The light waves The light is an external factor that affects the eye causing the sense of vision, The light waves are electromagnetic transverse waves that can travel through free space with velocity 300000...
Look at the sky, and you will notice that the Sun rises from the east and sets from the west, The sunrise and the sunset do not occur due to the rotation of the...
The Sun is the main source of energy, and it is very important in our life, but there are resources of energy which are renewable sources of energy and non-renewable sources of energy, They...
Importance of the Sun Do you see the Sun in the sky in the morning every day? Do you know the importance of the Sun? The Sun is the main source of energy on...
