Intro (Album Version)-Calle 13

[00:00.533]13、Archimedes and the Gold Crown [00:02.983]Archimedes was a famous Greek scientist. [00:04.833]He is regarded as one of the leading scientists in classical era. [00:10.184]He was also a great inventor [00:12.584]and is given credit for many inventions and discoveries. [00:15.735]One of his best-known contributions to science is Archimedes ’principle. [00:21.35]There ’s an interesting story behind it. [00:23.335]The tale goes as follows. [00:25.288]Over two thousand years ago, [00:26.989]on the island of Sicily lived a rich king called Heron. [00:31.659]The king had a golden crown which was supposed to be made of pure gold. [00:36.661]But the king had a suspicion that the crown contained some cheaper metals like silver. [00:40.668]To prove his suspicion, [00:43.930]the king asked Archimedes to check the golden crown to see [00:46.993]if it was really made of pure gold, [00:49.395]but the crown could not be harmed or damaged in any way. [00:53.245]As Archimedes contemplated this difficult problem in his house, [00:57.197]his servant prepared a bath for him. [00:59.748]The bathtub was filled with water to the very brim [01:03.300]and Archimedes stepped into his bath. [01:06.150]As he sat down into the tub fully, [01:08.751]he noticed water spilling over the edge of the tub. [01:12.351]He suddenly discovered the relation between the water [01:15.204]that fallen out and the weight of his body, [01:18.157]and knew the method to solve the crown problem. [01:21.359]Archimedes was so excited with his discovery [01:23.859]that he jumped out of bath and ran naked into the street, [01:27.812]yelling “Eureka!”（Greek word for “I ’ve found it!”） [01:32.514]Archimedes realized that [01:33.815]his body occupying space in the tub had displaced its own weight of water from the bath. [01:40.615]All he had to do is put the gold crown into a vessel with water to the very brim. [01:46.716]If the overflow of water was equal to the volume of an equal mass of pure gold, [01:52.121]the crown would be made of pure gold. [01:54.171]If not,the crown might contain some cheaper,materials. [01:58.371]And after the experiment, [01:59.374]it was clear that the crown contained some cheaper metals. [02:03.282]This is where Archimedes ’Principle comes from.