Lecture

Acceleration means speeding up. Acceleration is the rate at which velocity changes. This can be an Increase in speed; Decrease in speed or Change in direction.…

The Sun gives off energy. The energy must come from somewhere – there’s no free lunch. Conservation of energy is a fundamental tenet of physics. Now…

A solar flare occurs when magnetic energy that has built up in the solar atmosphere is suddenly released. Radiation is emitted across virtually the entire…

The earth’s global average surface temperature in present climate is 15C (59F). Without the atmosphere, it would be -18C (-0.4F). About 33C or 59.4F colder;…

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…