Thursday, June 3, 2010

Resonant Modes of a Conical Cavity - Greg Egan

"In September 2006, the magazine New Scientist published an unfortunate beat-up [1] in which they hyped the immensely unlikely claims of a British engineer named Roger Shawyer, who had designed what he described as an “electromagnetic drive” (aka “EmDrive”) for satellites. This device supposedly produced a net thrust solely by bouncing microwaves back and forth in a closed metal cavity, the idea being that making the cavity asymmetric would mean that a greater force would be exerted by the microwaves on one end compared to the other, causing the entire device to accelerate [2]."

5 out of 5

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