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Predictably, there is a notation conflict. Given that the article on spherical coordinates would predictably end up getting written by mathematicians, while this one would predictably end up getting written by physicists (since mathematicians generally only use Cartesian coordinates), predictably the notations are different, causing confusion to anyone who clicks on spherical coordinates. The matter remains unresolved. Revolver 05:48, 28 August 2005 (UTC)
The description of φ says: "φ is the angle with the X-Z-plane". I would say "φ is the angle with the X-Z-plane with positive X" or something else, because otherwise the angle could be measured with a negative X, which gives a wrong angle. 80.32.129.34 12:06, 15 March 2007 (UTC)
is it correct to specifically call out the time derivative in those descriptions? would it not be more accurate to call out the spatial derivatives? i.e., in cylindrical coord's, dr_hat/dtheta = theta_hat. aren't the time derivatives only collapsed chain rules of the spatial derivative transformations? (dr/dt = dr/dtheta * dtheta/dt = dtheta/dt * theta_hat) ? —Preceding unsigned comment added by 64.203.249.10 ( talk) 01:22, 28 September 2007 (UTC)
COMMENT: I think the formula for φ is not correct as the arctan() function only provides values on the (-π/2;π/2) interval. As a result, I think the best is to adapt the calculation of φ to, for instance, each quadrant ([0;π/2), [π/2;π), [π;3π/2) and [3π/2;2π)). See comment in [ [1]]. —Preceding unsigned comment added by 137.111.219.14 ( talk) 02:24, 14 February 2008 (UTC)
How come ρ, the magnitude of the projection of the vector on xy-plane, has a direction. It simply goes against the definition.
θ and φ are not the angle between the "VECTOR" and the Z-axis or its projection and the X-axis.
But the are the angles between the "POSITION" of the "Vector" and those axes. Actually here we are dealing with Vectors which are not that free in space ( Their position should be specified).
For example E(0,0,0)= 3 i + 4 j + 5 k , has a different "spherical" representation at points (0,0,0) and (1,0,0) and so on. —Preceding unsigned comment added by 118.100.167.123 ( talk) 10:25, 24 June 2010 (UTC)
Currently the text includes:
But it is unclear what the difference is between (for example), and . Presumably , then is ?
Even if the symbols seem trivial, it would be good to define them. Thanks!
![]() | This article is rated Start-class on Wikipedia's
content assessment scale. It is of interest to the following WikiProjects: | ||||||||||||||||||||
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Predictably, there is a notation conflict. Given that the article on spherical coordinates would predictably end up getting written by mathematicians, while this one would predictably end up getting written by physicists (since mathematicians generally only use Cartesian coordinates), predictably the notations are different, causing confusion to anyone who clicks on spherical coordinates. The matter remains unresolved. Revolver 05:48, 28 August 2005 (UTC)
The description of φ says: "φ is the angle with the X-Z-plane". I would say "φ is the angle with the X-Z-plane with positive X" or something else, because otherwise the angle could be measured with a negative X, which gives a wrong angle. 80.32.129.34 12:06, 15 March 2007 (UTC)
is it correct to specifically call out the time derivative in those descriptions? would it not be more accurate to call out the spatial derivatives? i.e., in cylindrical coord's, dr_hat/dtheta = theta_hat. aren't the time derivatives only collapsed chain rules of the spatial derivative transformations? (dr/dt = dr/dtheta * dtheta/dt = dtheta/dt * theta_hat) ? —Preceding unsigned comment added by 64.203.249.10 ( talk) 01:22, 28 September 2007 (UTC)
COMMENT: I think the formula for φ is not correct as the arctan() function only provides values on the (-π/2;π/2) interval. As a result, I think the best is to adapt the calculation of φ to, for instance, each quadrant ([0;π/2), [π/2;π), [π;3π/2) and [3π/2;2π)). See comment in [ [1]]. —Preceding unsigned comment added by 137.111.219.14 ( talk) 02:24, 14 February 2008 (UTC)
How come ρ, the magnitude of the projection of the vector on xy-plane, has a direction. It simply goes against the definition.
θ and φ are not the angle between the "VECTOR" and the Z-axis or its projection and the X-axis.
But the are the angles between the "POSITION" of the "Vector" and those axes. Actually here we are dealing with Vectors which are not that free in space ( Their position should be specified).
For example E(0,0,0)= 3 i + 4 j + 5 k , has a different "spherical" representation at points (0,0,0) and (1,0,0) and so on. —Preceding unsigned comment added by 118.100.167.123 ( talk) 10:25, 24 June 2010 (UTC)
Currently the text includes:
But it is unclear what the difference is between (for example), and . Presumably , then is ?
Even if the symbols seem trivial, it would be good to define them. Thanks!