FACTOID #151: The five countries with the highest coffee consumption are also the five countries whose citizens trust one another the most. Coincidence? Probably.
Cayley is a small lunar impact crater that is located in a basaltic-lava-flooded region to the west of Mare Tranquillitatis. It lies to the northwest of the smaller De Morgan and the larger D'Arrest craters. West and slightly north of the crater is Whewell crater, a crater of about the same dimensions. To the north is a linear rille designated Rima Ariadaeus, which follows a course to the east-southeast.
This is a circular, bowl-shaped formation with a small interior floor at the mid-point. (Small being relative to the overall diameter, as it occupies about one-fourth the total cross-section.) The sloping interior walls are relatively light in hue, having a higher albedo as the surrounding terrain. However it is not nearly as bright as the slightly larger Dionysius crater to the east-southeast, and lacks a ray system.
Cayley is a small lunar impact crater that is located in a basaltic-lava-flooded region to the west of Mare Tranquillitatis.
The terrain surrounding the crater is somewhat similar to the lunar mares, but has a slightly higher albedo and is overlapped at the eastern edge by the Mare Tranquillitatis.
A wealthy landowner, Cayley is considered the father of aerial navigation and a pioneer in the science of aerodynamics.
He gives the 'Cayley tables' of some special permutation groups but, much more significantly for the introduction of the abstract group concept, he realised that matrices and quaternions were groups.
Cayley developed the theory of algebraic invariance, and his development of n-dimensional geometry has been applied in physics to the study of the space-time continuum.
Arthur Cayley was elected to the Royal Society of London in 1852.
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