Einstein cross

名词 n.

英文释义

名词 n.
  1. A gravitational lens configuration resulting in four duplicated images of the back ground image around the central gravitationally lensing object, in a cross configuration.

词形变化

Einstein crosses plural

词源

From Einstein (“Albert Einstein”) + cross. From the shape of a cross, of four points at roughly square angles around a central object, caused by distortions in the path of light's travel due to Einsteinian relativity (Albert Einstein's general relativity) creating four points out of a single light source behind the off-center central object. (An on-center central object results in an Einstein ring.).
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