Recent content by Phil Lawless

Gravity is a central force and as such cannot change a satellie's angular momentum around the central body. For a simple system, some type of dissipation is necessary for an asteroid to be captured by a planet. Collisons with other asteriods come to mind. Tidal forces might break an asteroid...

Yes, I was invoking time dilation, but fairly reasonably so. Gravity also makes clocks run slower. As for the astronaut's lifetime, it all does depend on your frame of reference, doesn't it?

It is possible to extrapolate some classical behaviors into the boundary of a black hole. In the case of supermassive black holes, the event horizon is so far from the center of mass that the gradient of the gravitational field is relatively small, A human astronaut could cross that boundary...

My name is Phil Lawless. I am a retired physicist who spent 37 years learning applied physics at a research institute. Some was routine, but on the whole, I had a lot of fun. I am now having fun exploring physics topics on my own.

Do a search on "Quantum interference with slits" by Thomas Marcella. It is in arxive.org. It gives a full quantum analysis of the two-slit geometry.