Twenty years of physics: Fluid dynamics

IN 1948 VEHICLES were already moving faster than sound without being shot out of gun barrels. The “sonic barrier” was being penetrated. Soon rocket‐propelled vehicles were to become intercontinental and were even likely to go into orbit. There was an whether they could be used for constructive purposes. The processes in urgent need to understand the fearful the atmosphere that produce weather damage caused by blast waves from could already be modeled with highnuclear explosions and to determine speed computing techniques.

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