The Chemical and Photochemical Reactions in the Atmosphere: Photochemistry is a special branch of chemistry

Uses of Aluminium, Copper, Zinc, Iron, and Silver: Ancient human history is divided into two ages,

Hormones: As a child is born, he or she experiences a rapid change in the

What are Biomolecules? Biomolecules are the molecules present in living organisms that serve as a

The electroscope was invented by the British physician William Gilbert around \(1600.\) Have you touched

Van der Waals Forces: The existence of weak attractive intermolecular forces was first proposed by Johannes

Bohr's Model of Hydrogen Atom Bohr gave the postulates as below: (1) Electrons can only

Discovery of Electron Research into the electric discharge in the discharge tube (J.J. Thomson, 1896)

Cos 120° is commonly used in both trigonometry and calculus in the higher grades. The

Equation of Progressive Wave: Progressive wave is one of the types of waves, and it