ध्वनि
(aangrezi:Sound) dhvani tarangean anudairghy tarangean hoti haian. isaki utpati vastuoan mean kampan hone se hoti hai, lekin sab prakar ka kampan dhvani utpann nahian karata. jin tarangoan ki avriti lagabhag 20 kampan prati sekend se 20,000 kampan prati sekend ke bich hoti hai, unaki anubhooti hamean apane kanoan dvara hoti hai usake lie hamare kan sugrahi nahian haian aur hamean unase dhvani ki anubhooti nahian hoti hai. atah dhvanio shabd ka prayog keval unhian tarangoan ke lie kiya jata hai, jinaki anubhooti hamean apane kanoan dvara hoti hai. bhinn-bhinn manushyoan ke lie dhvani tarangoan ki avritti parisar alag-alag ho sakate haian.
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tika tippani aur sandarbh