What about the accuracy of this?
Thanks. Could you tell me about the following two paragraphs? I know they may not go in depth enough to fully explain things. And some things may be over generalized, but is there anything about the following two paragraphs that are simply false? Thanks again.
“Isn’t a day the same on the moon as it is on earth?” According to Albert Einstein’s theory it is not the same. When you compare the time flow at two different places (in this example the Earth and the moon) there will often be a difference, albeit usually an extremely small difference. The difference in time flow between two places, if there is a difference, depends on how much faster something is traveling, and how much more gravity there is (which depends on how big a planet or star is. A bigger planet or star will have more gravity.) Now the speed of the Earth and of the moon are pretty close, and compared to the rest of the universe they are also similar in size. Because the moon and the Earth are close in size and speed, the difference in time flow on the moon compared with Earth is only a tiny fraction of a second every day. Now with all the comparative differences in time flow throughout the universe, it would be convenient if there were a universal time, or clock. Fortunately there is. After the big bang the flow of time was the same everywhere (since after all, “everywhere” was a relatively small area at the time). Ever since then time flow has often been different when comparing one place to another. But when time flow was the same everywhere, an echo was created. That echo wasn’t sound. It is electromagnetic energy, like radio waves. We now call that echo Cosmic Background Radiation (or CBR for short). CBR still echoes throughout the universe today, and has been studied at universities around the world.
According to Einstein’s theory, when radio waves travel from one place to another, and both places have a comparatively different time flow, the frequency will appear to be different at one place than at the other. When measured, the frequency of CBR appears to be lower, since the flow of time in this solar system today is faster when compared to the flow of time just after the big bang. Time flows faster here today than it did after the big bang, because our solar system has such little gravity, and during the big bang the whole universe was packed into the same relatively small area, making for an enormous amount of gravity. Using simple algebra, the difference in the original frequency of CBR, and the frequency that it appears to be, can be used to calculate just how much the flow of time here on Earth today differs from that of the universe just after the big bang. By knowing how comparatively different the flow of time is between the Earth today, and the universe just after the big bang, we can make the necessary transition from Earth time to universal time, or from universal time to Earth time. We could calculate, somewhat accurately, how many seconds according to the “universal clock” would be equivalent to a year (for example) according to the “earth clock.”
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