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Timeline of electromagnetism and classical optics : ウィキペディア英語版 | Timeline of electromagnetism and classical optics
Timeline of electromagnetism and classical optics ==Early developments==
*424 BC Aristophanes "lens" is a glass globe filled with water.(Seneca says that it can be used to read letters ''no matter how small or dim'')〔''The history of the telescope'' by Henry C. King, Harold Spencer Jones Publisher Courier Dover Publications, 2003 Pg 25 ISBN 0-486-43265-3, ISBN 978-0-486-43265-6〕 *4th century BC Mo Di first mentions the camera obscura, a pin-hole camera. *3rd century BC Euclid is the first to write about reflection and refraction and notes that light travels in straight lines〔 * 130 AD. — Claudius Ptolemy (in his work ''Optics'') wrote about the properties of light including: reflection, refraction, and color and tabulated angles of refraction for several media * 1021 — Ibn al-Haytham (Alhazen) writes the ''Book of Optics'', studying vision. * 1088 — Shen Kuo first recognizes magnetic declination. * 1187 — Alexander Neckham is first in Europe to describe the magnetic compass and its use in navigation. * 1269 — Pierre de Maricourt describes magnetic poles and remarks on the nonexistence of isolated magnetic poles * 1305 — Dietrich von Freiberg uses crystalline spheres and flasks filled with water to study the reflection and refraction in raindrops that leads to primary and secondary rainbows * 1550 — Gerolamo Cardano writes about electricity in ''De Subtilitate'' distinguishing, perhaps for the first time, between electrical and magnetic forces.
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