This expression gives evidence of the implication in the reality of an unspeakable : the time composed of durations these intervals which are not space but of transcendent order.
This one should have enabled recognition of a beyond the world, rich of post-mortem expectations ; but that has been inverse.
Space and time are nevertheless, among major stumbling blocks of philosophers and theologians ; every year, dozens books are dedicated to them,
stumbling blocks because numerous problems are always without credible answers, notably :
- why and how, vacuums (for example, intervals between the words) and durations as silences, are they vectors of sense ?,
- what is the domain (space, field) of virtualities where are the potentialities ?, think to the universal forces recognized by the scientists,
- what can we say of the beyond the reality, expressed by abstraction's domain, where are elaborated the virtual imagings, the concepts, the ideas, ..., which are our references ?
Henceforth, scientists consider time and space as two interdependent entities, the space being for Einstein, a fact that we cannot represent.
More exactly, for the scientists, the spatial intervals (the physical spaces) and durations that constitute time, appear in interaction, when they are apprehended by an observer.
Consequently, when we discuss of the relativity's phenomenon, we must not forget the underlying question :
what is the creative entity, obviously of transcendent order, who apprehends ?
You conceive it easily, answer necessitate more than physico-mathematical formulas !
Nevertheless, what works have led to concept of space-time, and what is its meaning for the one who researchs the primordial causes ?
Michelson (1852, 1931) with famous experiments, showed that the photons's speed (the light's speed)), is the same in all the directions in spite of earth's rotation ; of this fact, Michelson concludes that the laws to add up speeds and to add up durations are specific.
At the same time, Lorentz (1853, 1928) who was analyzing phenomena's perception in two reference systems which move with different speeds, establishes basic equations which enabled Einstein (1879, 1955) to elaborate his special relativity theory and his general relativity theory.
Let's quote briefly their reasonings which reveal moreover, importance (influence) of the abstraction capacities when we want to "understand" world.
Nevertheless, one can "fly over" the mathematical equations which follow, without affecting the commentaries's comprehension that we shall do upon the relativity’s phenomenon, more exactly, upon the relative character of the perceptions and of their interpretations.