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Originally posted by Thousand
Just recall, here, that while 14000mph seems like an unbelievable speed, it's still not as fast as the Space Shuttle as it's climbing out of the atmosphere.
Description of a very high speed transit (VHST) system operating in its own rarefied atmosphere in evacuated tubes in underground tunnels. Most cases considered took less time to go coast-to-coast (e.g., 21 min) than it takes an aircraft to climb to an efficient operating altitude. VHST's tubecraft ride on, and are driven by, electromagnetic (EM) waves. In accelerating, it employs the energy of the surrounding EM field; in decelerating, it returns most of this energy to the system. Tunnel systems would be shared by oil, water, and gas pipelines; channels for laser and microwave waveguides; electric power lines including superconducting ones; and freight systems. Environmental and economic benefits are substantial, and the technology for building and operating the system exists.
Although the basic principle of pneumatic tubes was first explored in ancient times, it was not until the turn of the 19th century that practical applications began to appear. It was around that time that the Scottish inventor William Murdoch demonstrated his pneumatic apparatus, a device which used compressed air to whisk notes through a length of pipe to a distant recipient. Among the first to appreciate the potential of such systems was a London tinkerer named George Medhurst, who described some practical large-scale applications in his 1812 pamphlet concisely entitled, "Calculations and Remarks, Tending to Prove the Practicability, Effects and Advantages of a Plan for the Rapid Conveyance of Goods and Passengers Upon an Iron Road Through a Tube of 30 Feet in Area, by the Power and Velocity of Air."
Originally posted by Badge01
Why are we stuck on this 14K mph figure?
Originally posted by Roper
What in the hell did they do with all of the soil and rock that had the be excavated to produce a tunnel system that F,ing large?
You could built a mountain or an island with that material.
Roper, just trying to point out that this story is fairy tale.
Originally posted by shearder
Originally posted by Roper
I don't think the excavated soil etc would be piled in one place - do you? Especially when (IF it happens) this would happen across the US. DO you think they would "pick a spot" and dump ALL material there? I highly doubt it. - not logical and imagine trucking all the material day after day from one spot to another thousands of miles away. too costly.
Originally posted by Roper
What I'm saying is, this type of operation would be very hard to hide.
Roper