My references are to reality
and I am of the opinion that fictitious
forces do not
come under that category.
So if something cannot be logically identified or physically determined it comes under the heading of a 'fictitious force'? It was a fictitious force that many years ago exchanged my tooth for a dime.
The concept of a 'fictitious force' is in my opinion a desperate grasping at straws analogous to the 'parallel universes' escape-clause, suitably impossible-to-disprove, concept.
People who believe in God are criticized by others for their faith in a 'fictitious force' yet apparently some people are apparently of the opinion that a non-material 'force' can result in an equal and opposite reaction provided
the results supply the solution they seek.
Einstein indicated that clock A will lag behind B due to the fact that, whilst it is moving, clock A 'goes more slowly' (ticks over at a slower rate) than clock B.
It has been pointed out in relation to my previous thread in this forum that there could
be third observer, C, relative to whom A and B were initially moving at v. When A accelerates he, from C's point of view, decelerates
and comes to a stop in C's reference frame (thus ticks over at the same rate as C's clock) whereas B keeps moving relative to C at v thus from C's
point of view clock B is ticking over at a slower rate than his own clock ergo also at a slower rate than clock A so when A 'accelerates' back to B's location (in B's reference frame, decelerates and comes to a stop alongside B) it is, in C's opinion, clock B that will lag behind A.
C moves to B's location and comes to a stop alongside A and
B and finds, much to his consternation, that B does not
lag behind A as indicated by his 'calculations' or 'determinations' or 'predictions' but that A lags behind B