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UrielAcosta (talk | contribs) It is important to remember that MOS:NOTETHAT says not to say "it is important to remember that" Tags: Mobile edit Mobile web edit |
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Use of the small angle approximations replaces dimensionless trigonometric functions with angles in radians. In [[dimensional analysis]] on optics equations radians are dimensionless and therefore can be ignored.
A paraxial approximation is also commonly used in [[Physical optics]]. It is used in the derivation of the paraxial wave equation from the homogeneous [[Maxwell's equations]] and, consequently, [[Gaussian beam]] optics.
==References==
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