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Follow us on facebook: / curiosityth instagram: / ekarajpkk Save in case the channel needs to find each other. Order Ophtus glasses at / ophtus Don't forget to use the code SONGSAI to get a 100 baht discount. Friendly Gym Fitness Bangplee / friendlygymsmt9 Contact for work: [email protected] ------------------------------------------------------------------- "Your mathematical method is correct, but your physics is no good." These were the words of Albert Einstein, speaking at a physics conference in 1927 with a Belgian physicist named Georges Lematre. To summarize briefly, Lematre studied Einstein's general theory of relativity and found that, according to the theory of relativity, our entire universe was once very small, a tiny point called a primeval atom before it expanded into the huge universe it is today. Today, we know that the universe is really expanding from Hubble's observations and many other evidences. But at that time, there was no such evidence. Einstein still believed that the universe was eternal, there were no sixes, no expansion. So he criticized Lematre's theory of the expanding universe as ignorant of physics. In fact, Lematre was not the first person to think about the expansion of the universe. In 1921, a Russian mathematician named Alexander Friedmann, who also studied Einstein's general theory of relativity, had already talked about the theory of the expansion of the universe. But of course, Einstein, the creator of the theory of relativity, also objected to Friedmann's idea. But in the end, we know that both Lematre and Friedmann were right. So Einstein had to issue an apology and praise the ideas of both of them. And how does this lead us to the theory of the edge of the universe? Let's follow. ------------------------------------------------------------------- Reference The Hidden Reality: Parallel Universes and the Deep Laws of the Cosmos https://www.amazon.com/Hidden-Reality...