Chladni figures-making sound visible
The Chladni figures are named after the German scientist Ernst Florens Friedrich Chladni (1756-1827).
Chladni excited the normal modes of thin metal plates covered with sand by stroking ...
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The Demonstration Monochord investigates the relationship between the pitch of a sound and the length of the string. Also investigate overtones formed by harmonic waves with intermediate nodes and the dependence of the pitch on string tension ...
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Lip whistle for experiments on pitch as a function of resonance space. Closed wooden whistle with a round cross-section and movable piston, chromatic range from g1 (392 Hz) to g² (794 Hz).
Frequency range: approx. 400 Hz –800 Hz
Resonance ...
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Metallophone for demonstrating a C major scale from c² to g². Note labels, frequencies and frequency ratios are printed on the instrument. With striking hammer.
Dimensions: approx. 320x210 mm²
Weight: approx. 510 g
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A wooden box open at both ends, with a clamping mechanism for a string to demonstrate the relationship between pitch and string length and the dependence of pitch on string tension. Includes an indicator for the tensioning force, as well as ...
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Speaker that approximates to being a point source for excitation of Kundt tube (1000814), for example.
Frequency range: 100 Hz – 20 kHz
Max. load capacity: 10 W
Impedance: 8 Ω
Shaft: 10 mm dia.
Dimensions: 100x135x80 ...
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Ideal sound source for acoustics experiments in the frequency range 60 Hz to 23 kHz. Includes connecting lead with 4 mm safety plugs.
Frequency range: 60 Hz to 23 kHz (-10 dB)
Power capacity: 100 W (as per IEC 268-5)
Impedance: 4 &Omega ...
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Glass tube for demonstrating standing sound waves and calculating wavelengths of sound using cork powder in a method devised by Kundt.
Cork powder is spread evenly throughout the tube by means of a filler chute. Then a sound source, e.g. a ...
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Heating rod for warming air in Kundt’s tube E up to about 50°C.
Operating voltage: max. 12 V
Power consumption: 36 W
Temperature in Kundt’s tube: max. 50°C
Connectors: Pair of 4-mm plugs
Dimensions: 900 mm x 11 mm diam. Approx.
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Electronic switch which outputs an electrical pulse to a connected speaker at
the press of a button. Power supplied via 9-V block battery.
Dimensions: 100 x 75 x 35 mm³ approx.
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Miniature microphone at the end of a long rod for measuring changes in sound
pressure in Kundt’s tube E. With thread for attaching probe disc of Kundt’s
tube E.
Frequency range: 20 Hz – 16 kHz
Diameter of rod: 6 mm
Length of ...
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All-purpose dual-channel amplifier for long or short microphone probes. Particularly suitable for use with microsecond counters in experiments for determining speed of sound, including 12 V AC plug-in power supply. Both channels can be individually ...
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All-purpose dual-channel amplifier for long or short microphone probes. Particularly suitable for use with microsecond counters in experiments for determining speed of sound, including 12 V AC plug-in power supply. Both channels can ...
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Easy to use counter for measuring time in microseconds. Particularly well suited for measurements made in conjunction with the microphone box. Includes 12 V AC plug-in power supply. The counting procedure is started via the Start input and ...
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Pair of metal rods with a connecting lead for use with the microphone box in order to start measurements of time for the sound pulses in free space.
Length of lead: 75cm
Connectors: 2 x 4-mm safety plugs, 3.5mm jack plug
Rods: ...
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Miniature microphone at the end of a short rod for measuring changes in sound
pressure.
Frequency range: 20 Hz – 16 kHz, (1 – 20 Hz and 16 – 42 kHz,
nonspecified tolerance range)
Diameter of rod: 6 mm
Length of rod: 140 mm
Connecting ...
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Sound tube made of transparent acrylic with loudspeaker and movable scale for
quantitative investigation of sound waves in air or other gases, in particular
for measurement of wavelength and speed of sound. With two stand bases, capillary ...
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Experiment Topics:
· Speed of propagation of sound pulses in various rods
· Comparison between the propagation of longitudinal and transverse waves
· Standing sound waves in short rods
· Polarity of reflections ...
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Quincke’s resonance tube is used for demonstrating interference effects in standing sound waves. The equipment set consists of a resonance tube with a millimetre scale which is partially filled with water and is connected to an expansion ...
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Universally deployable digital meter used to determine the sound level of any number of acoustic sources across a wide sound range. Device is housed in a robust plastic casing with integrated calibration signal and large LCD display for easy ...
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Hollow glass bulb with a narrow tube leading out for demonstrating acoustic resonance. The fundamental oscillation is generated by blowing into the opening or banging on the outside of the bulb.
The elasticity and inertial mass of the air ...
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