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عرض 751–765 من أصل 2205 نتائج
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Chladni Plates
The Chladni Plates Kit allows the continuous vibrations to be produced at measurable frequencies to determine the resonant frequencies of the plates and examine the modes of vibration at any frequency. A thin layer of sand is spread over the plate. The sand collected along the nodal lines of the wave patterns painted clear and beautiful pictures of the various modes of vibration. The plate’s resonances are audible. Kit is made of metal sheet in two shapes: square and round. The round plate can be vibrated about its center or an offset point to investigate both symmetric and asymmetric modes of vibration.
SKU: PH36214D - Uncategorized
Chladni Plates Square And Round Plate
The Chladni Plates Kit allows the continuous vibrations to be produced at measurable frequencies to determine the resonant frequencies of the plates and examine the modes of vibration at any frequency. A thin layer of sand is spread over the plate. The sand collected along the nodal lines of the wave patterns painted clear and beautiful pictures of the various modes of vibration. The plates resonances are audible. Kit is made of metal sheet in two shapes: square and round. The round plate can be vibrated about its center or an offset point to investigate both symmetric and asymmetric modes of vibration.
SKU: PH36214D - Uncategorized
Circuit Breaker Demonstration
Investigate the working principle of circuit breaker type fuse, with this demonstration model. The apparatus is built on a robust plastic base and includes resistive loads to simulate external wiring circuits. Applications of the thermal response of bimetal strips and also electromagnetism (movement from a solenoid) are clearly demonstrated in this model.
When a 12 V DC supply is connected (not supplied) the LED lights to show that current is flowing in the external circuit and the bi-metal strip can be seen to bend as its heater coil raises the temperature. After a few minutes the bending is sufficient to trip the mechanism and the current path is broken. At any current selection a short circuit situation can be initiated by pressing the red button and this produces an immediate response from the solenoid to disconnect the supply.
SKU: PH50136C
