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- From: mcghee@hpscit.sc.hp.com (Glenn McGhee)
- Date: Mon, 16 Nov 1992 17:57:21 GMT
- Subject: Re: Info about G Scale
- Message-ID: <63950007@hpscit.sc.hp.com>
- Organization: Hewlett-Packard, Santa Clara, CA
- Path: sparky!uunet!charon.amdahl.com!pacbell.com!ames!elroy.jpl.nasa.gov!sdd.hp.com!hpscit.sc.hp.com!scd.hp.com!hpscdm!hplextra!hpcc05!hpscit!mcghee
- Newsgroups: rec.models.railroad
- References: <1992Nov13.165125.17153@b30.ingr.com>
- Lines: 32
-
- In rec.models.railroad, wey@cbnewsb.cb.att.com (william.e.yoder) writes:
- .
- Stuff Deleted
- .
-
- > Brass track is one of the best conductors of electricity, but as
- > it oxidizes, the film that forms hampers the flow of electricity.
-
- According to the Handbook of Chemistry and Physics, aluminum is a much
- better conductor than brass. Brass has an resistance of 7.00 microhoms
- per centimeter whereas aluminum has 2.824 microhoms per centimeter. That
- shows aluminum has less that one-half the resistance of brass. I do not
- have numbers on nickel silver but here is a list other metels.
-
- METAL Microhoms per centimeter
-
- Silver 1.59 <----------------Best conductor
- Copper 1.771
- Gold 2.44
- Aluminum 2.824
- Brass 7.00
- Nickel 7.80
- Tin 11.5
- Steel 11.9
- Lead 22.00
- German silver 33.00 (18% Nickel)
-
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