introduction to quantum mechanics experiments

In the previous chapter we have seen how light gets reflected when it is incident on a surface. Now let us see what happens when a ray of light travelling in one medium enters another medium of different optical density. It is a matter of common experience that a spoon placed in a gl..

In 1900, Max Planck presented the results of his famous black body radiation experiments, which showed that light has a dual character, behaving like a particle as well as a wave. He gave the Quantum Theory of Radiation explaining electromagnetic radiation and energy. Its main..

Introduction - A spider web is stronger than steel of the same thickness. Its elastic limit is greater than that of stee..

Take a bell jar. Towards its rounded end, fix a 'Y' shaped glass tube and on the open ends of the two branches tie a balloon each. On its open end tie a thin rubber sheet. The cavity of the bell jar acts as the thoracic cavity, the "Y" shaped tube as the trachea that branches into bronchi and the ..

Introduction - In the nineteenth century scientists saw enough evidence to prove that each element has its distinctive atom. But all tem atoms contain identical electrons. In spite of the fact that electrons carry negative charge, atoms as whole were found to be neutral. This led to the f..

Aristotle and other medieval thinkers believed that the natural state of bodies is the state of rest. Galileo opposed this concept. Galileo observed that, when a ball was made to roll down an inclined plane, its speed increased. An Object Moving Upward with Decreasing Speed He then tried rolling it..

Introduction - In the physical world, one of the most common phenomena is motion. The branch of Physics, which deals with the behaviour of moving objects, is known as mechanics. Mechanics is further divided into two sections namely Kinematics and Dynamics. Kinematics d..

Sound - Introduction - Mechanical waves which can cause the sensation of hearing are called sound waves. These waves are produced by bodies vibrating at frequencies lying between the range of 20Hz and 20,000Hz, perceived by the human ear. This is known as the audible range of fr..

Introduction - It is a matter of common experience that precious stones like diamonds, rubies, etc. or glass pieces glitter when light, particularly white light is incident on it. In this chapter let us find out why white light incident on a transparent prism splits into differe..

Introduction - All living creatures need food. The food is consumed so that energy is obtained. The energy is utilised by the body for various purposes like locomotion, conduction of impulses, repair of damaged tissues, building of cell materials, etc. The substance that is used to releas..