Hand of whether the three digits of the bird hand involved the same homologous loss of two digits as in the dinosaur hand. The human hand normally has five digits: four fingers plus one thumb; these are often referred to collectively as five fingers, however, whereby the thumb is included as one of the fingers. It has 27 bones, not including the sesamoid bone, the number of which varies between people, 14 of which are the phalanges (proximal, intermediate and distal) of the fingers and thumb. The metacarpal bones connect the fingers and the carpal bones of the wrist. Each human
Normal mode medium determines what would be the interference pattern, thus determines the "ƒ"("x", "y", "z") form of the standing wave. This space-dependence is called a normal mode. Usually, for problems with continuous dependence on ("x", "y", "z") there is no single or finite number of normal modes, but there are infinitely many normal modes. If the problem is bounded (i.e. it is defined on a finite section of space) there are countably many normal modes (usually numbered "n" = 1, 2, 3, ...). If the problem is not bounded, there is a continuous spectrum of normal modes. In any solid at