User:Sparkyscience/Test2
From Wikipedia, the free encyclopedia
"EM Drive" redirects here. For electromagnetic spacecraft drives, see Electrically powered spacecraft propulsion. For electromagnetic terrestrial drives, see electric motor, linear motor, and induction motor.
A radio frequency (RF) resonant cavity thruster, also known as an EmDrive, is a controversial proposed type of electromagnetic thruster where an electromagnetic field inside the microwave cavity appears to produce thrust. The device does not expel any observed propellant and seems to produces a net reaction force, which would violate the conservation of momentum and Newton's third law. Several tests have observed an apparent thrust, but many theoretical physicists and commentators have labelled the device "impossible" and state the level of observed thrust may be due to measurement error.[1]