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:
“Heav’n from all creatures, hides the book of Fate,
All but the page prescrib’d, their present state:”
—Alexander Pope (1688–1744)
“The salt person and blasted place
I furnish with the meat of a fable;
If the dead starve, their stomachs turn to tumble
An upright man in the antipodes
Or spray-based and rock-chested sea:
Over the past table I repeat this present grace.”
—Dylan Thomas (1914–1953)
“When winter snows upon thy sable hairs,
And frost of age hath nipped thy beauties near;
When dark shall seem thy day that never clears,
And all lies withered that was held so dear,
Then take this picture which I here present thee,
Limned with a pencil not all unworthy;”
—Samuel Daniel (1562–1619)