Einstein's constant

Etymology
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Proper noun

 * 1)  The coupling constant appearing in the Einstein field equation.

Translations

 * Chinese:
 * Mandarin: 愛因斯坦常數
 * French: constante d'Einstein
 * Georgian: აინშტაინის მუდმივა
 * German: Einsteinkonstante
 * Japanese: アインシュタイン定数
 * Romanian: constanta lui Einstein
 * Russian: постоя́нная Эйнште́йна