Posted 09/15/2012 09:24 am
Here is a different approach, but I don't know it it is valid, because the crystalline structure of a .925 silver alloy measured by direct specific gravity means, may yield a slightly different density to the method of calculation given below:
Specific gravity of pure silver: 10.50
Specific gravity of pure copper: 8.93
weighted average of .925 silver alloy:
(10.50 x 925 + 8.93 x 75)
-------------------------------------- = 10.3825
1000
A Victorian .925 sixpence in uncirculated condition weighs 2.83 grammes.
The volume of a sixpence using the above weighted average density calculation is:
volume = mass divided by the density,
v = 2.83 divided by 10 .3825
v = 0.2725 cubic centimetres.
You can use this information to provide a check, at least, for your volume measurements.
Specific gravity of pure silver: 10.50
Specific gravity of pure copper: 8.93
weighted average of .925 silver alloy:
(10.50 x 925 + 8.93 x 75)
-------------------------------------- = 10.3825
1000
A Victorian .925 sixpence in uncirculated condition weighs 2.83 grammes.
The volume of a sixpence using the above weighted average density calculation is:
volume = mass divided by the density,
v = 2.83 divided by 10 .3825
v = 0.2725 cubic centimetres.
You can use this information to provide a check, at least, for your volume measurements.
Edited by sel_69l
09/15/2012 09:36 am
09/15/2012 09:36 am
