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Video: Dab tsi yog qhov ci specks hauv Brownian suab?
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2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
Soj ntsuam: Qhov chaw ci uas yog cov pa luam yeeb uas cuam tshuam teeb pom kev txav mus los ntawm qhov tsis sib xws tsab ntawv tsa suab . Kev piav qhia: Cov huab cua molecules sib tsoo cov pa luam yeeb los ntawm ntau qhov kev taw qhia thiab lub sijhawm sib txawv. Vim kev sib tsoo tsis sib xws, cov pa luam yeeb yog nyob ntawm random tsab ntawv tsa suab.
Hauv qhov no, dab tsi yog qhov ci ci?
Cov me me no me ntsis ntawm kaj lub teeb koj pom yog floaters lossis raws li Loos siv los hu lawv "muscae volitantes" piv txwv li ya ya. Lawv dag nrog qhov muag qhov kev lom zem vitreous, uas yog pob tshab, thiab suav nrog cov duab sib txawv, qhov loj me, qhov ntsuas tsis pom kev thiab tej zaum yuav muaj cov qauv sib txawv txav.
Kuj Paub, lub luag haujlwm ntawm cov pa luam yeeb hauv Brownian motion yog dab tsi? Cov pa luam yeeb loj dua huab cua hais . Yog vim li cas peb thiaj tuaj yeem pom cov pa luam yeeb zoo tshaj huab cua hais . Thaum lwm cua particle hits cov cov pa luam yeeb , nws hloov nws txoj kev coj mus rau qhov thib ob huab cua particle , thiab ntxiv rau. Qhov no hu ua Brownian zog.
Ib sab ntawm qhov no, dab tsi ua rau cov pa luam yeeb txav mus?
Brownian tsab ntawv tsa suab yog pov thawj tias huab cua molecules txav nyob rau hauv random cov lus qhia, nrog random speeds (thiab li no kinetic zog). Thaum cov huab cua molecules no tsoo rau hauv cov pa luam yeeb , lawv ua rau cov cov pa luam yeeb kom txav mus nyob rau hauv random tsab ntawv tsa suab.
Nws txhais li cas thaum kuv pom me ntsis me ntsis ntawm lub teeb?
Streaks lub me ntsis ntawm lub teeb hauv koj lub zeem muag yog piav raws li flashes. Lawv tau tshwm sim thaum koj bang koj lub taub hau los yog ntaus lub qhov muag. Lawv tau kuj tshwm sim hauv koj lub zeem muag vim koj lub retina yog raug rub los ntawm cov gel hauv koj lub qhov muag. Teeb yuav tsum yuav tsum ceev faj yog tias koj nyob nraum pom lawv nquag.
Pom zoo:
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