APPARATUS ULTRASONIC SYSTEM

Ideal for demonstrating sound waves above the hearing threshold and reflection properties associated with sonar etc. Ultrasonic transmitter and receiver operating in 40KHz region enclosed in plastic enclosures (142x80x43mm). 2 KHz modulating frequency is transmitted by ultrasonic transmitter and detected by receiver, which amplifies the signal and drives a internal loudspeaker. Output signal can also be visualized on a CRO for more quantitative measurements via. 4mm colour coded sockets fitted on the receiver. Transmitter is supplied with two ultrasonic transducers, both can be switched ON simultaneously when required to produce two coherent sources. Interference pattern can be demonstrated, simplifies Young’s Slits experiment by using waves rather than light. Requires 9V DC batteries (not supplied).