Rayleigh distance Rayleigh distance Rayleigh distance in optics is the axial distance from a radiating aperture to a point at which the path difference between the axial ray and an edge ray is λ / 4. An approximation of the Rayleigh Distance is formula_1, in which Z is the Rayleigh distance, D is the aperture of radiation, λ the wavelength. This approximation can be derived as follows. Consider a right angled triangle with sides adjacent formula_2, opposite formula_3and hypotenuse formula_4. According to Pythagorean theorem, formula_5. Rearranging, and simplifying formula_6 The constant termformula_7 can be neglected. In antenna applications, the Rayleigh distance is
A Wave, a WAC and a Marine no idea what I wanted to do. But he put up the money and we decided on the crazy story "A Wave, a WAC and a Marine"." Karlson called the movie "probably the worst picture ever made... It was a nothing picture, but I was lucky because it was for Monogram and they didn't understand how bad it was because they had never made anything that was any good." However it did launch Karlson's directing career. A Wave, a WAC and a Marine A WAVE, a WAC and a Marine is an American 1944 musical comedy film directed by Phil