rotation about a point
31Inversion in a point — In Euclidean geometry, the inversion of a point X in respect to a point P is a point X * such that P is the midpoint of the line segment with endpoints X and X *. In other words, the vector from X to P is the same as the vector from P to X *.The… …
32Apache Point Observatory Lunar Laser-ranging Operation — APOLLO shooting a laser at the Moon. The laser pulse is reflected from the retroreflectors on the Moon (see below) and returned to the telescope. The round trip time tells the distance to the Moon to great accuracy. In this picture the Moon is… …
33Pokémon episodes removed from rotation — There are hundreds of episodes of the Pokémon anime; however, for various reasons, some have been taken out of the rotation of reruns in some countries. Pokémon is aimed at young children, which required some episodes to be altered. However some… …
34Instant centre of rotation — The instant centre of rotation, also called instantaneous centre , for a plane figure moving in a two dimensional plane is a point in its plane around which all other points on the figure, for one instant, are rotating. This point itself is the… …
35Fermat point — In geometry, the first Fermat point, or simply the Fermat point, also called Torricelli point, is the solution to the problem of finding a point F inside a triangle ABC such that the total distance from the three vertices to point F is the… …
36List of character tables for chemically important 3D point groups — This lists the character tables for the more common molecular point groups used in the study of molecular symmetry. These tables are based on the group theoretical treatment of the symmetry operations present in common molecules, and are useful… …
37Absolute rotation — In physics, the consideration of absolute rotation rotation independent of any external reference is a topic of debate about relativity, cosmology, and the nature of physical laws. The question of whether absolute rotation is meaningful is… …
38Lagrangian point — The Lagrangian points (IPA en|ləˈgreɪndʒiən, IPA fr|lagʁɑ̃ʒjɑ̃; also Lagrange point, L point, or libration point), are the five positions in an orbital configuration where a small object affected only by gravity can theoretically be stationary… …
39Heavy Rotation — Esta página o sección está siendo traducida del idioma inglés a partir del artículo Heavy Rotation, razón por la cual puede haber lagunas de contenidos, errores sintácticos o escritos sin traducir. Puedes colaborar con Wikipedia continua …
40Stellar rotation — is the angular motion of a star about its axis. The rate of rotation can be measured from the spectrum of the star, or by timing the movements of active features on the surface.The rotation of a star produces an equatorial bulge due to… …
