In 1974, a handful of brave Soviet Jews haunted foreign embassies in Moscow hoping for exit visas. Refuseniks, they were called; the Brezhnev Government wouldn't let them out.

When a ternary azeotrope does exist, the curves intersect at the same point. The presence of a unitary azeotrope curve is not a prerequisite for the generation of a ternary azeotrope.

Chearful at morn he wakes from ſhort repoſe, / Breaſts the keen air, and carolls as he goes; […]

[Alice:] Dinah'll miss me very much to-night, I should think!