Word: pinged
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Dates: during 1950-1959
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Ross's device also records its information in two other ways. The returning echoes are translated into audible sounds which a trained operator, listening to the loudspeaker, can easily identify. Solid objects, for example, like the Lake Washington canal wall, give a hard, clipped ping. Signals from a smooth beach or hidden sand bar are drawn out, sound for all the world like someone scratching granite with his fingernails. And as if all this were not enough, an automatic pen-and-ink recording is made of all the signals that shine in the scopes and sing their peculiar modulations...
...PING...
...motion, but instead of colliding with one another every 10,000th of an inch, as they do at sea level, they travel many feet between collisions. When a solid body passes through such a rarefied atmosphere, it behaves as if it were moving in space containing a few ping-pong balls in rapid, random motion...
...chamber, the faster the molecules move. When the temperature in the source chamber is 1,000° C., the molecules in the beam speed at 1,800 m.p.h. Models of aerodynamic surfaces placed in this beam behave just as if they were moving at 1,800 m.p.h. through the ping-pong-ball atmosphere on the frontier of space...
Student Li Ping-ning: "America contaminated my moral thinking with such books as How to Win Friends and Influence People and Short Cut to Success...