| 21. | The right hand rule relates this direction to the clockwise or counter-clockwise rotation in the plane of the drawing.
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| 22. | Magnetic current ( flowing magnetic monopoles ), M, creates an electric field, E, in accordance with the left-hand rule.
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| 23. | Positive traversal of " ? is then counterclockwise ( right-hand rule with thumb along " z "-axis ).
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| 24. | This is the right-hand rule.
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| 25. | Note that for circular polarization, optical researchers use the opposite right hand rule from the one used by radio engineers.
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| 26. | Still using the left-hand rule the painter now searches for a simple passage ( made by two boundary pixels ).
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| 27. | If both are empty, then the current pixel can be painted and the painter can move following the right-hand rule.
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| 28. | The IAU also uses the right-hand rule to define a " positive pole " for the purpose of determining orientation.
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| 29. | For example, one method would be to compare it to an electromagnet, whose poles can be identified by the right-hand rule.
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| 30. | The helix in the antenna can twist in two possible directions : right-handed or left-handed, as defined by the right-hand rule.
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