[NewCandle] NR attempt at Fred's battery anti-lifter

[Horace Heffner]

On Aug 13, 2007, at 12:29 PM, Nick Reiter wrote:


>
> Back in the day, I had done some experiments with Sam
> Faile that involved me weighing all individual
> components in an isolated fashion, then putting them
> together in the final "cluster" or arrangement.
> Sometimes the sum of the parts was more or less than
> the aggregate.

If dissolving things (or a chemical reaction is involved resulting in  
a solute, like copper chloride) is part of that process then the  
scale weight is likely to change.  The volume of a solvent and solute  
is often less after solvation than before, but the mass is the same,  
and the density increases.  What changes is the total air displaced,  
so the resulting solution appears to have "lost weight". The amount  
of lost weight can then hopefully be accounted for by measuring the  
before and after volumes and then multiplying the lost volume by the  
density of air to obtain the loss of buoyant mass.


Horace Heffner
http://www.mtaonline.net/~hheffner/