Beading effects in different noble gasses.
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Helium link    Neon link    Argon link
Beads in Helium (none)                            Beads in Neon                               Beads in Argon      
 

Krypton link    Xenon link    Argon link
           Beads in Krypton                             Beads in Xenon               Beads in Argon / Mercury (poor)