Wonderful, thanks for sharing. I didn't know that ultra-concentrated electrons-in-ammonia solutions exist with a similarly golden hue. 10^-5 mbar atmosphere...

Wonderful, thanks for sharing. I didn't know that ultra-concentrated electrons-in-ammonia solutions exist with a similarly golden hue. 10^-5 mbar atmosphere... hearing those pumps whirring and seeing those pressure gauges gave me painful flashbacks from troubleshooting leaky vacuum lines ;)