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A material medium is necessary for sound propagation
Ordinarily, we hear sound, transmitted through the air. Unlike light, sound cannot pass through vacuum. This was discovered in 1654 by Otto Von Guericke. Let an electric bell be enclosed within a bell jar which is placed over a disc. Through a hole in the disc, air can be remov..
Sound Needs a Medium to Travel
The origin of sound is always some vibrating body. In some cases the vibrations of the source may be very small or very large that it may not be possible to detect them. This type of vibrations is produced by tuning fork, drum, bell, the string of a guitar etc. Human voice originates from..
Observer and source moving in the same direction as sound in a stationary medium
Putting w = 0, in equation (1-38), we get If b < a, then (v - b) > (v - a) and f l > f. If b > a, then (v - b) < (v - a) and f l < f. If b = a, then f l = f. Thus, for a passenger sitting in a train the frequency of the whistle of the train appears to be the same, when..
Putting w = 0, in equation (1-38), we get If b < a, then (v - b) > (v - a) and f l > f. If b > a, then (v - b) < (v - a) and f l < f. If b = a, then f l = f. Thus, for a passenger sitting in a train the frequency of the whistle of the train appears to be the same, when..Experiment to show that sound waves (mechanical waves) require a material medium for its propagation
Sound
Sound - Sound is always produced due to the vibration of a body. In some cases the vibrations of the source may be very small or very large that it may not be possible to detect them. This type of vibrations is produced by tuning fork, drum, bell, the string of a guitar etc. Hum..
Sound
Sound is always produced due to the vibration of a body. In some cases the vibrations of the source may be very small or very large that it may not be possible to detect them. This type of vibrations is produced by tuning fork, drum, bell, the string of a guitar etc. Human voice ori..
Speed of Sound
The speed of sound depends on the properties of the medium through which it travel..
Speed of Sound
Speed of Sound - The flash of lightning due to collision of clouds is seen much before the thunder, although both occur simultaneously. This happens because the velocity of light is greater than the velocity of sound. The speed of sound depends on (1) elasticity and (2..
Speed of Sound
The flash of lightning due to collision of clouds is seen much before the thunder, although both occur simultaneously. This happens because the velocity of light is greater than the velocity of sound. The speed of sound depends on (1) elasticity and (2) density of the ..
Sound as a Wave
A ringing bell, a thunderclap, laughter, and rock music are sounds that seem very different to us. However, all sounds are alike because they are waves. Let us understand how wave properties can be applied to sound. Sound is the form of energy propagated as w..
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