|
|
Demonstration apparatus for investigating the relationship between the pitch of a sound and the length of the string making it. Also for investigating overtones formed by harmonic waves with intermediate nodes and the dependence of the pitch on string tension.
Two steel strings and one nylon string are stretched over a sound box....
|
|
|
|
|
|
|
Two steel and one nylon string with eyelets, fitting the monochord D(U15100)
|
|
|
|
|
|
|
Lip whistle for experiments on pitch as a function of resonance space. Closed wooden whistle with a square cross-section and movable piston, chromatic range from g1 (392 Hz) to g² (794 Hz).
Frequency range: approx. 400 Hz –800 Hz
Resonance space: approx. 180x24x24 mm3
Length: approx. 550 mm
|
|
|
|
|
|
|
An electrodynamic system for use in conjunction with a function generator, for example, U21010 or U21015.
Connection: via two 4-mm-jacks
Power: 4 W
Impedance: 4 Ohm
Max. input voltage: 9 V
Diameter: 70 mm
Shaft length: 145 mm, 10 mm Ø
|
|
|
|
|
|
|
For the purpose of demonstrating Chladni's acoustic figures with fine, dry sand. Plates with 4-mm-plugs.
circular, diameter: 170 mm
|
|
|
|
|
|
|
For the purpose of demonstrating Chladni's acoustic figures with fine, dry sand. Plates with 4-mm-plugs.
square 140 mm x 140 mm
|
|
|
|
|
|
|
For demonstrating resonance oscillatons depending on the length of the leaf spring and the frequency. Three steel leaf springs are connected by a 4-mm-plug in a manner that six strips of different lengths are formed.
|
|
|
|
|
|
|
Transparent acrylic tube with scale and end plates for measuring standing acoustic waves and determining their wavelength in air or in other gases.
With tubing nozzles for filling the tube with various gases, built-in speaker at one end, a bore and guide for accommodating moving piston or probe microphone (U20601) at the other ...
|
|
|
|
|
|
|
Probe microphone for measuring changes in sound pressure in a Kundt tube with scale (U20600). A miniature microphone is attached to one end of a long stainless steel rod.
Frequency range: 20 Hz – 20000 Hz
Dimensions: approx. 740 mm x 8 mm dia.
Connector lead: 2 m
Connectors: DIN plug suitable for battery box (U20602).
|
|
|
|
|
|
|
Accessories for probe microphone (U20601) including a power supply and equipment for connecting the microphone to a meter or oscilloscope. The equipment includes a battery compartment for one 9 V alkaline battery and a voltage regulator to output the requisite 5 V DC.
Output voltage: 5 V DC
Input channels: Two 6-pin DIN ...
|
|
|
|
|
|
|
Features:
- Easy to read analog display
- Max Hold
- Battery check
- Analog output for connection to chart recorders and dataloggers.
- Tripod mount ideal for field use
Specifications:
Ranges: 54 to 126 dB in 7 ranges (referenced to 0.00002 bar)...
|
|
|
|
|
|
|
Features:
- +/- 2dB accuracy with 0.1dB resolution
- A&C weighting
- AC analog output
- Record max/min values over time
- Auto power off and Max Hold functions
- Utilizes 0.5" (12.7mm) condenser microphone
- Tripod mountable
...
|
|
|
|
|
|
|
Power supply for use with U40322 which eliminates the need for a 9V battery.
|
|
|
|
|
|
|
Reed pipe with 8 valves, tuned to G major.
Length: 37 cm
Weight: approx. 90 g
|
|
|
|
|
|
|
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
|
|
|
|
|
