Terry Simpson wrote in USMA 22858
Incidentally, I just realised that a 'cc' is identical to a ml. I must have known this from all my experiences with cars and motorbikes. I have only just become conscious of it.
I was instinctively reacting to the way it was written because 'cc' is not at all SI notation and I frequently see '568 ml' as an expression. However 'cubic cm' or 'cm3' would be fine. In fact, it would be excellent since ml is not an SI unit whereas cm3 is.
Terry's impression would have been correct from 1901 until 1964.
The 3rd Conf�rence G�n�rale des Poids et Mesures in 1903
declared
"The unit of volume, for high accuracy determinations, is
the volume occupied by a mass of 1 kilogram of pure water, at its
maximum density and at standard atmospheric pressure: this volume is
called 'litre'."
The litre was redefined as 1 dm3 by the 12th CGPM in 1964, which
recommended that the name should not be employed to give the results
of high-accuracy volume measurements (presumably to avoid confusion
between the value of the litre from 1901 to 1960 and the present
value).
The litre is a "Non-SI unit accepted for use with the
International System"
Joseph B. Reid
17 Glebe Road West
17 Glebe Road West
Toronto M5P 1C8
Telephone 416-486-6071.
