Yuav ua li cas yog ib tug uas tsis yog-Newtonian kua? Piv txwv thiab Thwmsim

Yuav ua li cas yog ib tug uas tsis yog-Newtonian kua? Piv txwv yuav tsum tau mus ntes txawm nyob rau hauv koj lub fridge, tiam sis feem ntau pom tseeb Piv txwv ntawm scientific txuj ci tseem ceeb xam tau tias yog av nqu - kua thiab khoom nyob rau tib lub sij hawm ua tsaug rau ib tug weighted (suspended) hais.

Hais txog viscosity

Sir Isaak Nyuton sib cav hais tias lub viscosity los yog kuj mus kua txaus nyob rau hauv lub kub. Yog li, piv txwv li, dej tej zaum yuav tig mus rau hauv cov dej khov thiab rov qab yog nyob rau hauv tus ntawm cov cua kub lossis cua txias ntsiab. Txawm li cas los, ib co tshuaj uas twb muaj lawm nyob rau hauv lub ntiaj teb no, lub viscosity hloov vim rau daim ntawv thov ntawm kev quab yuam, es kub hloov. Interestingly, qhov uas tsis yog-Newtonian kua yog xa mus rau feem ntau siv soob ntses uas yuav thinner muab heev zaj. Cov tshuaj nplaum, conversely, nkoog thaum whipping. Cov tshuaj tsis yog ib qho tseem ceeb kub - viscosity ntawm uas tsis yog-Newtonian kua hloov vim lub cev tej yam.

xyaum ua tej yam

Rau cov neeg uas xav nyob rau hauv ntaub ntawv science, los yog tsuas xav kom impress koj qhua thiab cov phooj ywg yog incredibly yooj yooj yim thiab tsis tau amazingly kev lom zem science thwmsim tsim ib tug tshwj xeeb daim ntawv qhia txog colloidal cov hmoov txhuv nplej tshuaj. Qhov no tsis yog-Newtonian kua, lub ob txhais tes yog cia ua los ntawm ob tug ntau ua noj ua haus khoom xyaw ntaus lawv taub hau thiab schoolchildren thiab menyuam kawm ntawv. Txhua yam koj xav tau yog cov hmoov txhuv nplej thiab dej huv, thiab nws thiaj li tau ib cim yeeb tshuaj, uas yog ob qho tib si ib tug ua kua thiab ib tug khoom.

daim ntawv qhia

• Ncuav hais txog ib tug peb lub hlis twg ntawm lub ntim ntawm cov pob kws cov hmoov txhuv nplej rau hauv ib tug huv lub tais thiab maj mam ncuav txog ib nrab ib khob ntawm cov dej. Do. Tej zaum nws yog ntau yooj yim los npaj ib tug colloidal cov hmoov txhuv nplej tshuaj cai ob txhais tes.
• Mus ntxiv cov hmoov txhuv nplej thiab dej nyob rau hauv me me feem, raws li ntev raws li koj tsis tau txais cov tshuaj yeeb dej caw, nyob rau hauv lub taub hau tsa cov zib ntab. Qhov no yav tom ntej uas tsis yog-Newtonian kua. Yuav ua li cas yuav ua rau nws homogeneous hais tias tag nrho cov me nyuam no xaus nyob rau hauv tsis ua hauj lwm stirring niaj hnub? Tsis txhob txhawj; cia li muab tus txheej txheem ntau lub sij hawm. Raws li ib tug tshwm sim, ib tug pob ntawm hmoov pob kws koj feem ntau yuav yuav coj ib mus rau ob tsom iav ntawm dej. Nco ntsoov: lub substance yuav ntau ceev raws li koj ntxiv mus rau nws tag nrho cov ntau hmoov.
• Ncuav lub resulting tshuaj mus rau hauv ib tug frying lauj kaub los yog ci phaj. Saib rau nws txawv kev ntxhib los mos raws li "khoom" kua pouring down. Tov khoom nyob rau hauv ib lub voj voog index ntiv tes - thawj maj mam, ces ceev thiab sai, kom txog thaum koj tsis tau txais ib qho amazing uas tsis yog-Newtonian kua.

thwmsim

Raws li rau lub hom phiaj ntawm kev txawj ntse, thiab cia li rau kev lom zem, koj sim tawm lub nram qab no thwmsim:

• Los so koj cov ntiv tes hla tus nto ntawm lub resulting los khov rau ntawd. Koj puas tau pom dab tsi?
• Raus tag nrho txhais tes nyob rau hauv mysterious tshuaj thiab ua kom nyem nws cov ntiv tes thiab rub tawm los ntawm lub thawv.
• Sim rau yob cov tshuaj yeeb dej caw nyob rau hauv nws ob txhais tes rau ncuav lub pob.
• Nws yog ua tau txawm nrog tag nrho nws lub dag lub zog rau ncuav rau hauv lub xibtes los khov rau ntawd. Qhov kuaj pom muaj tus neeg saib yeej khiav mus rau sab, tos lawv tam sim no splattered cov hmoov txhuv nplej daws, tiam sis ib qho txawv tshuaj yuav nyob twj ywm nyob rau hauv lub thawv. (Tsuas yog, ntawm chav kawm, koj yuav tsis khuv xim cov hmoov txhuv nplej.)
• Spectacular xyaum ua tej yam videoblogery kev. Rau nws koj xav tau ib tug music kem, uas yuav tsum tau ua tib zoo obtyanut tuab zaub mov qhwv nyob rau hauv ob peb khaubncaws sab nraud povtseg. Ncuav lub tshuaj nyob rau hauv cov zaj duab xis thiab tig mus rau ntawm cov suab paj nruag ntawm ib tug siab volume. Koj yuav saib tau lub stunning yeeb yam zoo tau tsuas yog nrog rau kev siv ntawm no cim muaj pes tsawg leeg.

Yog hais tias koj yog txoj kev xyaum ua tej yam nyob rau hauv txoj kev kuaj rau schoolchildren los yog menyuam kawm ntawv, thov kom lawv yog vim li cas uas tsis yog-Newtonian kua behaves nyob rau hauv no txoj kev. Rau ib txhia yog vim li cas, no mas, khoom thaum koj nyem nws nyob rau hauv koj txhais tes, tab sis nws ntws zoo li phoov, Yog hais tias koj unclench koj cov ntiv tes? Los ntawm kawg ntawm kev sib tham yuav tsum tau ntim los khov rau ntawd nyob rau hauv ib tug loj lub hnab yas nrog swb kom nws mus txog rau thaum lub sij hawm tom qab. Nws yuav pab tau rau koj kom pom lub zog ntawm cov slurry.

Tus paub tsis meej substance

Yog vim li cas nyob rau hauv tej rooj plaub colloidal cov hmoov txhuv nplej tshuaj behaves raws li ib tug txhav lub cev, thiab lwm yam - raws li ib tug kua? Nyob rau hauv qhov tseeb, koj yuav tsum tau tsim ib tug tiag tiag uas tsis yog-Newtonian kua - ib tug yeeb tshuaj, tsis tau cai ntawm viscosity.

Newton yog tias lub viscosity ntawm lub yam khoom uas yog hloov vim tsuas tsa los yog txo tus kub. Piv txwv li, cov roj cav ntws yooj yim thaum rhuab thiab ntawm kev thickness thaum txias. Nruj me ntsis hais lus, qhov uas tsis yog-Newtonian kua los kuj yuav no lub cev kev cai lij choj, tab sis lawv cov viscosity yuav raug hloov thiab los ntawm kev siv ntawm kev quab yuam los yog siab. Thaum koj nyem cov colloid los khov rau ntawd nyob rau hauv nws txhais tes, nws ceev nce ho, thiab (yam tsawg kawg ib ntus) raws li yog hais tias nws tau xa mus rau hauv ib tug khoom. Thaum koj decompress nrig colloidal tshuaj ntws zoo li ib tug qub kua.

Qhov kom nyob rau hauv lub siab

Niaj hnub nim no yog hais tias nws yog tsis yooj yim sua kom sib tov lub hmoov txhuv nplej nrog cov dej mus ib txhis, raws li ib tug tshwm sim ntawm qhov xyaum ua tej no, koj tau tsis yog ib tug homogeneous yeeb tshuaj, thiab ncua kev kawm ntawv. Thaum lub sij hawm, lub hmoov hais yuav dhas tawm los ntawm cov dej lwg me me yuav sib sau ua ke rau hauv ib lub zog pob nyob rau hauv qab ntawm koj lub hnab yas. Nws yog vim li no hais tias xws li ib tug uas tsis yog-Newtonian kua instantly txhaws dej kav, yog tias koj cia li coj thiab ncuav mus rau hauv lub dab ntxuav tes. Nyob rau hauv tsis muaj cov ntaub ntawv tsis ncuav nws cia lub ntws - zoo dua rau pob nyob rau hauv ib lub hnab thiab cia li muab pov rau hauv lub thoob khib nyiab pov tseg.