Comments on 'Rapid pulsed microwave propagation'
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Giakos and Ishii (1991) claim conclusive experimental evidence that microwave pulse propagation in waveguides and in air occurs at velocities exceeding the free-space speed of light, and assert that it is possible to transmit both energy and information in a non-TEM waveguiding medium at the lightspeed-exceeding phase velocity. The present analysis of their results reveals several significant potential sources of error in both their laboratory findings and those findings' interpretation. Giakos and Ishii reply that the accuracy of the propagation measurements presented in their study exceeds 0.2 percent.