The dissertation proposes an educational product, to assist the teacher in the classroom, to study stationary waves in a tube with an open end, in order to understand elementary physical concepts, and physical phenomena such as compression and rarefaction, wavelength , speed of wave propagation and other concepts involved, to relate properties, and to observe concepts and correlated phenomena, besides elucidating where the phenomenon of sound wave is more frequent in daily life, as an example in musical instruments, medical equipment, telecommunications and others. The experiment proposed in the Dissertation is based on the prototype device produced by Pasco, with the record (economy resonance tube wa-9495), an industrialized version of easy handling. The alternative experiment consists of a tube with one open end and the other closed, in a mechanism that allows the variation of tube length by means of a piston inside the tube, allowing to identify the wavelength of each mode of vibration, perceiving concepts characteristic element of wave, such as wavelength and frequency, and also, to explore phenomena such as resonance, compression and rarefaction.
|
