Physics

The Sun is an ordinary middle-sized star. The sun creates energy by nuclear fusion in its core. The visible surface of the Sun is called…

Primary purpose of this lecture is to present on Properties of Sun. Here briefly summarize the overall properties of the Sun; Where does the light we…

Newton’s second law provides an explanation for the equal accelerations of freely falling objects of various masses. Acceleration is equal when air resistance is negligible. Acceleration…

Primary purpose of this lecture is to present on Mass and Weight. Mass is the quantity of matter in an object. It is also the measure of…

Principle purpose of this lecture is to present on Conceptual Physics: Newton’s Second Law of Motion. This lecture will help you understand: Force Causes Acceleration; Friction; Mass and Weight; Mass Resists…

Major purpose of this lecture is to present on Physics of Body Crashing. If a body of mass m is in constant motion no acceleration or deceleration…

  The aim of this lecture is to present on Experiment: Bottle Rockets with Parachutes. This lecture is a tutorial based presentation. What makes it work: Water is…

Prime purpose of this lecture is to present on Rockets and Satellites. A rocket moves forward when gases expelled from the rear of the rocket push it…

By Hubble Telescope you can see objects 14 billion years ago. It had to be repaired in space in 1993 and it has produced images of…

Basic purpose of this lecture is to present on Exploration Goals of NASA. Exploration Goals are: Study Earth from Space to advance scientific understanding and meet societal needs. Earth…

General purpose of this lecture is to present on Why Are We Exploring Space. This lecture explain an overview of NASA’s Plans and some really cool…

Galileo Galilei was born 15 Feb. 1564 in Pisa. He was educated in Camaldolese Monastery. His father wanted him to be a medical doctor; but…