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Old 02-27-2018, 04:22 PM   #1 (permalink)
 
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Default Gun muffler/silencer technology and railways/railroads

See

https://en.wikipedia.org/wiki/Piston_effect#Tunnel_boom

for a somewhat unexpected need for firearms muffler/silencer technology on railways/railroads - - ends of railway tunnels needing mufflers/silencers like guns have.
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Old 02-28-2018, 07:32 PM   #2 (permalink)
 
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Pretty cool
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Old 05-18-2019, 07:55 AM   #3 (permalink)
 
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I came across another example of modern fast railway technology and gun technology intersecting :: a web site mentioned a new superfast electric train "firing" passengers from one place to another.
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