Nuclear Power

With all the interest in Nuclear energy at the moment, I thought it was worth digging this picture out.
It was taken about 25 years ago so I may not have the Facts 100% right.
I took it at Berkeley nuclear laboratories, and it was a mini Lego type of nuclear reactor.
They assembled the graphite blocks in various ways, to try new ideas.
My picture shows one of the scientists with a bulb representing the power output of the nuclear reactor.