"Jim Wilkins" fired this volley in news:lbb7nt$1au$1
@dont-email.me:

Read the Wiki more carefully. The coin shown floating on mercury has a
density of 7.6g/cc, mercury's is 13.534.

Correct! That would make it something over a teaspoonful per contact.
Still a lot, but about half of what I wrote.

LLoyd