2,579 reputation
1517
bio website
location Sarisha, India
age
visits member for 3 years, 11 months
seen Jun 9 at 15:46

Dec
10
awarded  Yearling
Oct
1
awarded  Good Answer
Sep
15
awarded  Popular Question
Jul
8
awarded  Famous Question
May
9
awarded  Nice Question
Feb
17
awarded  Popular Question
Dec
19
answered At what velocity does sea water leave a pipe run into a fresh water lake (for equal surface levels)?
Dec
19
answered Intuitive explanation of the inverse square power $\frac{1}{r^2}$ in Newton's law of gravity
Dec
10
awarded  Yearling
Oct
18
answered Rotation of Spacetime => Change in orbit/path
Aug
25
awarded  Notable Question
Jul
9
awarded  Nice Question
May
4
awarded  Nice Answer
May
4
awarded  Nice Answer
Dec
10
awarded  Yearling
Nov
26
awarded  Popular Question
Nov
7
comment What would a rotating black-hole look like to a “geo-stationary” observer orbiting the black hole
GRS 1915 has a mass of ~15 Msun, so with a near-maximal spin, the horizon has a radius of 15*1.5 km = 22.5 km, so the orbital velocity is actually "only" about 1/2 c.
Nov
7
comment Would the time dilation from being in low orbit around a black hole delay/slow the effects of quantum tunneling?
on a much shorter time, the gravitational wave losses would cause the rock to spiral into the black hole.
Jul
21
comment Why aren't space probes like New Horizons sped up in space?
the ion drive requires electrical power, which usually means solar panels, which work well close to the sun, but not far away, like NH. A nuclear thermal generator could do it, but Pu238 is in very short supply these days, and NH already is using most of what was left.
Jul
21
answered Are orbits interior to Jupiter's orbit less stable than orbits exterior to Jupiter's orbit?