Div and curl operators in a left-handed coordinate system?

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SUMMARY

The divergence and curl operators in a right-handed Cartesian coordinate system are defined as follows: divergence is given by \(\nabla \cdot A = \frac{\partial A_{x}}{\partial x} + \frac{\partial A_{y}}{\partial y} + \frac{\partial A_{z}}{\partial z}\) and curl by \(\nabla \times \mathbf{A} = \begin{vmatrix} \widehat{x} & \widehat{y} & \widehat{z} \\ \frac{\partial}{\partial x} & \frac{\partial}{\partial y} & \frac{\partial}{\partial z} \\ A_{x} & A_{y} & A_{z} \end{vmatrix}\). In cylindrical coordinates, the divergence and curl are expressed as \(\nabla \cdot \mathbf{A} = \frac{A_{r}}{r} + \frac{\partial A_{r}}{\partial r} + \frac{1}{r} \frac{\partial A_{\theta}}{\partial \theta} + \frac{\partial A_{z}}{\partial z}\) and \(\nabla \times \mathbf{A} = \left( \frac{1}{r} \frac{\partial A_{z}}{\partial \theta} - \frac{\partial A_{\theta}}{\partial z} \right) \overrightarrow{e_{r}} + \left( \frac{\partial A_{r}}{\partial z} - \frac{\partial A_{z}}{\partial r} \right) \overrightarrow{e_{\theta}} + \left( \frac{A_{\theta}}{r} + \frac{\partial A_{\theta}}{\partial r} - \frac{1}{r} \frac{\partial A_{r}}{\partial \theta} \right) \overrightarrow{e_{z}}\). Transitioning to a left-handed coordinate system involves sign changes in the third component of the curl, indicating a non-trivial adjustment in the mathematical representation.

PREREQUISITES
  • Understanding of vector calculus, specifically divergence and curl operators.
  • Familiarity with Cartesian and cylindrical coordinate systems.
  • Knowledge of the properties of right-handed and left-handed coordinate systems.
Aidyan
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In a right-handed cartesian coordinate system the divergence and curl operators are respectively:

\nabla \cdot A= \frac{\partial A_{x}}{\partial x}+\frac{\partial A_{y}}{\partial y}+\frac{\partial A_{z}}{\partial z}

\nabla \times \mathbf{A}= \begin{vmatrix}<br /> \widehat{x} &amp; \widehat{y} &amp; \widehat{z} \\<br /> \frac{\partial}{\partial x} &amp; \frac{\partial}{\partial y} &amp; \frac{\partial}{\partial z} \\<br /> A_{x} &amp; A_{y} &amp; A_{z} \\<br /> \end{vmatrix}= (\frac{\partial A_{z}}{\partial y}-\frac{\partial A_{y}}{\partial z}) \widehat{x}-(\frac{\partial A_{z}}{\partial x}-\frac{\partial A_{x}}{\partial z}) \widehat{y}+(\frac{\partial A_{y}}{\partial x}-\frac{\partial A_{x}}{\partial y}) \widehat{z}

While, for the (still right-handed) cylindrical coordinate system they are:

\nabla \cdot \mathbf{A}=\frac{A_{r}}{r} + \frac{\partial A_{r}}{\partial r} + \frac{1}{r} \frac{\partial A_{\theta}}{\partial \theta}+\frac{\partial A_{z}}{\partial z}\nabla \times \mathbf{A}= \left( \frac{1}{r} \frac{\partial A_{z}}{\partial \theta}- \frac{\partial A_{\theta}}{\partial z} \right) \overrightarrow{e_{r}} +<br /> \left( \frac{\partial A_{r}}{\partial z}- \frac{\partial A_{z}}{\partial r} \right) \overrightarrow{e_{\theta}} +<br /> \left( \frac{A_{\theta}}{r} + \frac{\partial A_{\theta}}{\partial r}- \frac{1}{r} \frac{\partial A_{r}}{\partial \theta} \right) \overrightarrow{e_{z}}

For a left-handed cartesian and cylindrical coordinate system is it just a matter of changing some sign in the third component? Or is it not that immediate? I'm bit unsure and confused about that... can someone help?
 
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Orientation is a deliberate order. You see from the formulas, that the cross products depend on this order, so there is a left and right for it, i.e. a change of sign for the cross product if you switch from one to the other system.
 

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