Mechanics of planar particle motionThis article describes a particle in planar motion when observed from non-inertial reference frames. The most famous examples of planar motion are related to the motion of two spheres that are gravitationally attracted to one another, and the generalization of this problem to planetary motion. See centrifugal force, two-body problem, orbit and Kepler's laws of planetary motion. These problems fall in the general field of analytical dynamics, determining orbits from the given force laws.
Motion simulatorA motion simulator or motion platform is a mechanism that creates the feelings of being in a real motion environment. In a simulator, the movement is synchronised with a visual display of the outside world (OTW) scene. Motion platforms can provide movement in all of the six degrees of freedom (DOF) that can be experienced by an object that is free to move, such as an aircraft or spacecraft:. These are the three rotational degrees of freedom (roll, pitch, yaw) and three translational or linear degrees of freedom (surge, heave, sway).
Sens communLe sens commun est une notion étudiée dans les sciences sociales. Le concept se rapporte à une forme de connaissance regroupant les savoirs largement diffusés dans une culture donnée : normes, valeurs et associations symboliques. Le sens commun fait référence à des opinions, des croyances, et des perceptions largement partagées au sein d'une organisation sociale donnée. C'est ce que l'on nomme parfois familièrement le « gros bon sens ». La notion a évolué dans le temps.
