[Swordmaker]

No it can't. Every time I put the speaker underwater it stops working - this proves that you can not use water to measure volume.,p> Nope, you have proved nothing. You have merely falsified the contention that all definitions of "Volume" can be measured by displacement... now let's see if we can determine how many volumes comprise the Encyclopedia Britannica by immersing a set in water.

[DevNet]

The answer I received after doing the experiment was Pie. Minced Meat pie to be exact.