Centenary of Einstein's Theory of Relativity

These days mark the celebration of the centenary of Einstein's General Theory of Relativity, a hypothesis that forever changed the boundaries of human knowledge and altered the scientific understanding of space and time. According to the New York Times, Albert Einstein, born in Germany in 1879, presented the General Theory of Relativity to a group of scientists at the Prussian Academy of Sciences in 1915, one hundred years ago. The General Theory of Relativity is a set of mathematical equations that describe the phenomenon of space-time and gravity, which until then had been explained by Newtonian mechanical formulas or 'force', in terms of curvature. Pedro Ferreira, author of the book 'The Perfect Theory', which discusses Einstein's theory of relativity, states that this theory is a simple yet delicate and beautiful set of equations. If you can solve them, you arrive at extraordinary things. But what emerged from the theory of relativity? 1. Black Holes One of the strangest and first things that emerged from the theory of relativity was the issue of black holes. A black hole is a region of space-time where mass is extremely compressed. The existence of black holes is predicted by Albert Einstein's theory of relativity. This theory predicts that a sufficiently compressed mass can cause the shape and curvature of space-time, leading to the formation of a black hole. According to Ferreira, in 1915, the existence of black holes was first concluded by a German soldier fighting on the front lines of World War I. This soldier, named Karl Schwarzschild, sent his conclusion to Einstein. However, Einstein, while admiring the equation, did not believe in the existence of black holes. Karl Schwarzschild died in 1916, and black holes were not believed in until a decade after Einstein's death; however, they have since become the subject of many stories and science fiction films. 2. The Big Bang Theory The equations of the theory of relativity indicate that the universe is expanding. But if time were to reverse and the universe became smaller and smaller, where would we end up? If we go back in time, we reach a point in the past where known physical laws lose their effectiveness, known as a singularity. This point is the origin of the universe. Again, like the issue of black holes, Einstein resisted accepting the Big Bang hypothesis until data from the Hubble telescope showed that our universe is indeed expanding. 3. GPS Devices When you use your car's GPS or smartphone maps, you probably don't think about Einstein's theory of relativity. However, it is interesting that if these systems do not take relativity into account, they will have an error of 10 kilometers a day and will soon become useless. 4. Wormholes Wormholes are bridge-like space-time structures that connect two separate regions of space-time or two separate space-times. Wormholes shorten and ease the time required to travel from one point to another. Einstein proved that the universe is not just three-dimensional; time is the fourth dimension of the universe we know. In this four-dimensional space-time, wormholes can be a hole to another universe or another area of this universe. 5. Gravitational Lensing The theory of relativity states that a mass with very high density, like the sun, can change the shape of light around it and bend the path of light. According to general relativity, mass can curve space-time, thus creating a gravitational field that can deflect light. Gravitational lensing can provide information about the intermediate object (lens), including its mass, allowing scientists to study very distant stars and planets. In this context, the 2015 Nobel Prize in Physics was awarded to Japanese and Canadian atomic scientists. Is the Big Bang theory being challenged? The changing game of 'proxies'; war against the people in the streets of Iran. First paragraph; the responsibility of the opposition and the possibility of radicalizing Iranian society. The death of the last Mossad representative in Tehran amid the Iran crisis. Trump: I hope there is no need for further action regarding Iran; they were killing people indiscriminately. The shadow of war over Tehran; 'Trump is looking for decisive military options against Iran.' Trump says if the Islamic Republic assassinates him, 'it will be wiped off the face of the earth.' A senior U.S. official: The Trump administration is closely monitoring the case of Reza Valizadeh. The death of the last Mossad representative in Tehran amid the Iran crisis.