Discussion
Newton's early calculation of the speed of sound came out too low because he assumed the compressions were
Answer: D
Newton treated the compressions and rarefactions as isothermal, giving the square root of pressure over density and a result roughly fifteen per cent below measurement. Laplace pointed out that the oscillations are far too rapid for heat to be exchanged, so the process is adiabatic, and inserting the specific heat ratio closed the gap.
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