Video: Yuav ua li cas tshwm sim thaum ob qhov zoo tib yam nthwv dej uas tawm ntawm theem nrog ib leeg ua ke?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Ob yoj nrog tib zaus thiab theem yuav muab sib xyaw ua ke tsim ib lub suab ntawm ntau dua amplitude-qhov no yog hu ua constructive interference. Ob tug zoo tib yam nthwv dej 180 degrees tawm ntawm theem yuav rho tag nrho sib tawm nyob rau hauv ib tug txheej txheem hu ua theem tshem tawm lossis cuam tshuam kev puas tsuaj.
Ib yam li ib tug yuav nug, yuav ua li cas thaum ob lub nthwv dej sib xyaw ua ke?
Wave kev cuam tshuam yog qhov phenomenon uas tshwm sim thaum ob nthwv dej ntsib thaum taug kev raws tib qhov nruab nrab. Kev cuam tshuam ntawm nthwv dej ua rau qhov nruab nrab coj mus rau ib qho duab uas tshwm sim los ntawm cov nyhuv net ntawm cov ob tus kheej nthwv dej nyob rau ntawm qhov nruab nrab.
Tsis tas li ntawd, cov nthwv dej puas cuam tshuam nrog ib leeg? Wave sib cuam tshuam nrog teeb meem nyob rau hauv ntau txoj kev. Cov kev sib tham tshwm sim thaum nthwv dej kis los ntawm ib qho nruab nrab mus rau lwm qhov. Hom ntawm kev sib tham yog reflection, refraction, thiab diffraction. Txhua hom ntawm kev sib tham tau piav qhia hauv qab no.
Nyob rau hauv txoj kev no, dab tsi yog tsim thaum ob nthwv dej ntawm tib zaus cuam tshuam nrog ib leeg hauv cov lus qhia tawm?
Kev puas tsuaj cuam tshuam tshwm sim thaum nthwv dej tuaj ua ke nyob rau hauv xws li ib txoj kev uas lawv tag nrho ib leeg tawm. Thaum twg ob nthwv dej cuam tshuam destructively, lawv yuav tsum muaj tib yam amplitude hauv ntxeev lus.
Dab tsi yuav tsum muaj rau ob lub teeb nthwv dej kom cuam tshuam rau ib leeg?
Cov xwm txheej rau cuam tshuam . Txhawm rau teeb tsa qhov ruaj khov thiab meej cuam tshuam qauv, ob Cov xwm txheej yuav tsum tau ua tiav: Cov peev txheej ntawm cov nthwv dej yuav tsum tau coherent, uas txhais tau hais tias lawv emit zoo tib yam nthwv dej nrog rau theem tsis tu ncua. Cov nthwv dej Lawv yuav tsum yog monochromatic - lawv yuav tsum yog ntawm ib lub wavelength.
Pom zoo:
Dab tsi tshwm sim ntawm Theodor Engelmann qhov kev sim nto moo qhia rau nws uas wavelength S yog tus tsav tsheb zoo tshaj plaws ntawm photosynthesis?
Cov kab mob sib sau ua ke ntau tshaj plaws nyob ze ntawm ib feem ntawm cov alga uas tau nthuav tawm cov xim liab thiab xiav wavelengths. Engelmann qhov kev sim ua kom pom tias lub teeb liab thiab xiav yog lub zog zoo tshaj plaws rau photosynthesis
Tus qauv yuav pab nrhiav qhov tshwm sim ntawm qhov kev tshwm sim sib xyaw li cas?
Lub ntsiab lus ntawm Qhov Muaj Peev Xwm Txheej Txheej Txheej Txheej Txheej Txheej Txheej Txheej Txheej Txheej Txheej Txheej yog ib qho uas muaj ntau tshaj li qhov ua tau. Kev txiav txim siab qhov yuav tshwm sim ntawm qhov kev tshwm sim sib xyaw suav nrog kev nrhiav cov lej ntawm qhov tshwm sim ntawm tus kheej cov xwm txheej thiab, yog tias tsim nyog, tshem tawm qhov muaj feem sib tshooj
Yuav ua li cas yog qhov tshwm sim uas ib tug poj niam dig muag xim uas yuav ib tug txiv neej uas tsis pom kev zoo yuav muaj xim dig muag me nyuam?
Yog tias tus poj niam uas muaj lub zeem muag zoo li no (heterozygous rau qhov muag tsis pom xim) yuav ib tug txiv neej ib txwm muaj (XY), cov xeeb ceem hauv qab no tuaj yeem xav tau hauv F2 tiam: ntawm cov ntxhais, 50% yog ib txwm muaj thiab 50% yog cov neeg nqa khoom rau cov kab mob; ntawm cov tub, 50% yog xim dig muag thiab 50% yog qhov pom kev zoo
Yuav ua li cas koj pom qhov tshwm sim ntawm qhov tshwm sim tsawg kawg ib zaug?
Txhawm rau xam qhov tshwm sim ntawm qhov tshwm sim tshwm sim tsawg kawg ib zaug, nws yuav yog qhov sib ntxiv ntawm qhov xwm txheej tsis tshwm sim. Qhov no txhais tau hais tias qhov tshwm sim ntawm qhov tshwm sim yeej tsis tshwm sim thiab qhov tshwm sim ntawm qhov tshwm sim tsawg kawg ib zaug yuav sib npaug, lossis 100% txoj hauv kev
Yuav ua li cas tshwm sim rau qhov teeb meem uas ploj ntawm txhua theem ntawm cov khoom noj khoom haus?
Lub zog tau dhau los ntawm cov khoom noj khoom haus los ntawm ib qib trophic mus rau lwm qhov. Txawm li cas los xij, tsuas yog kwv yees li 10 feem pua ntawm tag nrho lub zog khaws cia hauv cov kab mob ntawm ib qib trophic tau raug xa mus rau cov kab mob ntawm qib trophic tom ntej. Cov seem ntawm lub zog yog siv rau cov txheej txheem metabolic lossis poob rau ib puag ncig raws li cua sov