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  2. Sindhi Adabi Board - Wikipedia

    en.wikipedia.org/wiki/Sindhi_Adabi_Board

    Sindhi Adabi Board is a government sponsored institution in Pakistan for the promotion of Sindhi literature. It was established in 1955 in Jamshoro , Sindh . [ 1 ] It is under the Education Department of the Government of Sindh .

  3. D. J. Sindh Government Science College - Wikipedia

    en.wikipedia.org/wiki/D._J._Sindh_Government...

    Dayaram Jethamal Sindh Government Science College, [1] (Urdu: ڈی جے سندھ گورنمنٹ سائنس کالج) commonly known as DJ Science College, is a public community college that is affiliated with the Board of Intermediate Education Karachi and the University of Karachi — it is located near Burns Road in Karachi, Sindh, Pakistan. [2]

  4. Acoustics - Wikipedia

    en.wikipedia.org/wiki/Acoustics

    Acoustics is a branch of physics that deals with the study of mechanical waves in gases, liquids, and solids including topics such as vibration, sound, ultrasound and infrasound. A scientist who works in the field of acoustics is an acoustician while someone working in the field of acoustics technology may be called an acoustical engineer .

  5. Sound - Wikipedia

    en.wikipedia.org/wiki/Sound

    In physics, sound is a vibration that propagates as an acoustic wave through a transmission medium such as a gas, liquid or solid. In human physiology and psychology , sound is the reception of such waves and their perception by the brain . [ 1 ]

  6. Underwater acoustics - Wikipedia

    en.wikipedia.org/wiki/Underwater_acoustics

    Output of a computer model of underwater acoustic propagation in a simplified ocean environment. A seafloor map produced by multibeam sonar. Underwater acoustics (also known as hydroacoustics) is the study of the propagation of sound in water and the interaction of the mechanical waves that constitute sound with the water, its contents and its boundaries.

  7. Sindh Education and Literacy Department - Wikipedia

    en.wikipedia.org/wiki/Sindh_Education_and...

    The Education and Literacy Department is a key division of the Government of Sindh, Pakistan, responsible for overseeing the provincial's education system.Its primary role is to manage educational affairs within Sindh and coordinate with the Federal Government and donor agencies to promote education.

  8. Piano acoustics - Wikipedia

    en.wikipedia.org/wiki/Piano_acoustics

    The Railsback curve shows how a piano tuned to compensate for inharmonicity deviates from theoretically correct equal-tempered tuning. The Railsback curve, first measured in the 1930s by O.L. Railsback, a US college physics teacher, expresses the difference between inharmonicity-aware stretched piano tuning, and theoretically correct equal-tempered tuning in which the frequencies of successive ...

  9. Absolute threshold of hearing - Wikipedia

    en.wikipedia.org/wiki/Absolute_threshold_of_hearing

    Auditory sensitivity changes when the duration of a sound becomes less than 1 second. The threshold intensity decreases by about 10 dB when the duration of a tone burst is increased from 20 to 200 ms. For example, suppose that the quietest sound a subject can hear is 16 dB SPL if the sound is presented at a duration of 200 ms.