Understanding Waves: Longitudinal and Transverse, Characteristics and Equation, Appunti di Fisica

Scarica Understanding Waves: Longitudinal and Transverse, Characteristics and Equation e più Appunti in PDF di Fisica solo su Docsity! Awave is a kind of oscillation that travels through space and matter. waves transfer energy from one location to another and they come in two kinds: - longitudinal + longitudinal waves are like those of sound. The vibrations parallel to the direction of travel. An example is sound. - transverse — Transverse waves are like those on water, with the surface going up and down. The vibrations are ninety degrees perpendicular to the wave's direction of travel. Exemples: waves in water, waves on a string, light waves. They transfer energy from place to place. Example of duck: The waves carry energy through but they don't carry the duck with them. Despite there are waves, the duck goes up and down and when the waves gone he's back to his original position rest crest position “— trough time or distance —_——_»Ò characteristics of waves: - wavelength (lunghezza d'onda) — is the distance from one crest to another, or from one trough to another, of a wave. The crest is the highest point of the wave. So, basically is the length of a full cycle of a wave from one point to the next same point. It is measured in meters and it's given the symbol lambda. wavelength k_Ii amplitude distance - amplitude — is a measure of the displacement of the wave from its rest position. It is measured from the equilibrium position or the central line to the crest. - frequency — is the number of times per second that the wave cycles and it's given the unit of hertz - Speed — this is how fast the disturbance of the wave is moving. The equation equals frequency times wavelength — V= f À