Can someone explaing the supercool and shake method for triple point of water cells

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Request for Question Clarification by knowledge_seeker-ga on 05 Oct 2002 17:15 PDT

Hi overwatch, 

Did the comment below answer your question, or are you still looking
for further information?

-K~

When you cool a water cell below the triple point temperature, ice may
not form due to a lack of nucleation sites, leaving you with
supercooled liquid water (and vapor).  This is a non-equilibrium,
unstable state.  Shaking the water cell will sufficiently disturb this
unstable state to cause it to begin forming ice.  As the ice forms,
the liquid water will freeze or evaporate as necessary to adjust the
pressure in the cell.  When this process is complete, the cell will be
in equilibrium at the triple point of water (0.01 C @ 4.56 mm Hg).  It
will remain at the triple point until enough heat has been absorbed
from the environment to melt all the ice.