1014651 Includes Only:1 Ultrasonic control unit2 Ultrasonic transmitters, 40 kHz1 Ultrasonic pen1 Holder for ultrasonic pen1 Holder base for ultrasonic pen1 Microphone Probe2 Beam splitters3 Clamps for beam splitters1 Fresnel zone plate1 Concave mirrors2 Side pieces for double slit/reflectors1 Centre post for double slit1 Clap for double slit1 Ultrasonic absorber2 BNC cables, 1 m1 Cable, BNC/4-mm1 Plug-in power supplySEK Ultrasonic Waves (230 V, 50/60 Hz). Note: The 1014529 SEK Ultrasonic Waves is for operation with a mains voltage of 115 V (±10%), and the 1016651 set is for operation with a mains voltage of 230 V (±10%). 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 Gratnell's 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.Features:Includes instruction for 30 experiments on CDDisplay of sound oscillations on an oscilloscopeRelationship between oscillations and wavesComparison of oscillations at two points along a waveAnalysis of phase relationships using an ultrasonic "pen"Determination of wavelength and velocity of soundHow velocity of sound depends on temperatureTransmission characteristic of ultrasonic transmittersResonance curve for ultrasonic transducersTransmission and reflection of ultrasonic wavesAbsorption of ultrasonic wavesSuperimposition of sinusoidal oscillationsConstructive and destructive reinforcement when sinusoidal oscillations are superimposedRecording of wave fronts using ultrasonic penGeneration and detection of straight wave frontsDiffraction of ultrasonic waves by an edgeDiffraction of ultrasonic waves by a single slitInterference between two beamsLaw of reciProcity for interference between two beamsDiffraction by a double slitPhase relationships for diffraction by a double slit IPhase relationships for diffraction by a double slit IFormation of images by a spherical concave mirrorPlotting of Fresnel zonesFormation of images by a Fresnel zone plateInterference of ultrasonic waves by Lloyd's mirrorDesign of a simple interferometerDesign of a Michelson interferometerElimination of interference by interrupting the pathGeneration of standing ultrasonic wavesBeats in ultrasonic wavesDoppler effect in ultrasonic waves.