Through a wine glass, darkly…

Usually I disapprove of using a wine glass for any purpose other than drinking wine, but here’s a very neat short video by Phil Marshall explaining how you can use a one to simulate a strong gravitational lens such as the system that produced the wonderful Einstein ring recently discovered by Euclid. More specifically it shows how perfect alignment leads to a ring whereas other configurations can produce multiple images or arcs.

https://www.youtube.com/watch?v=IXfUk4Eltkg

If you’re planning to try this at home, please remember to empty your glass beforehand.

#Euclid #PhilMarshall #strongGravitationalLensing #wineGlass