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damrinder
 2 years ago
Best ResponseYou've already chosen the best response.0yes dear specially when it passes close to a very huge heavy object like sun or close to a star ..

Nasir2012
 2 years ago
Best ResponseYou've already chosen the best response.0The space fibers, as per the Einstein, is curved around the massive objects. so every thing passing near a massive object get curved as per the curvature around the object. and this is why an object revolves around other. it only changes its direction

Algebraic!
 2 years ago
Best ResponseYou've already chosen the best response.1the speed doesn't change, but space is curved around massive objects, so it has to travel a longer path and therefore takes more time (which has the net effect of seeming to 'slow' it)

kappa007
 2 years ago
Best ResponseYou've already chosen the best response.1The speed of light will change only if the Refractive Index of the medium it's travelling in, changes. Near massive objects , I think the previous explanation is good.

jasonxx
 2 years ago
Best ResponseYou've already chosen the best response.1agreed, speed of light remains constant till there exists no change in medium

Algebraic!
 2 years ago
Best ResponseYou've already chosen the best response.1the speed of light is actually constant in any medium, it's just that due to scattering the path it must take through different materials is very different in length.

jasonxx
 2 years ago
Best ResponseYou've already chosen the best response.1sorry, this concept is quite alien to me and i must say, speed changes if medium is changed

kappa007
 2 years ago
Best ResponseYou've already chosen the best response.1If the speed didn't change we would never have been able to detect neutrinos. (Cheronkov radiation)

jasonxx
 2 years ago
Best ResponseYou've already chosen the best response.1we must thank @kappa007 for this piece of wisdom

kappa007
 2 years ago
Best ResponseYou've already chosen the best response.1also, then R.I. of all media would be 1.

Algebraic!
 2 years ago
Best ResponseYou've already chosen the best response.1oh aye? well what causes light to 'slow down' in a material? magic? or is it all that gravity from all those protons and neutrons

jasonxx
 2 years ago
Best ResponseYou've already chosen the best response.1@Algebraic! if you've got concept then only entertain else don't mislead or misguide in a funny manner

kappa007
 2 years ago
Best ResponseYou've already chosen the best response.1Still, you can't compare that with gravitational lensing. If we dig down to the basics of refraction.. I think the slowing down maybe because of interaction between light's electromagnetic field and the medium's e.m. field.

Algebraic!
 2 years ago
Best ResponseYou've already chosen the best response.1no kidding. absorption and reemission. ie scattering

kappa007
 2 years ago
Best ResponseYou've already chosen the best response.1can you explain please.

Algebraic!
 2 years ago
Best ResponseYou've already chosen the best response.1read the wiki page or something.

jasonxx
 2 years ago
Best ResponseYou've already chosen the best response.1The speed of light does not decrease. Anything moving at the speed of light stays at the speed of light and cannot be slowed down (unless you want to talk about "tachyons" that may or may not exist)..... When light passes through a medium the particles of light, photons, do not change speed. The wavelength of light though, does change. There is a simple relation that you can follow (wavelength in medium) = (wavelength in vacuum) / (index of refraction of medium) What is really slowing the photons down is their interaction with the particles in the medium, which shortens the wavelength. The photons themselves though still are moving at the speed of light, it is just this interaction that causes the dilation. so i don't think scattering makes any sense, it's just a blunder. or may be i am wrong

kappa007
 2 years ago
Best ResponseYou've already chosen the best response.1I'll say that, 'c' is indeed constant but not exactly the speed of light, as, the basic R.I. definition is based on such speeds only. During interaction with particles , light tends to behave as a particle. So, I think the photonparticle interaction thing must be the reason.

jasonxx
 2 years ago
Best ResponseYou've already chosen the best response.1speed always remain constant, it's just interaction that acts as obstacle slowing down the speed

Algebraic!
 2 years ago
Best ResponseYou've already chosen the best response.1http://en.wikipedia.org/wiki/Scattering learn all about it here.

jasonxx
 2 years ago
Best ResponseYou've already chosen the best response.1nice to know, people believe in wikipedia

kappa007
 2 years ago
Best ResponseYou've already chosen the best response.1there's no term = 'speed' in the page suggested. I
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