TRIGA Mark I at 240 kW
There is a good explanation of the blue glow (Čerenkov radiation) on Wikipedia.
(click images to enlarge)
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| Photo by Jeffrey Bradford, 1987 | Photo by J.Michael Pollock, 1993 |
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| This picture is slightly overexposed. | Another overexposure, with the pool lights left on. |
| Photos by Mark Chen, 1998 | |