Kuyini uketshezi non-Newton? Izibonelo kanye Ukuhlolwa

Kuyini uketshezi non-Newton? Izibonelo kufanele kwenzeke ukuba sibone ngisho efrijini lakho, kodwa isibonelo osobala kakhulu ngokwesayensi isimangaliso kubhekwe esihlabathini esimanzi esiwukuphila - uketshezi okuqinile ngesikhathi esifanayo sibonga isikhathi a kwesamba (okwesikhashana) izinhlayiya.

mayelana viscosity

Mnumzane Isaak Nyuton wagomela ngokuthi viscosity noma ukumelana ukugeleza uketshezi incike lokushisa. Ngakho, ngokwesibonelo, amanzi iphenduka iqhwa futhi emuva kuba ngaphansi kwethonya Ukushisa noma Ukupholisa ngomoya izakhi. Nokho, ezinye izinto ezikhona emhlabeni, ushintsho viscosity ngenxa isicelo force, kunokuba nokushintshashintsha kwezinga lokushisa. Ngokuthakazelisayo, uketshezi non-Newton ubizwa evame ukusetshenziswa utamatisi sauce okuyinto kuba ohlabayo enikeziwe eshukumisayo isikhathi eside. Cream, Ngakolunye uhlangothi, ukushwaqa lapho enza. Lezi izinto akuxhomekile lokushisa - viscosity non-Newton uketshezi izinguquko ngenxa umthelela ngokomzimba.

experiment

Kulabo abathanda isayensi isicelo, noma ufuna ukujabulisa izivakashi zakho nabangane ngendlela emangalisayo elula kodwa okumangazayo ukuthi kumnandi isayensi ucwaningo wadala iresiphi olukhethekile isixazululo isitashi colloidal. Lolu ketshezi-non-Newton, ezandleni basuke ngokoqobo ngezincwadi ezimbili izithako ukupheka ezivamile hit nokuvumelana kwabo kanye nezingane zesikole nabafundi. Okudingayo isitashi kanye namanzi ahlanzekile, futhi ekugcineni uthole into eyingqayizivele, okuyinto kokubili liquid kanye okuqinile.

iresiphi

• Thela cishe ikota yebahlali isembozo corn isitashi ube isitsha ehlanzekile kancane uthele ingxenye enkomishini yamanzi. Govuza. Ngezinye izikhathi isimo sikuvumela ukulungiselela isixazululo isitashi colloidal isandla sokunene.
• Qhubeka ukuze wengeze isitashi namanzi izingxenyana ezincane, inqobo nje uma ungatholi ketshezi, e ukungaguquguquki sifana uju. Lokhu esizayo uketshezi non-Newton. Kanjani ukuze kube sengathi eyohlobo uma yonke imizamo iphele ukwehluleka ibangele iyunifomu? Ungakhathazeki; nje ukunikeza inqubo isikhathi esengeziwe. Ngenxa yalokho, omunye iphakethe of ngesitashi kakhulu cishe kuzothatha izibuko eyodwa kuya amabili amanzi. Qaphela: ketshezi kuba kwabantu njengoba kukho konke powder ngaphezulu.
• Thela izidakamizwa okuholela ibe uyithose pan noma baking dish. Bheka ku ukuthungwa yayo engavamile njengoba uketshezi "okuqinile" ethela phansi. Hlanganisa izinto e umunwe umbuthano Inkomba - lokuqala kancane ke ngokushesha, kuze ungatholi an amazing uketshezi non-Newton.

ucwaningo

Njengoba ngenjongo ulwazi lwesayensi, futhi nje for fun, ungazama ukuhlolwa ezilandelayo:

• Swayipha umunwe wakho yonkana kobuso ihlule okuholela. Ingabe yini uphawule?
• Gxila lonke esandleni ngoqobo ongaqondakali futhi uzama ukumpintsha iminwe yayo futhi ukuyikhipha kusukela emgqonyeni.
• Zama Roll ketshezi, ngezandla zakhe, ngezimpama ibhola.
• Kungenzeka ngisho nangawo onke amandla akhe ukuze ngezimpama phezu ihlule entendeni. Ukuba khona izibukeli ngokuqinisekile abalekele ohlangothini, esabalindele manje splattered isixazululo isitashi, kodwa nemiyo engavamile izohlala kule esitsheni. (Ngaphandle kokuba Yiqiniso, ngeke uzisole isitashi.)
• Okumangalisayo-experiment videoblogery sipho. Ngaye udinga ikholomu umculo, okufanele ngokucophelela obtyanut obukhulu ukudla ukugoqa ngongqimba eziningana. Thela isixazululo ku ifilimu bese uvula umculo ezingeni elilinganiselwe okusezingeni eliphezulu. Ungabuka emangalisa sibonwa imiphumela kungenzeka kuphela ukusetshenziswa kwalokhu kuqamba esiyingqayizivele.

Uma baqhuba ukuhlola endaweni yokucwaninga zesikole noma abafundi, ukubabuza ukuthi kungani uketshezi non-Newton liziphatha ngale ndlela. Ngesizathu esithile, kubonakala okuqinile uma ngawakhamela it esandleni sakho, kodwa yiyo like isiraphu, uma unclench iminwe yakho? Ekupheleni kwengxoxo kungenziwa ihlule phama esikhwameni esikhulu plastic nge uziphu ukuyigcina kufika esikhathini esizayo. Kuyoba wusizo kuwe lokubonisa izakhiwo slurry.

Ingqikithi imfihlakalo

Kungani kwezinye isixazululo ezimweni colloidal isitashi liziphatha njengoba umzimba esingashintshi, futhi enye - njengoba uketshezi? Empeleni, kwadingeka ukudala real-non-Newton uketshezi - ikhemikhali, enqaba umthetho viscosity.

Newton kubhekwe ukuthi viscosity ketshezi washintsha ngenxa ukuba sikhuphule noma sehlise izinga lokushisa kuphela. Ngokwesibonelo, amafutha engine ageleza kalula lapho ukufuthelana kanye of ukushuba ikakhulukazi lapho selehlile. ngqó, impendulo ingu uketshezi non-Newton futhi ingaphansi kwalo mthetho ngokomzimba, kodwa viscosity yabo kungashintshwa futhi ukusetshenziswa kwamandla noma ingcindezi. Uma ngawakhamela ihlule Colloid esandleni sakhe, ukuminyana yayo inyuka kakhulu, futhi (okungenani okwesikhashana) sengathi abangu yena kuphenduke okuqinile. Uma decompress isibhakela isixazululo colloidal ageleza like uketshezi evamile.

Into okufanele siyikhumbule

Indida enkulu iwukuthi akunakwenzeka uhlanganise isitashi ngamanzi phakade, ngenxa ukuhlola, uthola hhayi into eyohlobo, kanye nokumisa. Ngokuhamba kwesikhathi, izinhlayiya powder kungase ikhasi off kusukela amangqamuzana awuketshezi ziyobuthelwa ku yinhlama kanzima ezansi esikhwameni sakho plastic. Kungenxa yalesi sizathu ukuthi uketshezi non-Newton yilezi zinto ngokuphazima kweso clog amapayipi amapayipi, uma nje ukuthatha uwathele phansi echibini. Akunakusetshenziswa musa uwathele phansi abakhwabanisi - kangcono okupakisha esikhwameni nje aphonse ku nokulahla udoti.