Neil deGrasse Tyson

@neiltyson ↗

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Last Checked March 14, 2023

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Thu Oct 13 23:06:05 +0000 2022

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Neil deGrasse Tyson @neiltyson

More Mach-talk… “Mach,” in reference to speeds relative to sound, is named for the nineteenth-century Austrian philosopher-physicist Ernst Mach who, among other subjects, researched shock waves in air, which we more commonly call sonic booms. — PolitiTweet.org

Posted Oct. 13, 2022

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Neil deGrasse Tyson @neiltyson

Mach-Talk... Your speed relative to the speed of sound in the medium you are traveling is called your Mach Number. Mach-1 is the speed of sound. Mach-2 is 2x the speed of sound, etc. At Mach-1 and higher you create a sonic boom. High Mach numbers cause more energetic booms. — PolitiTweet.org

Posted Oct. 13, 2022

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Neil deGrasse Tyson @neiltyson

Even more Mach-talk… The @NASA orbiting International @Space_Station travels 17,000 mph in the near-vacuum of space. While that’s 22x the speed of sound (at sea-level & room temperature), it’s not Mach-anything. The ISS is not traveling through a medium that has a sound-speed. — PolitiTweet.org

Posted Oct. 13, 2022