From: Andy Little (andy_at_[hidden])
Date: 2006-06-08 12:09:50
"Martin Bonner" wrote
> Paul Giaccone Sent:
>
>> Martin Bonner wrote:
>>> Paul Giaccone Sent:
>>>
>>>
>>>> Centi-, deci-, deca- and hecto- are not officially part of SI
>>>> nomenclature.
>>>>
>>>
>>> That's not what the Bureau Internatoinal des Poids et Mesures
>>> (http://www.bipm.org/en/si/si_brochure/chapter3/prefixes.html) says.
>>>
>>>
>> Interesting... I stand corrected. But are they in official scientific
>> use?
>>>> Does the second officially take any prefix? Can you talk about a
>>>> "megasecond",
>>>>
>>> Yes. (Although it is EXTREMELY unusual).
>>>
>> Quoting your source back at you, Martin... according to the section at
>> the bottom of the page, you can't officially say "megasecond".
>>
>> Paul
> Are you refering to the text:
> "Prefix names and symbols are [...] never used with the units of time:
> minute, min; hour, h; day, d."
That is because They arent SI units, but second is so its OK.
regards
Andy Little