520s BC
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In the year 520 bce
Astronomy
Pythagoras of Samos [b. Samos (Greek Aegean island), c. 569 bce, d. Metapontum (Italy) or Croton (Crotone, Italy), c. 480 bce] recognizes that the morning and evening stars are the same heavenly body, the planet Venus. He proposes that the Sun, Moon, planets, and stars move in paths around Earth, which is suspended in space. See also 450 bce Astronomy. (See essay.)
Earth sciencePythagoras recognizes that Earth is a sphere. See also 550 bce Communication.
PhysicsPythagoras discovers that musical harmony can be explained with number (for example, doubling the length of a plucked string produces a note one octave lower). See also 500 bce Construction.
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520s BC
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This article does not cite any references or sources. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed. (December 2009) |
| Millennium: | 1st millennium BC |
| Centuries: | 7th century BC – 6th century BC – 5th century BC |
| Decades: | 550s BC 540s BC 530s BC – 520s BC – 510s BC 500s BC 490s BC |
| Years: | 529 BC 528 BC 527 BC 526 BC 525 BC 524 BC 523 BC 522 BC 521 BC 520 BC |
| Categories: | Births – Deaths – Architecture Establishments – Disestablishments |
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Events
- 529 BC—Cambyses II started to rule. He is son of Cyrus II. He conquered Egypt and Cyprus.
- 528 BC—Gautama Buddha attained Enlightenment, and began his ministry.
- 527 BC—Pisistratus a tyrant of Athens dies: his son Hippias inherits his power.
- 526 BC—Psammetichus III succeeds Amasis II as king of Egypt.
- 526 BC—King Liao of Wu ascends to power in the State of Wu in China during the Zhou Dynasty.
- 525 BC—Cambyses II, ruler of Persia, conquers Egypt, defeating Psammetichus III. This is considered the end of the Twenty-sixth Dynasty, and the start of the Persian Twenty-seventh Dynasty.
- c. 525 BC—Coins started to have an image on two sides.
- 522 BC—Bardiya succeeds Cambyses II as ruler of Persia.
- 522 BC—Babylon rebels against Persian rule.
- 522 BC—Darius I succeeds Bardiya as ruler of Persia. He is the son of a government official.
- 521 BC—The Babylonian rebellion against Persian rule is suppressed.
- 520 BC—Zhou dao wang becomes King of the Zhou Dynasty of China but dies before the end of the year.
- 520 BC—Cleomenes I succeeds Anaxandridas as king of Sparta. (approximate date).
- c. 520 BC—Kore, from Chios(?), is made. It is now at Acropolis Museum, Athens.
- c. 520 BC—Sarcophagus, from Cerveteri is made. It is now kept at Museo Nazionale di Villa Giulia, Rome (approximate date).
- 520 BC–510 BC—The Priam Painter makes Women at a fountain house, black-figure decoration on a hydria. It is now at Museum of Fine Arts, Boston.
Significant people
Births
- 521 BC—Leonidas I. King of Sparta
- 525 BC—Aeschylus, author of Greek tragedies (d. 456 BC)
- 522 BC—Pindar, Greek poet
- 520 BC—Panini, Hindu Indian grammarian (d. 460 BC)
Deaths
- July, 529 BC—Cyrus the Great, ruler of ancient Persia
- 527 BC—Mahavira, major Jain reformist (b. 599 BC)
- 527 BC—Peisistratus, Athenian tyrant
- 525 BC—Anaximenes of Miletus, Greek philosopher (b. 585 BC)
- 525 BC—Psammetichus III, the last Pharaoh of the Twenty-sixth Dynasty of Egypt
- 522 BC—Cambyses II, ruler of ancient Persia
- September, 522 BC—Bardiya, ruler of ancient Persia
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Houghton Mifflin Guide to Science & Technology
History of Science and Technology, edited by Bryan Bunch and Alexander Hellemans. Copyright © 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.
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