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- Sun Feb 07, 2010 8:55 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: The Einstein Cross Gravitational Lens (2010 Feb 07)
- Replies: 21
- Views: 5847
Re: APOD: The Einstein Cross Gravitational Lens (2010 Feb 07
What I find a bit interesting about this photograph is the apparent similarity between this image of an Einstein cross and a uniaxial interference figure, as seen in thin section between crossed polar filters. Of course, it is formed completely differently. The Einstein cross results from quadruple ...