0 a large increase in the force opposing a moving object as its speed reaches the speed at which sound travels:
Wattenberg equates this development to 'breaking the demographic sound barrier ', and his book is an engaging discussion of the wide-ranging challenges this demographic revolution will pose.
I am sure that grandma, when she goes through the sound barrier, will not even notice it, however fantastic it may sound.
Don't talk about going through the stratosphere and breaking the sound barrier and all the rest of it.
That is what they are going to do; and who wants to go through the sound barrier?
I am advised that the installation of a ground sound barrier would have little practical effect.
The only thing he will not include is the nonsense of the sound barrier.
He made a number of references to supersonic speeds and at least one reference to breaking the sound barrier.
We have just about one aircraft which will break the sound barrier.