So, you're travelling at the speed of light.....
Discussion
My interpretation:
If travelling at C(speed of light), time ceases to be a factor, so therefore, if truly at C, could occupy every possible point in the universe. Singularities obviously create some issues due to their gravity, but the question of a mirror infront of you whilst at C I figure to be this- you see everything.
If travelling at C(speed of light), time ceases to be a factor, so therefore, if truly at C, could occupy every possible point in the universe. Singularities obviously create some issues due to their gravity, but the question of a mirror infront of you whilst at C I figure to be this- you see everything.
HoHoHo said:
I would suggest that on the assumption you are travelling on a plane at 600mph and hold a mirror out in front of you (you can't because of the wind but ignore that), you see what is there because it's all travelling at the same speed then the speed of light would be no different?
However, what if you hold a microphone in front of you whilst travelling at mach 4 and fart
I remember reading somewhere that an airplane travelling at approx 600mph is 1 atom less in length than when it is at rest(relative to the earth).However, what if you hold a microphone in front of you whilst travelling at mach 4 and fart
Toaster said:
stew-S160 said:
I remember reading somewhere that an airplane travelling at approx 600mph is 1 atom less in length than when it is at rest(relative to the earth).
Concorde grew in length and slightly more than 1 Atom 
Einion Yrth said:
Toaster said:
stew-S160 said:
I remember reading somewhere that an airplane travelling at approx 600mph is 1 atom less in length than when it is at rest(relative to the earth).
Concorde grew in length and slightly more than 1 Atom stew-S160 said:
Einion Yrth said:
Toaster said:
stew-S160 said:
I remember reading somewhere that an airplane travelling at approx 600mph is 1 atom less in length than when it is at rest(relative to the earth).
Concorde grew in length and slightly more than 1 Atom Just a couple of links for you
http://mathsci.ucd.ie/~onaraigh/acm10030/assignmen...
"Friction is ALWAYS a factor. There is no magical speed at which friction no longer slows your craft -- the effect just becomes minimal with respect to small velocities. A space shuttle would eventually come to a halt, just as a craft traveling at .9999c would".
Read more: http://www.physicsforums.com
Toaster said:
So you are saying that you discount friction as an aspect to be taken in to account when considering relativity in a real world example of a airplane
Just a couple of links for you
http://mathsci.ucd.ie/~onaraigh/acm10030/assignmen...
"Friction is ALWAYS a factor. There is no magical speed at which friction no longer slows your craft -- the effect just becomes minimal with respect to small velocities. A space shuttle would eventually come to a halt, just as a craft traveling at .9999c would".
Read more: http://www.physicsforums.com
The example of an airplane size change is just an example of Lorentz Contraction that most seem to grasp. However, actually travelling at C in an atmosphere does create a fJust a couple of links for you
http://mathsci.ucd.ie/~onaraigh/acm10030/assignmen...
"Friction is ALWAYS a factor. There is no magical speed at which friction no longer slows your craft -- the effect just becomes minimal with respect to small velocities. A space shuttle would eventually come to a halt, just as a craft traveling at .9999c would".
Read more: http://www.physicsforums.com
k load(technical term) of friction. Generally though, the idea of light speed travel is given in a vacuum, where friction is much reduced.There is also the idea of a sort of bubble around such a vessel to further prevent friction issues.
stew-S160 said:
The example of an airplane size change is just an example of Lorentz Contraction that most seem to grasp. However, actually travelling at C in an atmosphere does create a fk load(technical term) of friction. Generally though, the idea of light speed travel is given in a vacuum, where friction is much reduced.
There is also the idea of a sort of bubble around such a vessel to further prevent friction issues.
The problem with that bubble it would be like a balloon generating static electricity as it passed through all those space clouds or just get heavier and heavier is it collected all the dust on the outside. Mind you that vessel would be immaculately clean k load(technical term) of friction. Generally though, the idea of light speed travel is given in a vacuum, where friction is much reduced.There is also the idea of a sort of bubble around such a vessel to further prevent friction issues.
Light travels at the same speed for ALL observers, which is why Eistein's Relativity is so hard to understand and even harder to explain. The answer would be C.
From Wiki; " It is based on two postulates: (1) that the laws of physics are invariant (i.e., identical) in all inertial systems (non-accelerating frames of reference); and (2) that the speed of light in a vacuum is the same for all observers, regardless of the motion of the light source. So the guy holding the mirror sees the light at light speed, bouncing off him onto the mirror and into his eye, just as if he were standing still.
From Wiki; " It is based on two postulates: (1) that the laws of physics are invariant (i.e., identical) in all inertial systems (non-accelerating frames of reference); and (2) that the speed of light in a vacuum is the same for all observers, regardless of the motion of the light source. So the guy holding the mirror sees the light at light speed, bouncing off him onto the mirror and into his eye, just as if he were standing still.
Toaster said:
I have observed Light accelerate.......truly I have......they say its not possible but it is
The speed of light is different in water than it is in air and in vacuum. So it could be said to accelerate when travelling from one to another. Not sure how this can bee 'observed' though, so how did you observe it? Galileo said:
The speed of light is different in water than it is in air and in vacuum. So it could be said to accelerate when travelling from one to another. Not sure how this can bee 'observed' though, so how did you observe it?
Galileo, I am so glad someone has asked this question, you can observe this for yourself around June time after night fall, you need to take a trip to Le-Mans and go to the 24 hour race. If you wander just towards the beginning of the Mulsanne straight, you cannot see the cars but you can see the light from the headlights in the trees as the cars start accelerating from the bend to the strait you see light accelerating..........now what would Einstein said about that... 
Photons of light must always travel at speed C no matter where they are or where they came from.
Therefore 'the rules' say that a photon of light does not accelerate. It can also be argued that they always travel in 'straight lines' (or shortest path), removing the point that a change in velocity constitutes acceleration.
The difference in angle of a beam of light entering one medium to another is because the 'same photon' does not do all the travelling. Instead photons are constantly being absorbed and emitted by atoms along the path of the medium of travel.
Denser mediums (ones with more atoms) will see the photon being absorbed more often and emitted more often, creating the angle/speed difference of the 'beam' (but not a change of speed of any individual photon).
Therefore 'the rules' say that a photon of light does not accelerate. It can also be argued that they always travel in 'straight lines' (or shortest path), removing the point that a change in velocity constitutes acceleration.
The difference in angle of a beam of light entering one medium to another is because the 'same photon' does not do all the travelling. Instead photons are constantly being absorbed and emitted by atoms along the path of the medium of travel.
Denser mediums (ones with more atoms) will see the photon being absorbed more often and emitted more often, creating the angle/speed difference of the 'beam' (but not a change of speed of any individual photon).
stew-S160 said:
However, actually travelling at C in an atmosphere does create a fk load(technical term) of friction.
Good description of something travelling at 0.9 C through the atmospherek load(technical term) of friction.Toaster said:
Galileo said:
The speed of light is different in water than it is in air and in vacuum. So it could be said to accelerate when travelling from one to another. Not sure how this can bee 'observed' though, so how did you observe it?
Galileo, I am so glad someone has asked this question, you can observe this for yourself around June time after night fall, you need to take a trip to Le-Mans and go to the 24 hour race. If you wander just towards the beginning of the Mulsanne straight, you cannot see the cars but you can see the light from the headlights in the trees as the cars start accelerating from the bend to the strait you see light accelerating..........now what would Einstein said about that... alock said:
stew-S160 said:
However, actually travelling at C in an atmosphere does create a fk load(technical term) of friction.
Good description of something travelling at 0.9 C through the atmospherek load(technical term) of friction.http://www.bbc.com/news/uk-scotland-glasgow-west-3...
A team of Scottish scientists has made light travel slower than the speed of light.
They sent photons - individual particles of light - through a special mask. It changed the photons' shape - and slowed them to less than light speed.
The photons remained travelling at the lower speed even when they returned to free space.
The experiment is likely to alter how science looks at light.
A team of Scottish scientists has made light travel slower than the speed of light.
They sent photons - individual particles of light - through a special mask. It changed the photons' shape - and slowed them to less than light speed.
The photons remained travelling at the lower speed even when they returned to free space.
The experiment is likely to alter how science looks at light.
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