(continued from Part 2)
Note- All calculations shown are in the equatorial plane

Frame-dragging at the event horizon for a black hole
3 sol mass with an angular momentum factor of a_∗ = 0.95

Event horizon radius = 5813.988 m (see Other radii relating to black holes)

(incidentally, the reduced circumference for 5813.988 m is 8861.1 m (using the equation from Part 1) which is the Schwarzschild radius for a 3 sol mass static black hole which...

(continued from Part 1)
Note- All calculations shown are in the equatorial plane

Frame-dragging at surface of a white dwarf
1.14 sol mass with a radius of 4.5x10^6 m and a 10 minute rotation period-

v (tangential) = circumference x frequency = 2[itex]\pi[/itex]4.5x10^6 x 1/600 = 47,218.138 m/s

J = vmr 0.4 = 47,218.138 x (1.14 x 1.9891x10^30) x 4.5x10^6 x 0.4 = 1.9273x10^41 Nms

where J is angular momentum in Nms, v is velocity...

Frame-dragging
Einstein's theory of general relativity predicts rotating objects drag spacetime around themselves in a phenomenon referred to as frame-dragging or the Lense-Thirring effect (spacetime is the four dimensional continuum of the three spatial dimension plus time; continuum is a continuous series where no part is noticeably different from its adjacent parts, although the ends or extremes are very different from each other).

The effects of frame-dragging are sometimes...