Dear Predrag,
Q: Which is heavier -- an ounce of gold or an ounce of lead?
A: An ounce of gold.
Q: Which is heavier -- a pound of gold or a pound of lead?
A: An pound of lead.
Explanation: 1 Gold is measured in Troy ounces (1 Troy ounce = 31.1035
grams) and lead is measured in Avoirdupois ounces (1 Avoirdupois ounce =
28.349�523�grams). So an ounce of gold is heavier than an ounce of lead.
2 There are 12 Troy ounces in a Troy pound (1 Troy
pound = 373.242 grams), but there are 16 Avoirdupois ounces in an
Avoirdupois pound (1 Avoirdupois pound = 453.592�37�grams). So a pound of
lead is heavier than a pound of gold.
And don't forget to differentiate between dry ounces, that measure mass, and
fluid ounces, that measure volume.
Cheers,
Pat Naughtin LCAMS
Geelong, Australia
Pat Naughtin is the editor of the free online newsletter, 'Metrication
matters'. You can subscribe by sending an email containing the words
subscribe Metrication matters to [EMAIL PROTECTED]
--
on 2004-03-12 17.36, Predrag Lezaic at [EMAIL PROTECTED] wrote:
> I have been using this site
> http://www.sciencemadesimple.net/EASYweight.html to convert grams
> -ounces etc but was surprised when I had a choice between troy or
> avoirdupois ounces. What the heck is this? Like one is not complicated
> enough. It turns out that products that I am importing from europe are
> using avoirdupois conversio.
>
> Thanks,
> Predrag
>
