31. Root mean square ( RMS ) contrast does not depend on the angular frequency content or the spatial distribution of contrast in the image. 32. Once the frequency relation is formulated in terms of ?, the angular frequency , the problem can be solved with 3 distinct solutions. 33. It is also referred to as "'temporal frequency "', which emphasizes the contrast to spatial frequency and angular frequency . 34. Where " ? " is the angular frequency and "'k "'is the wavevector describing plane wave solutions. 35. Physically, this corresponds to the Bloch vector precessing around \ mathbf { \ hat { n } } with angular frequency 2 \ omega. 36. The width of the bars and their distance apart represent angular frequency , measured in cycles per degree ( cpd or cyc / deg ). 37. So we have included both frequency ? and angular frequency ? to serve an educational purpose, not because we're undecided or careless. 38. For convenience, take " ? " 0 = 1 because the leading order of the solution's angular frequency is 1. 39. A small radial deviation from a circular orbit of radius " r " outer will oscillate in a stable manner with an angular frequency 40. The superscript m is called the "'angular frequency "'and denotes the number of times the Wavefront pattern repeats itself.
