On Aug 7 , at 10:11 AM, James Frysinger wrote:
The symbol for hour is "h", not "H". In the SI, "H" is the symbol for
the henry and I am certain you do not mean milliampere henries. Thus
write:
300 mAh rechargeable lithium (non-removable)
While you're at it, Jim, wouldn't it be wise also to note that the
symbol of a product of two units (e.g., mA and h) should be separated
by a raised dot (or at least a space or a dot on the line, if the
raised dot is not available). Thus it should be:
mA·h
or alternatively either:
mA h
or
mA.h
See for example section 5.1 of the English language section of BIPM's
"The International System of Units (SI)".
(I will admit that the use of the dot-on-the-line is not sanctioned
there, so I may be in error on that point. I believe that the dot-on-
the-line alternative is specified somewhere but I can't find it.)
Regards,
Bill Hooper
Fernandina Beach, Florida, USA
PS
I printed the raised dot in mA·h by using option-shift-9 . (The option
key is the alternate, or alr, key on some computers.) This works for
me but may be different in different fonts and on different systems.
It may not even have come through to you correctly in this email.
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Make It Simple; Make It Metric!
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