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Dr. Anomaly

"Neat" Pictures

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2 hours ago, Cygnia said:

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Believe it or not, the curved bright areas on the water floor are called caustics, independent of what effect is causing them.  Here it's conventional refraction by the waves in the water surface, but the brightening we observe in astronomical sources due to gravitational lensing is a caustic sweeping over us as the lensing object moves in front of the background light source.

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Reminds me of some old Tim Wistrom artwork pieces from a few decades back ... one image in a popular poster had a couple of humpback whales swimming past a drowned Kingdome.

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