Video: Concave thiab convex meniscus yog dab tsi?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
A concave meniscus , uas yog qhov koj ib txwm yuav pom, tshwm sim thaum cov molecules ntawm cov kua yog attracted tothose ntawm lub thawv. Qhov no tshwm sim nrog dej thiab lub khob raj. A convex meniscus tshwm sim thaum cov molecules muaj ib tug muaj zog traction rau ib leeg tshaj li rau lub thawv, xws li mercury thiab iav.
Tsis tas li ntawd, dab tsi ua rau meniscus convex?
Ib concave meniscus tshwm sim thaum cov khoom ntawm cov kua muaj zog txaus nyiam rau hauv lub thawv (adhesion) dua li rau ib leeg (cohesion), ua rau cov kua nce toj phab ntsa ntawm lub thawv. Convex menisci tshwm sim, piv txwv li, ntawm mercury thiab iav hauv barometers thiabthermometers.
Dhau li ntawm saum toj no, cov kua dej dab tsi muaj convex meniscus? A meniscus yog ib theem ciam teb uas muaj tau nkhaus vim yog nto nro. Nyob rau hauv cov ntaub ntawv ntawm dej thiab feem ntau kua , cov meniscus yog concave. Mercuryproduces ib convex meniscus.
Yog li ntawd, yog vim li cas Mercury thiaj li muaj ib tug convex meniscus?
Mercury ua tsis ntub iav - lub cohesive rog nyob rau hauv lub tee yog muaj zog tshaj cov nplaum rog ntawm cov tee dej thiab iav. Thaum ua kua mercury yog nyob rau hauv ib lub raj, nws nto ( meniscus ) muaj convex zoo vim lub cohesive rog hauv kua mercury nyiam kos nws rau hauv adrop.
Dab tsi yog meniscus thiab koj nyeem nws li cas?
Concave menisci yog nyeem los ntawm lub hauv qab ntawm qhov nkhaus ntawm qhov muag. A meniscus yog ib qho nkhaus tsim nyob rau saum npoo ntawm cov kua hauv ib lub thawv. Qhov nkhaus no yog tsim los ntawm qhov nro ntawm cov kua thiab lub thawv ntim cov kua. Ib hom kua uas tsim ib lub convex meniscus yog kua mercury.
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