this post was submitted on 24 Feb 2024
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China's hyperloop maglev train has achieved the fastest speed ever for a train at 623 km/h, as it prepares to test at up to 1,000 km/h in a 60km long hyperloop test tunnel. (robbreport.com)
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[–] bluGill@kbin.social 1 points 2 years ago

This is greatly exadurated. Some materials work as you say but there are plenty of obtions that a small leak will not collapse anything. generally we don't even assume a perfect vacuum.