Love that Bird
Francis Spufford: Supersonic, 6 June 2002
“... it instead, colliding with the air molecules in its path at a pressure of about 2lb per square foot. The assaulted air shook, and gave up the dose of extra energy as sound. Concorde climbed on, dragging its sack of reverberating noise behind. There is, of course, no such thing as the sound barrier. What there is, is the aerodynamic challenge of the ... ”