[texhax] Units in technical writing

Philip TAYLOR P.Taylor at Rhul.Ac.Uk
Thu Dec 29 21:36:13 CET 2011

Johnny wrote:

> As all is based on the work by BIPM who also publish guidelines
> available online, this is worth mentioning. I believe most of the
> information, if not all, is available and identical (after working with
> these for years I see them as equivalent).
> URL:http://www.bipm.org/en/si/

Read with great interest, Johhny, but this one worries me :

> ampere 	 A
>     The ampere is that constant current which, if maintained in two straight parallel conductors of infinite length, of negligible circular cross-section, and placed 1 m apart in vacuum, would produce between these conductors a force equal to 2 x 10–7 newton per metre of length.

At this point, the Newton has not been defined ...
Philip Taylor

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