News for hackers. Stuff that matters.

A comment on Cooling the tube – Engineering heat out of the Underground. Parent comment

Re:Cooling the tube – Engineering heat out of the Underground by ams6110 on Saturday June 24, 2017 @03:29PM (#14627085)
Or something like super capacitors to hold the braking energy until the train needs to a accelerate again
[ Parent | on HN ]

There are no comments on this comment yet.