Case inserts: what’s inside
Educational kit: Sound waves
Benchtop acoustics laboratory consisting of two cases for studying the nature of sound, resonance, standing waves and interference.
This benchtop acoustics laboratory consisting of two cases (thirty components) for demonstrating and studying the nature of sound: its origin, propagation in gases, liquids and solids, behavior in rarefied media and vacuum, as well as resonance, standing waves, interference, diffraction, intensity and physics of musical instruments. Basic experiments are carried out qualitatively, and in conjunction with a smartphone (sound level meter and frequency analyzer applications) and a function generator, the kit allows for quantitative measurements up to determining the speed of sound. The kit meets the requirements for equipment of physics classrooms in general secondary education institutions according to the current curriculum.
- 1.Hand pump - 1 pc.
- 2.Sound source - 1 pc.
- 3.Foam ball with hook, Ø70 mm - 1 pc.
- 4.Spring for experiments with longitudinal waves, Ø80 mm - 1 pc.
- 5.Silicone tube (inner diameter 7mm, outer diameter 11mm, length=500mm). - 1 pc.
- 6.Vessel set for experiments in vacuum (transparent, includes: air valve, pressure gauge, rubber sealing ring) 1 set
- 7.Stand for tuning forks - 1 pc.
- 8.Polyurethane sponge, 80x60x40 mm - 1 pc.
- 9.Tuning fork, 512 Hz - 2 pcs.
- 10.Mallet (rubber head) - 1 pc.
- 11.Rod with internal thread, Ø10×300 mm, steel - 2 pcs.
- 12.Rod with external thread, Ø10×300 mm, steel - 2 pcs.
- 13.Scissors - 1 pc.
- 14.Candle, Ø38×38 mm - 1 pc.
- 15.Drum, 8 inches - 1 pc.
- 16.Silicone tube (inner diameter 7 mm, outer diameter 9 mm, L=2 m) - 1 pc.
- 17.Scotch tape - 1 pc.
- 18.Banana plug adapter, black, Ø4×42 mm - 1 pc.
- 19.Banana plug adapter, red, Ø4×42 mm - 1 pc.
- 20.Electric bell, DC supply voltage 3-24 V - 1 pc.
- 21.Box of matches - 1 pc.
- 22.Measuring ruler, 20 cm - 1 pc.
- 23.Telescopic flute, Ø30×140 mm - 1 pc.
- 24.bosshead clamp - 2 pcs.
- 25.Laboratory stand base - 2 pcs.
- 26.Thread on a spool - 1 pc.
- 27.Plastic funnel, base Ø70 mm - 2 pcs.
- 28.Set for demonstrating sound transmission (two plastic hemispheres connected by a thread) 1 set
- 29.Elastic band - 5 pcs.
- 30.Ping-pong ball - 2 pcs.
- 1. Sound as a mechanical wave. Sound source - a vibrating body (rubber band, metal ruler, drum membrane, tuning fork, vibration damping)
- 2. Pitch and loudness of sound: dependence on the frequency and amplitude of vibrations (telescopic flute, tuning fork, rubber band, glasses of water)
- 3. Propagation of sound in various media: air, solid body and thread, water; longitudinal wave model in a spring
- 4. Sound in rarefied air and a vacuum: the effect of air pressure on loudness
- 5. Resonance of sound vibrations: resonance of two tuning forks 512 Hz, resonator; frequency sweep with generator
- 6. Standing waves and determination of the speed of sound: a standing wave in a spring and in the air column of a flute
- 7. Interference and diffraction of sound waves (with function generator and oscilloscope)
- 8. Sound intensity and impact: candle flame deflection, water waves, sound attenuation with distance
- 9. Physics of musical instruments: strings, winds, idiophones and percussion; pitch, loudness and timbre
High school
basic (grades x–xi, basic level) level
Mechanical vibrations and waves
advanced (grades x–xi, advanced level) level
Mechanical vibrations and waves
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