Wave & Sound
Wave Machine, Metal
Demonstrating longitudinal and transverse waves. A number of eccentric discs move a number of metal rods. Transverse waves are obtained by straight rods and longitudinal waves by bent rods.
PH36040
Availability:
In Stock
In Stock
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Wave & Sound
Hand Vacuum Pump
The vacuum pump is made of durable plastic. It can easily provide a vacuum of 500mmHg by pumping its handle, the pumping rate of which is about 15ml per pumping. The pump itself is sealed and self lubricated. By changing its working mode, the pump can be used to establish air pressure as high as approx. 2 atm. It is a must for middle and primary school laboratories.
PH36018B -
