|| Back to Lectures || A. Introduction) || B. Measurements || C. Motion of sky || D. Motion of Sun || E. Moon || F.History || G. Motion || H. Newton's laws || I. Gravity || J. Work-Energy || K. Electricity-Waves || L. Gas laws || The End ||
Astronomy References 1) Encyclopedia 2) Glossary 3) Glossary 4) Astronomy 5) Physical Science
Illustrations(1) Converts between different units. Unit
conversions (2)
Define astronomical distances in light years, astronomical unit
and parsec, Astronomical
Unit (3) Arc degree, arc minutes and
arc second are explained Angular
distances , Angular
speed (4) Use your hand to measure the
Angular
size (5) The Big Dipper and Polaris North
Circumpolar Stars (6)
The relative motion of stars are explained
Relative
motion of stars (7)
How do we find the distances to stars?
Distance
to stars (8)
parallax are explained (a) Parallax (b) Parallax (c) Best. Parallax
animation (d) Measure
the parallaxes of a few stars (e) Parallax