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A Nobel prize-winning observation of the orbits of binary pulsars produced the first observational evidence for gravity waves.Gravity waves are thought to be produced in more familiar scenarios like a child throwing a ball, but the effect is just too weak to observe.
Actually, detection of gravitational waves appears to require devices separated by as much distance as possible. I understand that gravitational waves work not directly on objects but by rearranging the distribution of space between them. So, if a light source is separated from an observer, and a gravitational wave passes between them, the distance between them will vary, which will manifest itself as a Doppler shift although neither the source nor the observer will be aware of any change of its own position. The more mean space between them, the more pronounced the effect should be.
two positively charged plates
Quotetwo positively charged platesIf the plates are far apart (eg 1 km), the charge will provide little repulsion between the plates.The same goes if the plates are + & -, or even just uncharged.