The Alexandrite effect describes the phenomenon of light-induced colour changes in certain minerals. The effect was named after the alexandrite mineral...

of decorative glasses using rare earth colorants, with "Heliolit" and "Alexandrit" being the first two, introduced by Moser in 1929. Leo Moser's papers...

from the original on 2007-10-12. Retrieved 2007-07-09. Nordenskiöld N. Alexandrit oder Ural Chrysoberyll // Schriften der St.-Petersburg geschrifteten...

NATO class name "Dergach", is one of the few types of military surface effect ship built solely for marine combat purposes, rather than troop landing...

Olya-class Malakhit 1265 Minesweeper Alexandrit-class Yakhont 1266 12660 Minesweeper Gorya-class 1270 12700 Minesweeper Alexandrit-class 1274 Cable Ship/Minelayer...

potent Ottoman stronghold by the Black Sea, which was twice besieged without effect. During the French Revolutionary Wars, the Black Sea Fleet was initially...