If two objects in space are able to communicate through a "signal" (mechanical or luminous), we say that they are in casual contact, meaning that one can cause an effect on the other, as a consequence of the signal it sends to it (for example a mechanical perturbation, or a luminous irradiation).
(two objects in space; are; able to communicate through a "signal" (mechanical or luminous) (two objects in space; to communicate; ) (it; sends; to it; a mechanical perturbation, or a luminous irradiation) (we; say; that they are in casual contact, meaning that one can cause an effect on the other, as a consequence of the signal) Context(we say,List([93, 99))):(they; are; in casual contact)
we say,List([93, 99))
two objects in space two objects in space it we they
are to communicate sends say are
able to communicate through a "signal" (mechanical or luminous
to it a mechanical perturbation, or a luminous irradiation
that they are in casual contact, meaning that one can cause an effect on the other, as a consequence of the signal
in casual contact