On Jan 1, 8:23 pm, Joe > wrote:
> Read all about it, athttp://muvy.org

Google "diamond anvil cell." Most basic form has two
gem quality diamonds set into two opposing levers,
with pressure applied by a fine pitched handscrew.
Diamond is not only hard enough resist extreme pressure,
it is also clear, allowing phase transitions to be observed
by eye or by microscope.

Pressures attained approach those at Jupiter's core.

Did the researchers use creamy or superchunk pb?