I had no inkling I needed a mercury thyratron until now! Amazing stuff, this is like something from Fallout brought to life, and the mercury makes it suitably h

I had no inkling I needed a mercury thyratron until now! Amazing stuff, this is like something from Fallout brought to life, and the mercury makes it suitably hazardous. I'm guessing the mercury is integral to the hue? I saw something like this in a railway museum in Yorkshire or thereabout when I was a kid - I recall its label included 'rectifier' and I think it contained mercury, and was flashing or sparking in some way. I guess it must have been one of the mercury rectifiers as already mentioned, though I don't remember it glowing quite so beautifully. Certainly had me intrigued.