Gun muffler/silencer technology and railways/railroads

[Anthony Appleyard]

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.

 

[Bluez]

Pretty cool

 

[Anthony Appleyard]

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.