- #1
emanaly
- 33
- 0
What is non geodesic motion?
I'm guessing you meant either "geodesic motion is motion with no outside forces" or else "non-geodesic motion is motion with outside forces"?HallsofIvy said:non-geodesic motion is motion with no outside forces.
Chris Hillman said:Just to elaborate quickly on what HallsofIvy said: in general relativity, the world line of a (nonspinning) test particle is a geodesic, i.e. a curve with zero path curvature. More generally, the path curvature at any event on some world line is just the magnitude of acceleration experienced by the corresponding particle. For example, a charged particle in an "electrovacuum solution" of the Einstein field equation (EFE) will experience a nonzero Lorentz force, whose magnitude (at each event on the world line of the particle) agrees with the path curvature.
emanaly said:Why spinning particles don't have a geodesic path?
Non-geodesic motion refers to the motion of an object that does not follow the shortest path between two points on a curved surface. This is due to the influence of external forces, such as gravity or electromagnetic forces.
Geodesic motion is the motion of an object that follows the shortest path between two points on a curved surface, without the influence of external forces. Non-geodesic motion, on the other hand, is influenced by external forces and does not follow the shortest path.
Some examples of non-geodesic motion include the orbit of a satellite around a planet, the motion of a pendulum, and the trajectory of a ball thrown through the air.
Understanding non-geodesic motion is important in various fields such as physics, engineering, and astronomy. It helps us predict and analyze the behavior of objects in motion, and allows us to make accurate calculations and design efficient systems.
Non-geodesic motion plays a significant role in our daily lives, from the motion of vehicles on curved roads to the trajectory of a thrown ball. It also affects the functioning of devices such as GPS systems and satellite communication, making it essential for modern technology.