In these videos and articles you'll learn the definition of a wave and the difference between transverse and longitudinal waves. You'll also learn the definition of the basic terms used to characterize waves; amplitude, period, frequency, and wavelength.
In these videos and articles you'll see visualizations of the propagation of sound waves, along with a visual definition of a sound wave's amplitude, period, frequency, and wavelength. You'll also learn how the speed of sound depends on the different characteristics of the medium. It will be shown how Mach numbers characterize faster than sound travel and their relationship to sonic booms. Also, you'll learn about the decibel scale, why sounds get softer, and how ultrasound medical imaging works.
W tym rozdziale poznasz efekt Dopplera, czyli zjawisko polegające na zmianie częstotliwości dźwięku, rejestrowanego przez obserwatora, jeśli porusza się on względem źródła (lub źródło porusza się względem obserwatora) i dowiesz się, jak obliczyć tę częstość.
In these videos and articles you'll learn how standing waves are produced and how to determine the wavelength and frequency of the different harmonics of standing waves produced in an open open tube or an open closed tube.