From: John Woodgate
Subject: Re: what is 100R mean in a schematics?
Date: Tue, 24 Dec 2002 21:20:52 +0000
Organization: JMWA Electronics Consultancy
Reply-To: John Woodgate
NNTP-Posting-Date: Tue, 24 Dec 2002 21:23:36 +0000 (UTC)
X-Newsreader: Turnpike (32) Version 4.01 <5Z8C9wtxbnpWyFnyfFzqmVF739>
I read in sci.electronics.design that Tom MacIntyre
wrote (in <83ih0v4mjg8evu78qjtvb9oko8vg8alk
firstname.lastname@example.org>) about 'what is 100R mean in a schematics?', on Tue, 24 Dec
>On Tue, 24 Dec 2002 19:31:07 +0000, John Woodgate
>>I read in sci.electronics.design that Alex Gibson
>>wrote (in ) about 'what is 100R mean in a
>>schematics?', on Wed, 25 Dec 2002:
>>>Things like torque conversions are the real PITA
>>>going from foot or inch pounds to newton metres.
>>You just have to make the effort to commit the conversion factor to
>>memory. With non-metric units, that's nothing unusual:
>>An Imperial pint of water weighs a pound and a quarter.
>20 ounces...beer is about the same also. We (Canada) have official 16
>ounce pints in the US system, and beer pints that are 12 ounces.
12 ounces? That's VERY short measure. Call in the Aylward! He's supposed
to stamp out such practices!
>>A cubic foot of water weighs 62.5 lb.
>I remember 62.4, but who cares? :-)
>>Five and a half yards is one rod, pole or perch.
>Never became familiar with those ones...fathom, chain, neither of
>those as well.
A fathom is 6 feet, a chain is 22 yards, the traditional length of a
cricket pitch. Because the rod is 5.5 yards, it's very close to 5
metres, so a cricket pitch is now 20 m long.
>>An acre is 4840 square yards; 220 yards by 22 yards.
>Here it's 208 feet by 208 feet...I think.
>>A mile is 63350 inches.
>5280 feet, 1760 yards...something less than 1760 metres...I guess
>it'll be 63350/39.37 metres? :-)
1600 m is near enough.
Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk
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