652 karma · joined July 23, 2018
I'm really interested in how this is done with multiple clocks over a distance. Can anyone explain? It feels like it would be very difficult since asking "what time is it there?" at the timescale of atomic clocks is kind of a bit meaningless? And that's before considering the absolute local nature of time and the impossibility of a general universal time per relativity.
PS One of the answers in the SO thread mentions JET in the UK. I spent a few summers there as an electrical engineering student (it's home to the MAST and JET fusion reactors). When the JET tokamak ignites a plasma, it can't sustain it for very long (we are not yet at the point of extracting enough energy to sustain the reaction). As a result they need to ignite the plasma and keep it hot. They can't do it for more than 1-10 seconds. During that time, they draw massive amounts of power - they're permitted to draw up to 1% of the UK's capacity for a short period, whilst they simultaneously dump all the energy stored in two gigantic flywheel generators housed in a nearby building. I've never been there when the flywheels are running but I've climbed around beneath them. There's nothing quite like massive engineering :)