Set of mechanical waves in strings, springs, air and plates.

Função

Intended for the study of physics, laboratory physics experiments on: Mechanical waves. Acoustics. Sound sources, sound, noise, and the physiological qualities of sound. What is sound? The frequency of a sound wave, high-pitched and low-pitched sounds. Auditory intensity, a physiological quality associated with the amplitude of sound. The difference between auditory intensity and the sound intensity of the wave. Waves only transport energy. Undesirable sounds, industrial noise. Sound reverberation. Echo and sound reverberation. Reverberation time. Sound beats, constructive and destructive interference between two component waves. The sound resulting from the superposition of two sound waves. The average period and frequency of beats. How the period of beats relates to the periods of the component waves. How the frequency of beats relates to the frequencies of the component waves. Standing sound waves in an open tube, resonance. Sound, a mechanical, longitudinal, and three-dimensional wave. What is meant by a closed sound tube and an open sound tube. Sound and wave interference, the standing wave in an open tube. Fixed points of constructive and negative interference, the nodes and antinodes of the standing wave. The speed at which sound propagates in a mechanical medium. Timbre. Auditory intensity, with an observer intervening. The antinodes and nodes of the standing sound wave, listening inside an open sound tube. Determining the speed of sound in an open sound tube, Kundt's tube. The positions of the antinodes and nodes, indicated by cork dust, in an open tube. Standing sound waves in a closed tube, resonance. The speed at which sound propagates in a mechanical medium. Some factors that influence the speed of sound. The antinodes and nodes of the standing sound wave, listening inside the sound tube. Determining the speed of sound in a closed sound tube. The positions of the antinodes and nodes, indicated by cork dust, in a closed tube. The antinodes and nodes indicated by cork dust. Mechanical waves in strings. Standing waves on a vibrating taut string. Applying periodic transverse perturbations to a taut string. The incident wave, reflected wave, resonance wave, and fundamental frequencies of vibration. Identifying nodes, antinodes, and wavelength. Identifying other natural frequencies, harmonics, and resonant frequencies, while maintaining the length L and tension strength. Listening to the sound along the antinodes and nodes of the standing wave on a string. Varying the length and tension strength, identifying the fundamental frequency and harmonics. Calculating the propagation speed of the incident wave and the reflected wave on a vibrating taut string. Comparing waves on vibrating taut strings with the same length, different linear densities, under the same tension. The incident wave, the reflected wave, and the resonance wave. The first harmonic on strings with different linear densities. Calculating and comparing the propagation speed values on vibrating taut strings with different linear densities. Waves on a vibrating taut string composed of segments of different linear densities. Taylor's equation applied to a vibrating taut string, using a tensiometer. Determining the propagation speed of the disturbance along the string. Mechanical waves in springs. Longitudinal waves in a vibrating taut helical spring, standing waves. Observing longitudinal waves in a vibrating taut helical spring. The nodes, antinodes, and wavelength. Identifying other natural frequencies, harmonics. Mechanical waves in plates. Chladni resonant plate patterns, vibration mechanics. Observing and listening to the sound at the antinodes and nodes of an oscillating plate subjected to different excitation frequencies, etc.