Testpartikkelantakelsen
Testpartikkelantakelsen refers to the concept of a test particle in physics. A test particle is an idealized object that is assumed to have negligible mass and charge, such that its presence does not significantly affect the system it is placed in. This simplification allows physicists to study the behavior of fields or other objects without being concerned with the back-reaction of the test particle itself.
The concept is particularly useful in classical mechanics and electromagnetism. For instance, when analyzing the motion
In more advanced theories, such as general relativity, the concept of a test particle is also employed.