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 […]
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What is Viscosity? Application of Viscosity to Fluid Mechanics
If we move through a pool of water we experience a resistance to our motion. This shows that there is a frictional force in liquids. […]
Read moreThe Linde Process and its Significance in Gas Cooling
The cooling of a gas in a free expansion is small but Linde in his experiments known as the Linde Process, devised an ingenious arrangement […]
Read morePrinciples and Application of Resonance in Sound and Mechanics
If a diving springboard is bent and then allowed to vibrate freely, it oscillates with a frequency which is called its natural frequency. When a […]
Read moreHow to Convert Milliammeter Into Voltmeter and Ammeter
Ohm’s law enables us to use a milliammeter as a voltmeter. Let us suppose that we have a moving – coil instrument which requires 5 […]
Read moreWorking Principles, Types and Uses of a Galvanometer
A Danish physicist & chemist Hans Christan Ørsted discovered the first instrument to calculate current or create magnetic fields. A French physicist & mathematician André […]
Read moreBomb Calorimeter – Working Principles and Uses
The bomb calorimeter is an instrument used in measuring the heat of combustion of a substance. Combustion is always accompanied by the evolution of heat. […]
Read moreHow to Measure Wavelength Using Young’s Interference Bands
A laboratory experiment to measure wavelength by Young’s interference bands is shown in the diagram below. Light from a small filament lamp is focused by […]
Read moreHow to Measure the Velocity of Sound in a Quincke Tube
Quincke devised a simple method of measuring the velocity of sound by obtaining permanent interference between two sound waves. He used a closed tube, now […]
Read moreThe Production and Uses of Ultrasonic Sound Waves
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; […]
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