Newtonian telescope secondary mirror. This design reduces the size and cost of the telescope with a shorter overall telescope tube length (with the corrector extending the focal length in a "telephoto" type layout) combined with a less costly spherical mirror. Commercially produced versions of this design have been noted to be optically compromised due to the difficulty of producing a correctly shaped sub-aperture corrector in a telescope targeted at the inexpensive end of the telescope market. Newtonian telescope The Newtonian telescope, also called the Newtonian reflector or just the Newtonian, is a type of reflecting telescope invented by the English scientist Sir
Newtonian dynamics configuration manifold formula_18 are not explicit in (). The metric () can be recovered from the kinetic energy formula_50 by means of the formula Newtonian dynamics In physics, the Newtonian dynamics is understood as the dynamics of a particle or a small body according to Newton's laws of motion. Typically, the Newtonian dynamics occurs in a three-dimensional Euclidean space, which is flat. However, in mathematics Newton's laws of motion can be generalized to multidimensional and curved spaces. Often the term Newtonian dynamics is narrowed to Newton's second law formula_1. Let's consider formula_2 particles with masses formula_3 in the regular three-dimensional