Recent content by AstroChris

Wow. This got to all kinds of new levels of science to describe this game. Truthfully, the only academics you really need to know is Geometry and Trigonometry. Dead honest truth right there. Knowing the physics of why the ball is reacting the way it is after being struck is, in all aspects, a...

Right, it won't be. It can't be. If you do not hit directly down the middle of the cue ball, it will not leave your cue perpendicular. The other factors are the conditions surrounding you in the environment: humidity, cloth, the cleanliness of the cloth etc etc. We're using a rounded tip to hit...

Ok, so over emphasize the experiment and you'll understand what I am saying. At a very low stroke speed, line up at extreme right hand English and almost "push" through it and it will definitely move to the left, line up dead middle and it will go dead straight. If you are using a regular cue...

If you traveled away from Earth at 99.9% of the speed of light in a big loop and arrived back at Earth 5 years later, the traveler would have aged 5 years and everything back on Earth would have aged about 110 years. At that speed, the traveler will have aged at 4.5% of normal time on Earth.

I don't really understand your question due to the wording but I'll run through it once more, no worries. The low or no deflection shafts combat the side way "skid" that you will see from using English. Even in cases of extreme English the cue ball will go straight vs "pushing" to the side a bit...

Ok, so inside there is zero density observed. As we are looking at it mathematically, knowing that a black hole could be measured to be 10 million x our Sun do we calculate density then or is it irrelevant or is it still zero observed density? Getting correct information can be hard I suppose.

"You can use the Schwarzschild radius to calculate the "density" of the black hole - i.e., the mass divided by the volume enclosed within the Schwarzschild radius. This is roughly equal to (1.8x1016 g/cm3) x (Msun / M)2, where M is defined as above." This quote is from a postdoctoral from...

I'm sure you're coming from an angle on this that I'm not thinking of but Black Holes are most definitely dense. A black hole could be as big as an atom and have the mass of a mountain. And the definition of a singularity is a point or region in spacetime in which gravitational forces cause...

So I happen to be a pro/am pool player myself and know a bit about physics. One thing that I didn't see mentioned and forgive me if it was but the reason that the ball will go almost straight but not quite straight is due to the shaft deflection. Because the shaft also deflects and recoils from...

I don't know about larger on the inside but they will always be denser past the event horizon. And everything inside is brought down to a singularity because of the immense gravity.

And the last force that is explained there is called the Tidal force. It is the same force that you would feel in a small black hole.