On Sat, 02 Feb 2013 09:49:36 -0800, G=EMC^2 wrote:
> Swiss in 1986 came up with superconducting at around 30K,and later at > 90K. Liquid nitrogen is 77K. I'm sure at Cern they are big with > superconducting. Good for levitation trains.. Keep in mind liquid > nitrogen is cheaper than milk. TreBert
So how much milk does it take to levitate a train?