[sdiy] Turing's Cathedral

[Paul Perry]

Wasn't he the ex-post office guy who had to design all those racks of valves 
& keep them running?

So far as mercury delay lines go, my first ever job was as a tech assistant 
at a weather research establishment. We had an ex-WW2 radar - with a mercury 
delay (that held one sweep worth of image so you could subtract it from the 
next sweep & show only what was moving.)
My job was climbing up the OUTSIDE of the tower whenever a cold front was 
coming & hang instruments out. Those were the days.. I don't think we'll see 
a mercury delay line in a retro FX box any time soon.

----- Original Message ----- 
From: "Colin f"
> Who's ever heard of Tommy Flowers ?

paul perry melbourne australia