Natural Phenomena

This chapter deals with the types and origin of charges. It explains the methods of charging by friction, conduction and induction and their detection by an electroscope. The phenomenon of earthquakes and the functions of a seismograph are also discussed here.

This chapter explains in detail the reflection of light. It also explains the laws of reflection and the phenomenon of multiple reflections. We will also learn to differentiate between regular and diffused reflection.

This chapter discusses the phenomena of refraction and dispersion of light. This chapter also discusses the structure, function and defects of the human eye in detail in this chapter.

In this chapter, we will study in detail the celestial bodies of the universe. This chapter further explains in detail the phases of the moon. A brief note on astronomy and astronomers are also given here.