Human perception of sounds is not only performed by an ear as a part of the body. In fact, a person hears through the organ of hearing, which has got complex structure. The ear is only a visible part of it. Auricle or pinna essentially acts as a funnel through which a person catches vibrations in the air. Coming through the auditory canal, they affect the eardrum – a thin membrane that separates the outer and middle ears. Then the eardrum vibrations are transmitted to the auditory ossicles and reach the inner ear, the main part of which is an organ called the bony ...
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This experiment explores the functionalities of the oscilloscope. In part 1, the oscilloscope is used to display a DC signal and an AC signal, and to measure the frequency of an AC signal. In part 2, the oscilloscope is used to display the exponential response of an RC circuit, and to estimate the time constant τ using the displayed signal. The results of the experiment are presented in this laboratory report. 1. Oscilloscope The oscilloscope is a device that measures electrical waveforms at any point in an electrical circuit. The waveforms are normally displayed graphically in a voltage versus time format, ...