Re: Units... Re: Awesome Quarter Shrinking Capacitors on EBAY

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: Finn Hammer <f-h-at-c.dk> 



Tesla list wrote:
>Original poster: "Jim Lux" <jimlux-at-earthlink-dot-net>
snip

>here's an interesting question.. when you buy magnet wire in Europe, is it
>sold by mm diameter, micron diameter, square mm cross section (which is the
>case for larger diameter wires), or "gauge" (like American Wire Gauge)..


We buy it by the millimetre, in 1/100th mm steps.
In the engineering world, everything is measured in millimeters, even if it 
is several meters long.

>And, there are also oddities in terms of types of materials... For instance,
>bolt strengths... Grade 2, Grade 5, Grade 8, for instance... Presumably
>there's some equivalent DIN or BS or IS or AS? I can't imagine whipping on
>down to the local Ferreteria in rural Spain and looking for 50 GPa bolts...
>Some traditions stay, some go.. Metric originated in the time of the French
>Revolution... we kept the length and mass units, but abandoned the metric
>clock and calendar..I guess a system originating in ancient Babylon just had
>too much inertia.
>
>----- Original Message -----
>From: "Tesla list" <tesla-at-pupman-dot-com>
>To: <tesla-at-pupman-dot-com>
>Sent: Saturday, October 11, 2003 1:33 PM
>Subject: Re: Awesome Quarter Shrinking Capacitors on EBAY
>