Reference Frames

  • Thread starter nanoWatt
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  • #1
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Main Question or Discussion Point

I am wondering about the generality of reference frames, and how abstract they can be.

Is it possible for a vector in one reference frame to not exist in another frame? Or is there always a relation between two reference frames?

Also, are two reference frames like two different sets of coordinate axes? I mean can you always get from one reference frame to another just by knowing the position and or rotation values?
 
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Answers and Replies

  • #2
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I think one vector in one frame can be zero in another frame. For example, in a free fall frame, the gravity vector is juxt zero.
 
  • #3
88
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Ok, I think what I meant to say is,

Can a reference frame A always be represented in terms of reference frame B only by having a spacial and a rotational translation?
 
  • #4
5,428
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Ok, I think what I meant to say is,

Can a reference frame A always be represented in terms of reference frame B only by having a spacial and a rotational translation?
In special relativity the transformations between inertial frames are translation, spatial rotation and boosts. Boosts are rotations that mix space and time and represent a frame that is moving wrt the base frame.
 

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