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A comment on Boom (YC W16) – Supersonic Passenger Airplanes. Parent comment

Re:Boom (YC W16) – Supersonic Passenger Airplanes by bradleyjg on Monday March 21, 2016 @04:41PM (#11331795)
Sonic booms are continuous while going faster than the speed of sound. It isn't just something that happens when you cross the barrier.
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