Recent content by kochanskij

Mathematically, a flat 2D surface folded down over the edge of a desk has no curvature, so a Flatlander could not detect the fold. Same for us in space if our 3D space was folded down in a 4 dimensional sense. Suppose 3D space was folded down in two different perpendicular directions, both...

Thank you for your correction. I feel silly that I forgot that you don't find an average velocity by adding the two velocities and dividing by 2. A very basic error on my part.

From what I've read, it is not possible to measure the one way speed of light. We must reflect it off a mirror and then divide its travel time by 2, giving us its round trip average speed. Time dilation makes synchronizing two separated clocks impossible. We just assume light goes at C in all...

Thank you for explaining this misunderstanding I had of gravity inside a black hole. So what would I see and feel while inside? I would be weightless in my free fall? I will feel increasing tidal forces no matter how I orient my body? I can't see or point to the singularity? Am I in a self...

Thank you for the clarification of my misunderstandings. But I'm still trying to picture what a person inside the BH would see and feel. Since the singularity is space like and in the future, he couldn't point towards it, right? Why would he experience tidal forces and stretching? Isn't that a...

I have read about the spaghettification of objects due to tidal forces as they get close to the singularity. Gravity at your feet is stronger than at your head, so you get stretched and pulled apart. In this case, the singularity is a point in space. But I also read about the time coordinate...

There are a pair of entangled particles moving in opposite directions. A measurement is done on particle A, the wavefunction collapses randomly, you observe either spin up or spin down, A does an action at a distance on B, particle B instantly collapses to the opposite spin state, a measurement...

I completely agree with what Fra and Demystifier said above. All I ever said was that String Theory methods violate the philosophy of Popper's version of the scientific method. I never thought that physicists should or must follow Popper's philosophy precisely. So, is there any possible...

The Scientific Method says that if a theory disagrees with observations, it has been falsified (according to Karl Popper). String theory predicts that spacetime is 10-D, but it is observed to be 4-D. This is a wrong prediction by the theory. So string theory is falsified. String theorists then...

Can quantum mechanics be derived from deeper principles? For example, special relativity results directly from the fact that the speed of light is the same for all reference frames. Conservation laws of momentum and energy come from certain symmetries of space and time. Does quantum mechanics...

An outstanding sci-fi book and movie is "Contact" by Carl Sagan. His attempt to describe a method of superluminal travel in a scientific way led to modern physics research into wormholes.

In the physical theories that I refer to, the Zeta function does NOT occur. Just the infinite series 1+2+3+4+... or the infinite series 1+1+1+1+... occurs. My question is: Is it correct to equate the finite values of -1/12 and -1/2 to these series? It seems absurd to claim that the sum of an...

Analytic continuation can be used in mathematics to assign a finite value to an infinite series that diverges to infinity. Is it correct and legitimate to equate this value to a diverging infinite series that occurs in a physical theory of nature? Will this process give a correct answer that can...

I just want to point out a complication with the Alcubierre Warp Drive that is often overlooked. Besides requiring large amounts of negative energy, devices would have to be placed in space along the flight path and timed to automatically trigger space contraction in each one's local area. There...

Thank you Simon and ZZ for your references. I will continue to read them. But from what I read, stuff like dispersion, pulse width, pulse peak shifting, and so on are subtle optics problems in this difficult experiment. Let's avoid all this with a thought experiment: Very intense laser pulses...