Extensive equipment set incorporating 30 student experiments for demonstrating the fundamental properties of waves using the example of 40 kHz ultrasonic waves
Stored in a tough tray with foam inlay
Includes two ultrasonic transmitters, a rod-shaped microphonic sensor for recording and analysing oscillations using a standard oscilloscope, and an ultrasonic pen for recording wave fronts along the desktop in the form of lines of the same phase (isophases)
In order to measure ultrasonic amplitudes, it is sufficient in many cases to use an analogue voltmeter
Includes comprehensive experiment descriptions (student / instructor version)
Experiments:
Display of sound oscillations on an oscilloscope
Relationship between oscillations and waves
Comparison of oscillations at two points along a wave
Analysis of phase relationships using an ultrasonic “pen”
Determination of wavelength and velocity of sound
How velocity of sound depends on temperature
Transmission characteristic of ultrasonic transmitters
Resonance curve for ultrasonic transducers
Transmission and reflection of ultrasonic waves
Absorption of ultrasonic waves
Superimposition of sinusoidal oscillations
Constructive and destructive reinforcement when sinusoidal oscillations are superimposed
Recording of wave fronts using ultrasonic pen
Generation and detection of straight wave fronts
Diffraction of ultrasonic waves by an edge
Diffraction of ultrasonic waves by a single slit
Interference between two beams
Law of reciprocity for interference between two beams
Diffraction by a double slit
Phase relationships for diffraction by a double slit I
Phase relationships for diffraction by a double slit II
Formation of images by a spherical concave mirror
Plotting of Fresnel zones
Formation of images by a Fresnel zone plate
Interference of ultrasonic waves by Lloyd’s mirror
Design of a simple interferometer
Design of a Michelson interferometer
Elimination of interference by interrupting the path
Generation of standing ultrasonic waves
Beats in ultrasonic waves
Doppler effect in ultrasonic waves
Recommended / Required:
PC Oscilloscope 2 x 25 MHz
Analogue Multimeter ESCOLA 30
Note:
When using an analogue voltmeter which is unsuitable for measuring alternating voltages of frequencies up to 40 kHz, additionally required: Ultrasonic Adapter Lead
