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THE MUSIC OF SOUND

THE MUSIC OF SOUND Sound : Sound is a form of energy which produces sensation of hearing in our ears. Production of sound : Sound is produce due ti vibrations of an object such as a stretched membrane or a string under tension. Waves: A wave is a disturbance movng through a medium when the particles of the medium set neighbouring particles in motion .A wave motion is a mode of transmission of energy through the medium .A wave in ehich the particled of the medium oscillate (vibrate)about their mean positions in a direction perpendicular to the direction of wvae propagation is called a transverse wave . A wave in which the particles of the medium oscillate (vibrate ) about their mean posiotions in a direction parallel to the direction of wave propagation is called a longitudinal wave. The particles do not move from one part to another part of the medium. Propagation of sound : Sound requires a medium for propagation  .i.e. ,it cannot travel through vaccum. Sound propagetes in the fo...

Solid Waste : Ecofriendly Management

Solid Waste : Ecofriendly Management Solid waste is any unwanted and discarded material created by human beings Solid Waste Management : 1) Waste can be  a resource , if it is managed properly and wisely . 2) If disposed carelessly , it becomes a major source of pollution of soil and water . 3) Generation of solid waste can be linked with economic growth ,environmental degradation ,health hazards,pollution of air ,water and land and destruction of human habitat. 4) More than 5000,1700 and 900 tonnes of solid waste per day , is created in Mumbai , Pune and Nagpur respectively .Mismanagement of solid waste resulted in heavy floods of 26th July 2005 in Mumbai. 5) E-waste is generated by electronic goods like discarded computers , TV sets and  mobile phones.5 tonnes of e- wastes is generated daily in India. 3)Classifation of soild waste: 1) Soild wastes can be classifield according to the source of waste or according to its biodegrabilitty. 2) According to source : Domestic , ind...