WE experimented with the absorption spectrum of gaseous mercuric sulphide. The substance was introduced into a quartz absoiption tube which could be heated to about 400° C. by electrical means, steps ...
Infrared spectra of the four-coordinated quartz and coesite polymorphs of SiO$_{2}$, the rutile six-coordinated (stishovite) polymorph of SiO$_{2}$, and the quartz and rutile polymorphs of GeO$_{2}$ ...