### How to Determine the Dimension and Magnitude of Young’s Modulus

A modulus of elasticity of the wire, called Young’s modulus (E), is defined as the ratio It should be noted that Young’s modulus ,…

A modulus of elasticity of the wire, called Young’s modulus (E), is defined as the ratio It should be noted that Young’s modulus ,…

In understanding Hooke’s law, we can advance an illustration: A bridge, when used by traffic during the day, is subjected to loads of varying magnitude….

The kinetic theory of saturation can best be explained when we consider a vapor in contact with its liquid, in an otherwise empty vessel which…

Fraunhofer Lines: In 1814 Fraunhofer noticed that the sun’s spectrum was crossed by many hundreds of dark lines. These Fraunhofer lines, as they are called,…

A concert-hall, lecture-hall, or a broadcasting studio requires special design to be acoustically effective. The technical problems concerned were first investigated in 1906 by Sabine…

What are Ultrasonics? Ultrasonics are sound waves of higher frequency than 20000 Hz, which are inaudible to a human being. These are known as ultrasonics; and…

In 1905 Hebb carried out an accurate experiment to determine the velocity of sound in free air which used a method of interference. He carried out…

Quincke devised a simple method of measuring the velocity of sound by obtaining permanent interference between two sound waves. He used a closed tube SAEB…

The radiant energy which Herschel found beyond the red is now called infra-red radiation, because it is less refracted than the red. Radiant energy is…

What is a thermopile? A thermopile is a set of thermocouples that has been designed and arranged to measure little quantities of radiation or radiant…