Video: Nyob rau hauv lub xeev ntawm qhov teeb meem diffusion yog ceev tshaj?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Diffusion tshwm sim hauv txhua lub xeev ntawm cov teeb meem, los ntawm cov khoom mus rau cov kua gas . Diffusion tshwm sim sai tshaj plaws thaum muaj teeb meem hauv nws gaseous xeev. Diffusion yog, yooj yim heev, txav ntawm cov molecules los ntawm qhov tsis khoom ntau, lossis "tso siab", thaj tsam rau ib qho ntawm tsawg dua concentration.
Tsis tas li ntawd, nyob rau hauv lub xeev twg diffusion yog ceev tshaj plaws thiab tsawg tshaj plaws?
Diffusion tshwm sim hauv cov roj, kua thiab cov khoom khib nyiab. Diffusion yog ceev tshaj plaws hauv gases thiab qeeb tshaj plaws hauv cov khib nyiab. Tus nqi ntawm nthuav tawm nce qhov kub thiab txias ntawm cov khoom diffusing.
Ib yam li ntawd, vim li cas diffusion qeeb tshaj plaws hauv cov khoom thiab ceev tshaj plaws hauv cov roj? nthuav tawm hauv cov pa yog cov ceev tshaj plaws vim cov particle hauv cov pa txav ceev heev nyob rau hauv tag nrho cov lus qhia. nthuav tawm hauv solids yog cov qeeb tshaj plaws vim particles khov kho tsis txhob txav los ntawm lawv txoj haujlwm ruaj khov.
Ua li no, nyob rau hauv lub xeev ntawm teeb meem diffusion yog dab tsi?
Diffusion tshwm sim hauv txhua lub xeev ntawm cov teeb meem: khoom, ua kua , thiab gas . Nws tshwm sim sai txaus kom pom tau hauv lub sijhawm tsim nyog, txawm li cas los xij, tsuas yog hauv kua thiab cov pa.
Vim li cas diffusion sai dua hauv cov pa roj ntau dua li cov kua dej?
vim gas molecules muaj zog kinetic ntau dua thiab me dua tshaj li kua molecules. nthuav tawm hauv kua yog qeeb vim hais tias nyob rau hauv a ua kua txav qeeb dua. nws tshwm sim sai dua yog tias qhov kub thiab txias tau nce.
Pom zoo:
Dab tsi yog qhov txawv ntawm magnification thiab daws teeb meem ntawm ib daim duab nyob rau hauv lub tshuab microscope?
Magnification yog lub peev xwm ua kom cov khoom me me zoo li loj dua, xws li ua kom pom cov kab mob microscopic. Kev daws teeb meem yog qhov muaj peev xwm paub qhov txawv ntawm ob yam khoom ntawm ib leeg. Lub teeb microscopy muaj kev txwv rau ob qho tib si nws qhov kev daws teeb meem thiab nws qhov loj
Yuav ua li cas wavelength muaj feem xyuam rau qhov ceev ntawm lub teeb nyob rau hauv ib tug nruab nrab?
Qhov ceev ntawm lub teeb nyob rau hauv nruab nrab yog v = cn v = c n, qhov twg n yog nws qhov Performance index ntawm refraction. Qhov no txhais tau tias v = fλn, qhov twg λn yog lub wavelength nyob rau hauv nruab nrab thiab hais tias λn=λn λ n = λ n, qhov twg λ yog lub wavelength nyob rau hauv lub nqus tsev vacuum thiab n yog qhov nruab nrab qhov ntsuas ntawm refraction
Dab tsi yog qhov teeb meem ntawm lub teeb nyob rau hauv lub ntuj hmo ntuj hu ua?
Gegenschein, tseem hu ua Counterglow, oval thaj ntawm faint luminosity raws nraim rau lub hnub nyob rau hauv lub hmo ntuj. Lub thaj ntawm lub teeb yog li faint nws tuaj yeem pom tsuas yog thaum tsis muaj lub hli, nyob deb ntawm lub nroog teeb, thiab nrog lub qhov muag yoog rau qhov tsaus ntuj
Lub xeev twg ntawm cov teeb meem twg muaj zog tshaj intermolecular rog ntawm attraction?
Raws li qhov kub thiab txias tseem poob qis, qhov teeb meem tsim muaj zog. Vim tias cov khoom tsis muaj zog kinetic, cov khoom tsis muaj 'lub sij hawm' txav mus los, cov khoom muaj 'lub sij hawm' kom nyiam. Yog li ntawd, cov khib nyiab muaj qhov muaj zog tshaj plaws intramolecular rog (vim lawv muaj qhov muaj zog tshaj plaws)
Dab tsi yog qhov txawv ntawm instantaneous thiab nruab nrab ceev dab tsi yog qhov piv txwv loj tshaj ntawm kev ceev ceev?
Qhov nruab nrab ceev yog qhov ceev nruab nrab ntawm lub sijhawm. Instantaneous ceev yuav yog qhov ceev txhua qhov muab tam sim ntawd hauv lub sijhawm ntawd, ntsuas nrog lub ntsuas ntsuas lub sijhawm