- #1
Unicorn.
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Hi,
The gradient ∇3 can be generalized for spacetime as:
∇4 =(∇3 ,d/dct)=(d/dx,d/dy,d/dz,d/dct)
Show that ∇4 is a four-vector.
I just have to write that :
d/dx'=γ(d/dx-βd/dct)
d/dy'=d/dy
d/dz'=d/dz
d/dct'=γ(d/dct-βd/dx)
And
∇4 =(d/dx,d/dy,d/dz,d/dct)=(∇3 ,d/dct) ..?
Thanks
Homework Statement
The gradient ∇3 can be generalized for spacetime as:
∇4 =(∇3 ,d/dct)=(d/dx,d/dy,d/dz,d/dct)
Show that ∇4 is a four-vector.
Homework Equations
The Attempt at a Solution
I just have to write that :
d/dx'=γ(d/dx-βd/dct)
d/dy'=d/dy
d/dz'=d/dz
d/dct'=γ(d/dct-βd/dx)
And
∇4 =(d/dx,d/dy,d/dz,d/dct)=(∇3 ,d/dct) ..?
Thanks