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GeneralRe: My poor keyboard Pin
HobbyProggy5-Feb-15 4:13
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GeneralRe: My poor keyboard Pin
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QuestionPlanetary orbit problems again Pin
Rob Philpott5-Feb-15 0:31
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PaulLinton5-Feb-15 12:16
PaulLinton5-Feb-15 12:16 
I haven't seen Interstellar but have read some articles about the science.

The depiction of the black hole was quite interesting. The accretion disk is actually fairly flat. In the movie it looks like a sphere because of the bending of light around the black hole. As I understand it, the light from the far side of the accretion disk that you would expect to go over the top of the black hole and not enter your eye is bent by the warping of space around the hole. The light from the far side enters your eye but appears to be coming from above the black hole and so it looks like there is accretion disk above. -- A little like a normal mirage where light from the sky is bent and appears to be on the road ahead. --

Apparently, they had to write their own rendering software because all existing software assumes light travels in straight lines, which is vastly not true near a black hole. The story goes that they set their new software an overnight rendering job to see what the accretion disk would look like. There was surprise at first when they saw the result but worked out why they got the result when they thought carefully about how light would be bent near the hole.

(Found a link http://www.wired.com/2014/10/astrophysics-interstellar-black-hole/[^])
GeneralRe: Planetary orbit problems again (warning: possible spoiler) Pin
Tom Deketelaere5-Feb-15 21:23
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GeneralRe: Planetary orbit problems again (warning: possible spoiler) Pin
the Kris5-Feb-15 22:21
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GeneralRe: Planetary orbit problems again Pin
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GeneralRe: Planetary orbit problems again Pin
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GeneralRe: Planetary orbit problems again Pin
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