In 1895, James Clerk Maxwell predicted that the speed of sound could be increased by blowing air through a tube. But it took another 24 years before this prediction was realized. In São Paulo, Brazil, this breakthrough came when physicist Arthur Lippmann and his team built a high-speed wind tunnel.

The idea behind the wind tunnel was to study the effects of high pressure on gases at low temperatures. The researchers used a special type of gas called argon to conduct their experiments. They found that as the pressure in the tunnel increased, the speed of sound also increased. This was a major breakthrough because it showed that there was more than one way for gases to travel.

Arthur Lippmann's team published their findings in the journal Nature in 1922. However,Football View Network they did not receive any recognition until much later. In 1978, they were awarded the Nobel Prize in Physics for their work on high-speed flow theory. Today, we know that the speed of sound is affected by many factors, including temperature and pressure. But the discovery made by Lippmann and his team was a significant step forward in our understanding of how gases behave.

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