광학【光學】
оптика
光學적 оптический
光學기계(기구) оптический прибор
光學유리 оптическое стекло
광학성【光學性】
оптическое свойство
광학자【光學者】
оптик
"Everything that is beautiful and noble is the product of reason and calculation." Charles Baudelaire
"The best way to keep your friends is not to give them away." Wilson Mizner
"Silence is the mother of truth." Benjamin Disraeli
"Never forget the three powerful resources you always have available to you: love, prayer, and forgiveness." H. Jackson Brown, Jr.