SEK - Ultrasonic Waves @115V

Extensive equipment set incorporating 30 student experiments for demonstrating the fundamental properties of waves using the example of 40 kHz ultrasonic waves. Includes two ultrasonic transmitters, a rod-shaped microphonic sensor for recording & analysing oscillations using a standard oscilloscope & 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. Contents: 1 Ultrasonic control unit 2 Ultrasonic transmitters, 40 kHz 1 Ultrasonic pen 1 Holder for ultrasonic pen 1 Holder base for ultrasonic pen 1 Microphone probe 2 Beam splitters 3 Clamps for beam splitters 1 Fresnel zone plate 1 Concave mirrors 2 Side pieces for double slit/reflectors 1 Centre post for double slit 1 Clap for double slit 1 Ultrasonic absorber 2 BNC cables, 1 m 1 Cable, BNC/4-mm 1 Plug-in power supply Includes instruction for 30 experiments on CD Display of sound oscillations on an oscilloscope * Relationship between oscillations & waves * Comparison of oscillations at two points along a wave * Analysis of phase relationships using an ultrasonic “pen” * Determination of wavelength & velocity of sound How velocity of sound depends on temperature Transmission characteristic of ultrasonic transmitters ** Resonance curve for ultrasonic transducers * Transmission & reflection of ultrasonic waves ** Absorption of ultrasonic waves ** Superimposition of sinusoidal oscillations * Constructive & destructive reinforcement when sinusoidal oscillations are superimposed * Recording of wave fronts using ultrasonic pen Generation & 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 I ** 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