Exchange force

In physics the term exchange force has been used to describe two distinct concepts which should not be confused. In physics the term exchange force has been used to describe two distinct concepts which should not be confused. The preferred meaning of exchange force is in particle physics, where it denotes a force produced by the exchange of force carrier particles, such as the electromagnetic force produced by the exchange of photons between electrons and the strong force produced by the exchange of gluons between quarks. The idea of an exchange force implies a continuous exchange of particles which accompany the interaction and transmit the force, a process that receives its operational justification through the Heisenberg uncertainty principle. You can think about forces as being analogous to the following situation:Two people are standing on an ice pond. One person moves their arm and is pushed backwards; a moment later the other person grabs at an invisible object and is driven backwards (repulsed). Even though you cannot see a basketball, you can assume that one person threw a basketball to the other person because you see its effect on the people.ANIMATIONAnother crude analogy which is often used to explain attraction instead of repulsion is two people on an ice pond throwing boomerangs at each other. The boomerang is thrown away from the catcher but it circles to the catcher in the thrower's direction, both the thrower and the catcher are impulsed toward each other by the throwing and catching actions.