Oscillation vs Wave
Oscillations thiab nthwv dej yog ob qhov xwm txheej loj uas tau tham hauv physics. Cov ntsiab lus ntawm nthwv dej thiab oscillations tau siv dav hauv ntau qhov chaw thiab tseem ceeb heev hauv kev nkag siab ntawm lub ntiaj teb. Hauv tsab xov xwm no, peb yuav tham txog dab tsi oscillations thiab nthwv dej yog dab tsi, kev siv nthwv dej thiab oscillations, kev sib txuas ntawm nthwv dej thiab oscillations, lawv qhov zoo sib xws, thiab thaum kawg qhov txawv ntawm nthwv dej thiab oscillations.
Kev sib tw
Oscillations yog ib hom kev txav mus los. Ib qho oscillation feem ntau txhais tau tias yog qhov hloov pauv rov ua dua lub sijhawm. Lub oscillation tuaj yeem tshwm sim dhau qhov nruab nrab qhov sib npaug lossis nruab nrab ntawm ob lub xeev. Lub pendulum yog ib qho piv txwv zoo rau kev ua haujlwm oscillatory. Cov oscillations feem ntau yog sinusoidal. Ib qho kev hloov tam sim no kuj yog ib qho piv txwv zoo rau qhov no. Nyob rau hauv qhov yooj yim pendulum, lub bob oscillates tshaj qhov nruab nrab equilibrium point. Nyob rau hauv ib qho alternating tam sim no, cov electrons oscillate nyob rau hauv lub kaw Circuit Court dhau ib tug equilibrium point.
Muaj peb hom oscillations. Thawj hom yog cov tsis-damped oscillations nyob rau hauv uas lub zog sab hauv ntawm lub oscillation tseem nyob tas li. Qhov thib ob hom oscillations yog damped oscillations. Nyob rau hauv damped oscillations, lub zog sab hauv ntawm oscillation txo lub sij hawm. Qhov thib peb yog qhov yuam kev oscillations. Nyob rau hauv yuam oscillations, ib tug quab yuam yog siv rau ntawm lub pendulum nyob rau hauv ib lub sij hawm variation rau lub pendulum.
Wave
Ib tug neeg kho tshuab nthwv dej yog tshwm sim los ntawm ib qho turbulence hauv nruab nrab. Cov piv txwv yooj yim rau cov tshuab tsis muaj suab nrov, av qeeg, dej hiav txwv nthwv dej. Ib nthwv dej yog ib txoj hauv kev nthuav tawm lub zog. Lub zog tsim nyob rau hauv lub turbulence yog propagated los ntawm nthwv dej.
A sinusoidal yoj yog nthwv dej uas oscillates raws li qhov sib npaug y=A sin (ωt – kx). Raws li yoj propagates los ntawm qhov chaw, lub zog nws nqa kuj yog propagated. Lub zog no ua rau cov khoom ntawm nws txoj kev oscillate. Nws tseem tuaj yeem txhais tau lwm txoj hauv kev raws li lub zog tau nthuav tawm los ntawm kev oscillation ntawm cov khoom.
Muaj ob hom kev nce qib; uas yog, longitudinal waves thiab transverse waves. Nyob rau hauv ib tug longitudinal yoj, oscillations ntawm hais yog parallel mus rau cov kev taw qhia ntawm propagation. Qhov no tsis txhais tau hais tias cov khoom txav nrog lub nthwv dej. Cov hais tsuas yog oscillate txog qhov sib npaug ntawm qhov chaw nyob. Nyob rau hauv transverse nthwv dej, oscillation ntawm hais tshwm sim perpendicular mus rau kev taw qhia ntawm propagation. Lub suab tsis muaj tsuas yog longitudinal nthwv dej, nthwv dej ntawm ib txoj hlua yog transverse. Cov dej hiav txwv nthwv dej yog ib qho sib xyaw ua ke ntawm cov nthwv dej hla thiab cov nthwv dej ntev.
Dab tsi yog qhov txawv ntawm Wave thiab Oscillations?
