View Single Post
  #10  
Old Posted Jun 1, 2013, 3:29 AM
Wiz Khalifa Wiz Khalifa is offline
Registered User
 
Join Date: Jul 2008
Location: Pittsburgh, PA
Posts: 384
Quote:
Originally Posted by ardecila View Post
Just to play devil's advocate; the power and weight requirements would dramatically change in the absence of friction.
Yep, all it takes is for some scientist to stumble on the right mix of elements for a room-temperature superconductor, and not only does this become feasible... but you could start planning to build and test trains the very next day.
Reply With Quote