Code: EDUC241-535
The early setting is usual measured with the penetrometer or the Vicat apparatus . This kind of measurement has some disadvantages.
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Demonstrate the wave nature of sound at relatively short wavelength. Investigate reflection interference of sound waves etc. Transmit speech over microphone or set up a voice link with an FM radio. The equipment operates at a frequency of 40KHz giving a wavelength in air of approximately 8.3mm.
Comprising:
Ultrasonic’s transmitter
Ultrasonic receiver
Ultrasonic slave transmitter
Mini set with 2 Aluminium reflectors and perforated plate