C constant to the observer as well?

In summary, Special Relativity states that the speed of light, c, is constant to every observer in every inertial reference frame. This means that an observer moving at a constant velocity to the frame in which the system is in will also measure c. This concept is not related to the index of refraction between mediums, where frequency may be constant but wavelength may change.
  • #1
neurocomp2003
1,366
3
Stupid Question:

SR says that c is constant in which ever I-FRAME its in right?
now does that include an observer looking into the system? that they would also measure c? or would they measure c+vFrame?

Also Does this have anything to do with the "index of refraction" between mediums where f is constant and lambda changes?
 
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  • #2
neurocomp2003 said:
Stupid Question:

SR says that c is constant in which ever I-FRAME its in right?
Special Relativity says the speed of light, c, is constant to every observer in every inertial reference frame. An inertial reference frame is a frame that does not accelerate.

neurocomp2003 said:
now does that include an observer looking into the system? that they would also measure c?
Only if this observer is moving at a constant velocity to the frame in which your "system" is in.

neurocomp2003 said:
or would they measure c+vFrame?
No.
neurocomp2003 said:
Also Does this have anything to do with the "index of refraction" between mediums where f is constant and lambda changes?
No.
 
  • #3


Yes, the constant c applies to all observers, including those looking into the system. This is a fundamental principle of special relativity, which states that the speed of light is constant for all observers, regardless of their relative motion. This means that no matter how fast an observer is moving, they will always measure the speed of light to be the same value, c.

The index of refraction in different mediums does play a role in the propagation of light, but it does not affect the constant speed of light. The index of refraction is a measure of how much a material slows down the speed of light, but the speed of light itself remains constant. So while the wavelength of light may change in different mediums, the speed of light will always be the same for all observers.
 

What does "C constant to the observer" mean?

"C constant to the observer" refers to the speed of light, which is denoted by the letter "C". It means that the speed of light appears constant to an observer regardless of their relative motion or the motion of the light source.

Why is the speed of light considered a constant?

The speed of light is considered a constant because it has been measured and found to be the same for all observers, regardless of their relative motion. This has been confirmed by numerous experiments and is one of the fundamental principles of physics.

How is the speed of light related to the theory of relativity?

Einstein's theory of relativity states that the laws of physics are the same for all observers in uniform motion. This includes the speed of light, which is considered constant for all observers. The theory of relativity also explains how the speed of light affects space and time.

Is the speed of light truly constant?

According to our current understanding of physics, the speed of light is considered constant. However, there are some theories that suggest it may vary under extreme conditions, such as near black holes. These theories are still being studied and have not been conclusively proven.

How is the speed of light measured and determined to be constant?

The speed of light is measured using various methods, including the use of a laser and mirrors, as well as the observation of the Doppler effect on light from distant objects. These experiments have consistently shown that the speed of light is the same for all observers, leading to the conclusion that it is a constant value.

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