Video: Koj puas pom ib ncig ntawm cov ces kaum?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Cov lus teb yuav suav nrog thaum tsis muaj lub teeb thiab thaum ib yam dab tsi tsis ncaj nraim nrog lawv ob lub qhov muag. Yog li ntawd thaum tsaus ntuj los yog thaum ib yam khoom tsis nyob rau hauv txoj kab nrog peb ob lub qhov muag, peb ua tau 't saib nws. Qhia tawm tias lub teeb tsuas yog nyob hauv txoj kab ncaj nraim-nws ua tau tsis khoov nyob ib ncig ntawm cov ces kaum.
Ib yam li ntawd, nws txhais li cas kom pom ib ncig ntawm cov ces kaum?
Lub Xya Hli 1, 2007. Nyob zoo. Re: " pom ib ncig ntawm cov ces kaum "Qhov no txhais tau tias nws muaj peev xwm cia siab tias yuav muaj teeb meem ua ntej lawv tshwm sim qhov twg txhais tau tias nws tuaj yeem khaws nws txoj haujlwm nyob rau hauv lub hauv ntej ntawm kev lag luam. Yog li yog nws yog ib hom "foresight" lossis lub peev xwm ntawm lub hlwb.
Qhov thib ob, lub teeb tuaj yeem tig kaum? Yog lawm, teeb tau khoov ib ncig kaum . Qhov tseeb, teeb ib txwm khoov ib ncig kaum rau qee qhov. Qhov no yog ib qho khoom ntiag tug ntawm teeb thiab tag nrho lwm cov nthwv dej. Lub peev xwm ntawm teeb khoov ib ncig kaum tseem hu ua "diffraction".
Tsis tas li ntawd, koj ua li cas tsom iav ib ncig ntawm lub ces kaum?
Lub periscope tso cai rau tib neeg mus pom ib ncig ntawm cov ces kaum los yog saib saum phab ntsa. Sab hauv, ib tug series ntawm iav ua hauj lwm ua ke los coj lub teeb los ntawm ib qho kawg ntawm lub periscope mus rau tus neeg saib lub qhov muag ntawm lwm qhov kawg. Ua raws li cov lus qhia no los ua ib qho periscope ntawm koj tus kheej.
Yuav ua li cas thaum koj saib ntawm lub periscope?
Hauv tus periscope , lub teeb hits daim iav saum toj kawg nkaus ntawm 45 ° thiab pom deb ntawm tib lub kaum sab xis. Lub teeb ces bounces mus rau hauv qab daim iav. Thaum lub teeb pom kev ntawd tsoo rau daim iav thib ob nws rov qab los ntawm 45°, rau rau hauv koj qhov muag. Koj pom tau qhov no hauv daim duab ntawm txoj cai.
Pom zoo:
Cov kab lus hloov sab hauv cov ces kaum piav qhia txoj haujlwm ntawm ob lub kaum sab xis li cas?
Hloov sab hauv cov ces kaum yog tsim los ntawm ib tug transversal intersecting ob parallel kab. Lawv nyob nruab nrab ntawm ob qho tib si kab tab sis nyob rau sab nraud ntawm lub transversal, tsim ob khub (plaub tag nrho cov ces kaum) ntawm cov ces kaum sab hauv. Hloov cov ces kaum sab hauv yog congruent, txhais tau tias lawv muaj qhov sib npaug
Yuav ua li cas koj nrhiav tau tus kab pheeb ces kaum ntawm txoj cai kaum sab xis?
Txhawm rau nrhiav qhov ntev ntawm kab pheeb ces kaum (orhypotenuse) ntawm txoj cai daim duab peb sab, hloov qhov ntev ntawm ob sab perpendicular rau hauv cov mis a2 + b2 = c2, qhov twg a thiab b yog qhov ntev ntawm sab perpendicular thiab c yog qhov ntev ntawm lub hypotenuse
Dab tsi yog qhov flux los ntawm lub voos xwmfab ntawm sab yog tias tus nqi ntawm Q yog ntawm ib qho ntawm nws lub ces kaum?
Raws li peb paub tias, tag nrho cov flux los ntawm tus nqi q yog q / ε 0 (Gauss txoj cai). Yog hais tias tus nqi yog nyob rau ntawm lub ces kaum ntawm lub voos xwmfab, ib co ntawm cov flux nkag mus rau hauv lub voos xwmfab thiab tawm los ntawm ib co ntawm nws lub ntsej muag. Tab sis qee qhov flux tsis nkag mus rau hauv lub voos xwmfab. Qhov 1/8th no yuav muab faib ua 3 ntu dua
Ib puag ncig ntawm ib lub xov tooj ntawm tes thiab cov kab mob cuam tshuam li cas ntawm cov noob caj noob ces?
Splicing ntawm mRNA nce tus naj npawb ntawm cov protein sib txawv uas lub cev muaj peev xwm tsim tau. Gene qhia yog tswj los ntawm cov proteins uas khi rau cov hauv paus hauv paus hauv DNA. Ib puag ncig ntawm ib lub xovtooj ntawm tes thiab ntawm lub cev muaj feem cuam tshuam rau cov noob caj noob ces
Yuav ua li cas koj pom cov ces kaum hauv parallelogram?
Properties of parallelograms Ob sab yog congruent (AB = DC). Cov tubtxib saum ntuj yog congruent (D = B). Lub kaum sab xis yog ntxiv (A + D = 180 °). Yog tias ib lub kaum sab xis yog, ces txhua lub kaum sab xis yog. Lub diagonals ntawm ib qho parallelogram bisect ib leeg. Txhua kab pheeb ces kaum ntawm parallelogram cais nws mus rau hauv ob daim duab peb sab