle between true and magnetic north) has a range of about
- 25 degrees just within the continental United States.
-
- I'm told there are some places on earth where the variation is greater
- than 90 degrees. That is, a magnetic compass indicates north as being
- in a southerly direction. This is true not only at the North Pole but
- in some other places (southeast Asia?) where the earth's magnetic field
- has weird bends in it.
- --
- Ed Taft taft@adobe.com ...decwrl!adobe!taft
-