Thursday, April 1, 2021

What mass should balance the force of electrostatic repulsion?

 A known electric charge, for example, + or - 1 coulomb, created by (a) electrons, (b) positrons, (c) protons, is distributed over the surface of a sphere of a known radius, for example, 1 m. What mass should be inside this sphere to balance the force electrostatic repulsion by gravitational force? Should it be a black hole or not?

Tuesday, March 30, 2021

🧲 Polarized Light in the Vicinity of the Supermassive Black Hole at the Center of Galaxy M87 🌉

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