Results for 520s BC
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Sci & Tech Chronology: 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 science

Pythagoras recognizes that Earth is a sphere. See also 550 bce Communication.

Physics

Pythagoras 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.


 
 
Wikipedia: 520s BC
Millennia: 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 - State leaders - Sovereign states
Establishments - Disestablishments


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Sci & Tech Chronology. 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.  Read more
Wikipedia. This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "520s BC" Read more

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