https://doi.org/10.1351/goldbook.M03919
The @[email protected] of electromagnetic radiation by spherical particles of any size \(r\), relative to the @[email protected], \(\lambda \). Since the cases \(r\ll \lambda \) and \(r\gg \lambda \) are covered by Rayleigh (dipole) @[email protected] and geometric @[email protected] theories, respectively, Mie @[email protected] often refers to the case of \(r\approx \lambda \).