In compound time, the second number of the ratio will either be a three, a six or a nine. The first number of the ratio follows the same rules as in simple time. The only exception is the 2:3 ratio where two notes fall within the space of three. (Select Compound Time Tuplets.)
The Laplace azimuth (geodetic azimuth) of a point in space is equal to the dihedral angle between the plane of the geodetic meridian of the place of observation and the plane that passes through the normal to the surface of the reference ellipsoid at this place and the observed point.aplace Azimuth. the geodetic azimuth A of the direction to an observed point obtained from its astronomical azimuth a corrected by taking into account the effect of the deviation of the vertical at the place of observation.
In the framework of the gravito-electromagnetic analogy, the geodetic effect arises partly as a spin-orbit interaction between the spin of the test body (the gyroscope in the case of GP-B) and the mass current of the central body (the earth).