Physics
Heliocentric Model of Planetary Motion
In the heliocentric model, the Earth and other planets orbit the Sun. The prograde and retrograde motions are apparent effects due to relative motions of the…
Lecture
Physics
Geocentric Model of Planetary Motion
Prime purpose of this lecture is to present on Geocentric Model of Planetary Motion. Here briefly explains qualitatively the prograde and retrograde motions, and brightness variation. Motion…
Physics
Astronomy and Space Science
Basic purpose of this lecture is to present on Astronomy and Space Science. Here briefly focus on: Astronomy Basics Length, time, angles and Celestial sphere, star maps. Alos…
Physics
Newton’s Law of Motion and Gravity
General purpose of this lecture is to present on Newton’s Law of Motion and Gravity. He invented Calculus as a necessary tool to solve mathematical problems…
Physics
Johannes Kepler’s Law
Johannes Kepler used the precise observational tables of Tycho Brahe to study planetary motion mathematically. He found a consistent description by abandoning both: Circular motion and Uniform…
Physics
Ancient History of Astronomy
Main purpose of this lecture is to present on Ancient History of Astronomy. Astronomy is the oldest of the sciences. When Stoneage humans turned to an agrarian…
History
Nicolaus Copernicus: Ancient Astronomer
Principle purpose of this lecture is to present on Nicolaus Copernicus: Ancient Astronomer. He was a Renaissance mathematician and astronomer who formulated a model of the universe…
History
Ptolemy: Ancient Astronomer
Major purpose of this lecture is to present on Ptolemy: Ancient Astronomer. Ptolemy was an influential mathematician, astronomer, astrologer, geographer and also a poet. He was a…
Physics
Ancient Greek Astronomers
The aim of this lecture is to present on Ancient Greek Astronomers. Astronomy is an area where the Greeks displayed a remarkable talent. Famous astronomers of antiquity are:…
Physics
Gravity and Other Forces
Prime purpose of this lecture is to present on Gravity and Other Forces. It is a tutorial study based lecture. The mass of an object refers to…
Physics
Special Theory of Relativity (STR)
Basic purpose of this lecture is to present on Special Theory of Relativity (STR). In physics, Special Theory of Relativity is the generally accepted and experimentally well…
Physics
Measuring Distances in Astronomy
General purpose of this lecture is to present on Measuring Distances in Astronomy. Basic Principles are: Geometric methods; Standard candles and Standard rulers. The last two methods relate quantities that…
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