Time is the clock of causality (Latin causa, “cause”).To the cause we conclude by the effect.What happens in between is time. The Special Theory of Relativity has shown us that this time is perceived differently from the observer’s point of view. Cause and effect can be effected from one location as at the same time and from another location a noticeable time difference is noticeable.Time passesdifferently.However, causality always persists.
The easiest way to do this is to spread light.The light beam only transports the effect.The following interaction only happens on sluggish objects.These are objects that are subject to gravity, and thus pretty much everything we don’t call a vacuum.A dark object, for example, will partly absorb the light (interaction = radiateheat) and partly reflect light on our retina (interaction = vision).Every distance between the interactions always happens in a vacuum with the fastest known effect transport speed 3*10×8 m/s.
With the length measure light year (orshorter units) is a good understanding. The moon is a good second of light away. The distance to Mars is already about 167 light seconds at a short distance. Any information between the two plants has at least the same value as latency. This means that their effects for this period of time have already been irrevocably felt on the spot. Visually, it looks like the information is just arriving too late. In fact, depending on increasing distance, we communicate more and more deeply with the past.
Since light (or radio waves) can orbit the Earth about 7times in one second, the time differences as humans on our planet are hardly noticeable.For thought experiments, the Lorentz factor and inertial systems (= theoretical force-free reference systems/rooms) help.The works of Hendrik Antoon Lorentz are the basis of the special theory of relativity.The formula for this is mathematically relatively easy to understand = 1/(1- (v/c))-2) . The physical effects of time dilation or the inverse length contraction have it all!Incredible to bring a fundamental description of our world into such a compact formula. It was he who used the findings of the Michelson-Morley experiment for his calculations.Michelson and Morley had apparently unsuccessfully always measured the same speed of light.As a result, the postulated aether wind could not be confirmed as a transport medium for light.
What followed answered the second question.The gravity of each object changes time. Albert Einstein showed this through his 2nd stroke of genius: The General Theory of Relativity.Both theories fit together perfectly. This also refuted the theory of an aether.Gravity is described in the general theory of relativity with the curvature of space.Comparable to the resulting additional water surface in a water vortex, there is additionalspace.This resulting space is not visually visible, as the light pathsalso adapt.The result is gravity itself.The more mass accumulates there, the more force its gravity has. In stars (like our sun), this enormous force creates the fusion of atoms.This fusion releases photons (= quantumobject, which describes the interaction of light as wave/particle).Once at the surface, the path begins again as a light beam in the form of an electromagnetic wave.
Gravity as a basic force has an infinitely wide effect and thus shapes space. Electromagnetism as another basic force (symbolized by light) transports its energy through space.Only through the interactions can we measure. We feel this measurement as our time.
Wikipedia Theory of Relativity, Causality, Lorenz Factor, Light Year,