Noise Pollution
Noise can be described as sound without agreeable musical quality or as an unwanted or undesired sound.
Thus Noise can be taken as a group of loud non harmonious sounds or vibrations that are unpleasant and irritating to ear.
A decibel is the standard for the measurement of noise .
The zero on a decibel scale is at the threshold of hearing, the lowest sound pressure that can be heard on the scale 20db is whisper.
40db the noise in a quiet office 60 db is normal conservation 80 db is the level at which sound becomes physically painful.
Sources of Noise Pollution
Noise Pollution like other pollutants is also a by product of industrialisation, urbanisation and modern civilization.
It has two sources i,e industrial and non industrial.
The industrial source includes the noise from various industries and big machines working at a very high speed and high noise intensity.
Non industrial source of noise includes the noise created by transport or vehicles.
Harmful effects of Noise Pollution
Lack of concentration
For better quality of work there should be concentration, noise causes lack of concentration.In big cities mostly all the offices are on main road.The noise of traffic or the loud speakers of different types of horns divert the attention of the people working in offices.
Fatigue
Due to noise Pollution, people cannot concentrate on their work.Thus they have to give more time for completing the work and they feel tiring.
Abortion is caused
There should be cool and calm atmosphere during the pregnancy.Unpleasant sounds make a lady of irritating nature.Sudden noise causes abortion in females.
Blood pressure
Noise Pollution Causes certain diseases in human.It attacks on the person's peace of mind.The noises are recognised as major contributing factors in accelerating the already existing tensions of modern living.These tensions result in certain diseases like blood pressure or mental illness etc.
Temporary or permanent Deafness
The effect of noise on audition is well recognised.Mechanics, locomotive drivers, telephone operators etc all have their hearing impairment as a result of noise at the place of work.Physictist, physicians and psychologists are of the view that continued exposure to noise
level above 80 to 100 db is unsafe,loud noise causes temporary or permanent deafness.
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| Noise Pollution |
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