Biefeld-Brown Effect

http://ttbrown.com/defying_gravity/21_gravity.html

https://electrogravityphysics.com/townsend-brown-capacitors/ 

https://electrogravityphysics.com/wp-content/uploads/Musha-Biefeld-Brown.pdf 

https://file.scirp.org/Html/9-7501400_36094.htm 

https://www.sciencedirect.com/science/article/abs/pii/S0304388611001367 

http://jnaudin.free.fr/html/ehdfsv2.htm 

The Biefeld-Brown Effect was established in the 1920s by Dr, Paul Biefeld and T. Townsend Brown.  It finds that a highly charged capacitor, when properly suspended, shows a tendency to move; relative to gravitational force. Their experiments proved that when the poles of a freely suspended charged capacitor (even in a vacuum) were placed on a horizontal axis, a forward thrust would be produced which would move the capacitor in the direction of the positive pole.  Additionally, the direction of thrust would reverse in conjunction with a polarity change. 

This gravitational experiment was demonstrated by placing the capacitor on a  beam balance and charging it.  When the positive pole pointed upwards, the condenser would move to a  point of equilibrium, when the positive pole was pointed downwards, the balance would show a downward deflection.