Disturbances within the Earth's interior, which is in a constant state of motion, result in the release of energy in packets known as seismic waves. The area of geophysics known as seismology, is the study of these waves and their effects, which can often be devastating when they manifest in the form of earthquakes. The earthquakes not only take human lives and destroy buildings, but also produce side effects, most often in the form of tsunamis. Using seismographs and seismometers, seismologists study earthquakes and other seismic phenomena, including volcanoes, and even explosions resulting from nuclear tests. They measure earthquakes according to their magnitude or energy, as well as their human intensity or impact.
A famous Greek philosopher and mathematician, Thales of Miletus is known for being the founder of Miletus' School to which other famous representatives such as Anaximenes and Anaximander belonged. He was considered in antiquity as one of the Seven Wise Men of Greece. He was one of the first scholars to transcend the mythological approach that characterized Greek philosophy in the ancient centuries.
Alexander the Third of Macedonia, better known in the world as Alexander the Great, was a Macedonian king from 336 B.C. until the day he died. A man of great intellectual and military training by Aristotle. Dedicated to imposing authority he possessed before the Macedonian people, who, when Philip died, took advantage of the situation and made a whole revolution. The mark that Alexander the Great left throughout history is absolutely incredible, taking into account his heroic achievements and great personality. His words, always correct, made him grow in such a way that he was even able to move entire armies to satisfy his ambition. Conqueror of territories, he was in charge of spreading Greek culture and fusing cultures, he implanted language, art, politics and religion, in other words, he changed the whole world in his time.
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