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 ...
THE infra-red absorption spectrum of gaseous and liquid sulphur trioxide has been determined by us, in the laboratory for physical research at the Sor-bonne, in the region extending from 7μ to 14μ, ...
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