Mercury And Dark Light

Mercury, $Hg$, $Z=80$, density $13.534\,gcm^{-3}$, molar mass $200.592\,gmol^{-1}$

$v_{boom}=3.4354*\cfrac{density}{Z}$

$v_{boom}=3.4354*\cfrac{13534}{80}=581.18$

and

$T_{boom}=v^2_{rms}*\cfrac{Molar\,mass}{3*8.3144}$

$T_{boom}=581.18^2*\cfrac{200.592*10^{-3}}{3*8.3144}=2716.37\,K$  or  $2443.22\,^oC$

also,

$T_{p}=v^2_{rms}*\cfrac{Molar\,mass}{2*8.3144}$

$T_{p}=581.18^2*\cfrac{200.592*10^{-3}}{2*8.3144}=4074.55\,K$  or  $3801.40\,^oC$

Other than,

$c+v_{boom}=c+581.18$

there's nothing new here.  How far back in time does a mere $581.18\,ms^{-1}$ send us?

It is possible to stir up $v_{boom}$ as in a vortex; since $v_{boom}$ is the target velocity, a cylindrical drum will work better.