Randy Welt's user avatar
Randy Welt's user avatar
Randy Welt's user avatar
Randy Welt
  • Member for 7 years, 11 months
  • Last seen more than 3 years ago
7 votes
3 answers
826 views

Why is the photon-sphere around a Kerr Black Hole spherical and not ellipsoid?

3 votes
1 answer
732 views

What happens when an anti-proton and an electron collide with each other?

3 votes
0 answers
26 views

Is there any good literature about conceptual designs of Quantum (Micro-) Black Holes Machines?

3 votes
1 answer
211 views

What is the Kerr factor for Sagittarius A*?

2 votes
0 answers
408 views

Is there a map which shows all the black holes in our galaxy?

2 votes
0 answers
665 views

Can the diffraction/interference pattern behind the slit (double slit) be calculated with Feynman path integrals (QED)?

2 votes
0 answers
47 views

Do have Geodesic equation of motions (GR) have any practical use in control theory to control e.g. a rocket on Lunar/Mars space flights? [closed]

2 votes
0 answers
57 views

What theory is used to describe photonuclear reaction and photodisintegration?

2 votes
2 answers
87 views

Is Venus in the habitale zone of a robot (transistor CMOS brain, metal body) ? Any definition by NASA?

2 votes
0 answers
31 views

What is the plot function: number of galaxy-clusters ( gravitationally bound objects) within the cosmic event horizon vs. time?

1 vote
1 answer
57 views

Has the human race ever done Antimatter experiments in outer space (e.g. on the ISS)? [closed]

1 vote
1 answer
393 views

How to sensor Jerk=$d^3{\bf r}/dt^3$, or higher derivatives (4th, 5th, 6th order) when applied in the equation of motion of a ballistic missile?

1 vote
2 answers
361 views

Number of Orbitals - Hydrogen Orbital just one, but why can we plot also higher states e.g. SPDF orbits?

1 vote
1 answer
65 views

Calculation, radius of Saggriatus A* (SMBH) , Error in Wikipedia?

0 votes
0 answers
58 views

Correct calculation for a quantum black hole (example: LHC)?

0 votes
1 answer
729 views

How to calculate angular momentum (J) in the Kerr parameter equation?

0 votes
1 answer
97 views

What is the relation between Rössler attractor and thin accretion discs (like in the movie Interstellar)?

0 votes
1 answer
101 views

What size astroblaster would be required to shoot a man to the moon (as alternative to rocket propulsion systems)?

0 votes
0 answers
55 views

Could we imagine spin as rotating probability densities (orbitals) in a kind of expanded orbital model?

0 votes
1 answer
128 views

What is the ultimate "matter reaching diameter" (radius) for a laser beam with information sent out today compared to the observable universe?