Phase velocity measurement of standing waves with the Cobra SMARTsense
Sku: 322167
€2,027.86
€2,433.43
Topics covered:
- Wavelength
- Phase velocity
- Group velocity
- Wave equation
- Standing wave
Principles and objectives:
A linearly polarized transverse standing wave is generated on a square cross-section elastic cord using a vibration generator. The wavelength is determined based on the excitation frequency. Then, the phase velocity of the cord wave is modified by changing the tensile stress. The relationship between the cord's phase velocity and tension on the cord is studied. Using a stroboscope, the standing wave can be represented even more impressively.
Under constant tensile stress, the frequency f depends on the wavelength λ of the wave propagating on the cord. The frequency is calculated based on 1/λ. The phase velocity c can be determined from this diagram.
The phase velocity c of the cord sheath, which depends on the cable's tensile stress, must be measured. The phase velocity is shown as a function of the tensile stress.
Function generator, digital display, and USB interface
External vibration generator for PHYWE wave tank
Connecting cable, 32 A, yellow, various lengths | : 1000 mm
Cobra SMARTsense Force & Acceleration - Sensor for measuring force and acceleration ±50 N / ±16 g (Bluetooth + USB)
PHYWE tripod
Stands rods, stainless steel, various sizes | : 750 mm
Rubber cord, 10 m
Tape measure, length = 2 m
| Thématique TP | Ondes |