Physics

Principle objective of this lecture is to present on how is the Sun Active. The Sun is an average-size yellow star, just like billions of others…

Sunspots typically about 10000 km across. At any time, the sun may have hundreds or none. They are dark color because they are cooler than…

The Sun is our sole source of light and heat in the solar system. This is a very common star, a glowing ball of gas held…

Major objective of this lecture is to present on Outer Layers of Sun. Outer Layers includes: Photosphere: Helioseismology and Sun spots; Chromosphere; Corona; Prominences, flares, coronal mass ejections. Photosphere…

The aim of this lecture is to present on Sun: General Properties. Common Sun Properties are: Spectral type G2V; Age: ~ 4.52 Gyr; Absolute visual magnitude MV =…

Prime objective of this lecture is to present on Sun: Energy Path. Sun path refers to the apparent significant seasonal-and-hourly positional changes of the sun as the…

Basic objective of this lecture is to present on Measuring Motion: Speed and Acceleration. Example; Measuring Distance: Meter – international unit for measuring distance. Calculating Speed: Speed (S) =…

General objective of this lecture is to present on Properties of Motion. There are three types of Properties of Motion: Displacement; Velocity and Acceleration. Displacement is the distance…

Free-Fall Motion means an object moving under the influence of gravity only. Any object that is being acted upon only by the force of gravity is…

Isaac Newton was the first to connect the concepts of force and mass to produce acceleration. This lecture briefly explain Newton’s Second Law of Motion. Newton’s second…

This lecture focus to describe on History of Space Travel (1957- 2006). In the 1950s; during the Cold War the USA and the USSR competed in everything…

The sun’s energy has been used for centuries to: Dry clothes and Dry meats. Plants use solar energy to make food through a process called…