makes a good clock
Galileo rolled a ball over the edge of a table and recorded its trajectory to study how gravity causes an object to accelerate toward the Earth in a parabolic fashion. He used the assumption that the horizontal motion of a free-falling body is constant as a “top wall clock in pakistan“. It is worth noting that time was not explicitly measured in this experiment. Galileo used the motion of one species to measure the motion of another species.
Newton believed that time is a universal and independent process and that all changes can be objectively measured, but this is difficult to prove. Einstein, with the help of other scientists, proved that time and duration are not absolute, but relative to the observer’s frame of reference. This means that secondary measures such as energy, mass and gravity are also relative.
In his book “The End of Time”, Julian Barber points out that perhaps the measure of change is not time, but the scale of time is change. In other words, a good clock can be defined as one that changes at the same rate according to the general rate of change of state of all matter interactions in the universe.
Two or more processes that change in the environment can be made to correspond to each other in a coordinate system. These processes are simply related to each other, some manifest as rates of change, some as curvature, etc. Time cannot be used directly. Today, the most desirable clocks are those that oscillate and measure their oscillations against some other best wall clocks online in pakistan. However, there is no absolute measure of accuracy.
The only phenomenon that remains constant in any frame of reference is the speed of light in space.
Perhaps light is the ultimate determinant of all other rates of change.
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