Observatory at Samarkand, ca. 1450 Al Battani measures tilt of ecliptic to within one hundredth of a degree: ca. 900 A.D. - PowerPoint PPT Presentation

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Observatory at Samarkand, ca. 1450 Al Battani measures tilt of ecliptic to within one hundredth of a degree: ca. 900 A.D.

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1450. Al Battani measures tilt of ecliptic to within one hundredth of a degree: ca. 900 A.D. ... 1600: Tycho Brahe and his observatory. What is an ellipse? ... – PowerPoint PPT presentation

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Title: Observatory at Samarkand, ca. 1450 Al Battani measures tilt of ecliptic to within one hundredth of a degree: ca. 900 A.D.


1
Observatory at Samarkand, ca. 1450Al Battani
measures tilt of ecliptic to within one hundredth
of a degree ca. 900 A.D.
2
  • ca. 1600 Tycho Brahe and his observatory

3
What is an ellipse?
4
Ellipses of same major axis but different
eccentricity
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