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If two observers AT EXACTLY THE SAME MOMENT will measure the altitude angle of the Sun above the horizon, then you can calculate the size of the Earth.
If it exists it is not known by most observers.
In a short answer, no. There are no known examples of time moving backwards, and no scientific theories supporting the organized reversal of time. Einstein's theory of relativity predicts time can progress at different rates for different observers, depending upon the differential relativistic speed of the observers, and this difference in the progression time has been confirmed experimentally. But even in those confirmed cases, time always moves forwards for all observers, it just moves forwards faster for some observers than for others.
It can happen at any time. Though its visibility depends on the observers location.
In order to minimize errors and confirm the results.
The ISBN of The Observers is 0312930747.
The Observers has 281 pages.
If two observers AT EXACTLY THE SAME MOMENT will measure the altitude angle of the Sun above the horizon, then you can calculate the size of the Earth.
One observes a physical property.
Testing, comparing and deciding which rocks and sticks will do the job needed done.Science in the modern sense did not exist then. However early man and their prehuman ancestors were keen observers and learned rapidly from mistakes.
The Observers - 2011 I was released on: USA: 10 May 2012
refers to the tendency of observers to see what they expect to see.
The commander and the UPL will brief observers on their duties and responsibilities.
United Nations Mission of Observers in Tajikistan was created in 1994.
American Association of Variable Star Observers was created in 1911.
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United Nations Mission of Observers in Tajikistan ended in 2000.