Present
By the end of the 20th century, classical mechanics in physics was no longer an independent theory. Along with classical electromagnetism, it has become imbedded in relativistic quantum mechanics or quantum field theory. It defines the non-relativistic, non-quantum mechanical limit for massive particles.
Classical mechanics has also been a source of inspiration for mathematicians. The realization that the phase space in classical mechanics admits a natural description as a symplectic manifold (indeed a cotangent bundle in most cases of physical interest), and symplectic topology, which can be thought of as the study of global issues of Hamiltonian mechanics, has been a fertile area of mathematics research since the 1980s.
Read more about this topic: History Of Classical Mechanics
Famous quotes containing the word present:
“At present our only true names are nicknames.”
—Henry David Thoreau (1817–1862)
“No people can more exactly interpret the inmost meaning of the present situation in Ireland than the American Negro. The scheme is simple. You knock a man down and then have him arrested for assault. You kill a man and then hang the corpse.”
—W.E.B. (William Edward Burghardt)
“Absent in body, but present in spirit.”
—Bible: New Testament St. Paul, in 1 Corinthians, 5:3.