The cylindrically curved crystal provided only a single line of sight through the donut - shaped plasma and could record only the temperature of ions found at points along that line of sight. (pppl.gov)
I just read reJesus by Frost and Hirsch, and they made some similar points along the lines of this post, and so wanted to include them here (for my own sake). (redeeminggod.com)
RP2 requires lengthening all Pendolino trains to 11 cars from the current mix of 9 and 11, replacing some commuter trains with 125mph stock so as not to delay faster trains, dealing with bottlenecks at seven specific points along the line, adding platforms at Euston and Manchester, and laying more track into Birmingham. (totalpolitics.com)