Atomic, molecular, and optical physics the origin of the index of refraction treated an electron in an atomic system classically according to the model of Paul Drude and Hendrik Lorentz. The theory was developed to attempt to provide an origin for the wavelength-dependent refractive index "n" of a material. In this model, incident electromagnetic waves forced an electron bound to an atom to oscillate. The amplitude of the oscillation would then have a relationship to the frequency of the incident electromagnetic wave and the resonant frequencies of the oscillator. The superposition of these emitted waves from many oscillators would then lead to a wave which
What Greater Love What Greater Love "What Greater Love" was a top ten hit in New Zealand for singer Nash Chase in 1970. On the week ending with 5 September 1970, it was reported by the "Billboard" magazine that "What Greater Love" was in the New Zealand charts at position 10. The single backed with "Raindrops Keep Falling On My Head" was released on the Ode label. By 27 July 1970, the single had entered the NZ charts at no. 20. By 31 August, it had climbed from no. 17 to no. 10. In 1970, Chase was a newcomer to the pop scene.