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Identifying Materials Using Archimedes' Principle.

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DavidA:
Pete,

I am not implying that what you wrote is wrong. I am just having a bit of trouble getting my head around this particular description.  Please do not feel offended.
l
I actually do have a personal interest in this subject as one of my last tasks at my workplace was to make a device that allowed a sample to be suspended in liquid on a very sensitive digital balance.
I never saw how they were using it. but they still have it so it must have worked.

Dave.

DavidA:
Marv,

Even easier,  just measure the displacement (volume) of the whole thing and then dry weigh it.

Once you have the grams per cubic Centimetre (or whatever) refer to the tables.

Job done.

Dave.

mklotz:

--- Quote from: DavidA on January 27, 2015, 03:54:36 PM ---Even easier,  just measure the displacement (volume) of the whole thing and then dry weigh it.

--- End quote ---

Measuring the displacement accurately is not very easy.  Calculating the volume of a (simple) shape, accurately measured, can be done more precisely.

DavidA:
Agreed,

As I do have a balance that weighs to 0,1 gram and can get hold of some Sharpy test pieces (very precise metal blocks 55 X 10 X 10 Millimetre in different metals I am going to give this a try.

Dave.

RussellT:
As no one else has responded to your challenge Steve.  I think I can do it.  I think it would be easier to use a second tub which would fit inside the first rather than a balloon.

Russell

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