Terry Simpson wrote in USMA 22900:
Joseph B. Reid wrote:
I am not sure what you mean. I said that the ml is not an SI unit.
Are you saying that it is or it isn't?
I did not express an opinion; I merely quoted the metric bible.
Terry is right that the litre is not, strictly speaking, an SI unit.
With you so far...
However it is "accepted for use with the International System".
Still with you...
However, the litre is a metric unit.
Now this is where we diverge. I regard the terms 'metric' and 'SI' as
synonyms. This is because of phrases such as 'the International System
of Units, which is the modern form of the metric system'. Am I mistaken?
Thus I have treated 'accepted for use with the International System' as
identical in meaning to 'accepted for use with the metric system'.
--
Terry Simpson
The SI is the modern coherent sub-set of the metric system. Metric
units considered to not be part of SI include the are, hectare, bar,
�ngstr�m, barn, erg, dyne, poise, stokes, gauss, oersted, maxwell,
stilb, phot, gal, litre, tonne, neper, bel, curie, r�ntgen, rad, rem,
X unit, gamma, jansky, torr, calorie, and micron.
Joseph B. Reid
17 Glebe Road West
Toronto M5P 1C8 Telephone 416-486-6071
