Quaternions and spatial rotation of a circle representing a particular rotation angle will be half of the angle represented by that rotation, since as the point is moved from the north to south pole, the latitude ranges from zero to 180 degrees, while the angle of rotation ranges from 0 to 360 degrees. (the "longitude" of a point then represents a particular axis of rotation.) Note however that this set of rotations is not closed under composition. Two successive rotations with axes in the "xy" plane will not necessarily give a rotation whose axis lies in the "xy" plane, and thus cannot be represented
Silk Degrees Silk Degrees Silk Degrees is the seventh album by Boz Scaggs, released on Columbia Records in 1976. The album peaked at No. 2 and spent 115 weeks on the "Billboard" 200. It has been certified five times platinum by the RIAA and remains Scaggs's best selling album. "Silk Degrees" spawned four singles. "It's Over", "Lowdown", and "Lido Shuffle" made the Top 40, while "What Can I Say" peaked at No. 42. The album was recorded at Davlen Sound Studios and Hollywood Sound Studios in Los Angeles. Among the accompanying musicians, David Paich, Jeff Porcaro, and David Hungate became members of