Ingcindezi ngokweqile - lokho nokuthi ...

Ngezinye izikhathi, ekhumbula ukuthi yonke iminyaka zisesikoleni, kokukhumbula izifundo i-chemistry, i-physics. Banweba engibheka emngceleni ngokusebenzisa Ukujwayelana nalesi noma ezinye imiqondo ngokomzimba. Ezinye zazo engafuni "bayoba nezimpande ngaphansi". Mhlawumbe ngoba avame ezashiwo incazelo utitjhere akukafaneli kobana isithombe othize emzimbeni, kodwa sasingababonayo amandla, ekuqaleni, imiqondo abstract.

Lapha m - yonke into icacile. Isikhathi, futhi, kubonakala sengathi abanalo imibuzo, iwashi - intandokazi ebuntwaneni ithoyizi, tick-tock, ngokuzikhandla. Imitha, ihora, kwesibili - ubunjalo bomzimba of "ukukhula" ku ukwazi. Kodwa cabanga 10 km emoyeni ukuthi 'uchoboze "ngosuku wena ebusuku, ngokuzikhandla, futhi ngokuthi lyrical futhi engaqondakali - the umfutho womoya. Futhi kuvela ukuthi lokhu akuyona yonke, kukhona ingcindezi omuhle, futhi osmotic, futhi igazi, futhi ... ngibalethe inombolo, zonke lezi zingcindezi. Nokho, ngokuhamba kwesikhathi, konke lokhu iwela indawo, kodwa nahlulele kusukela izinkundla Inthanethi, imibuzo on izici ezihlukahlukene "ingcindezi" umqondo bebelokhu, nokuthi kuyoba. Ngakho kuyini - ingcindezi?

Okwakushiwo ngokoqobo "ingcindezi" umqondo itholakala lokuthi ukuthi lo mbuso isici ethize - umthwalo per unit endaweni. Iyiphi into esizungezile, njalo "asekelwe", okuyinto ubeka ingcindezi iyiphi indawo - itafula, a sill iwindi, ame, umgwaqo. Indlela ukunquma ngubani umthwalo omkhulu endleleni - ithangi noma abahamba phezu kwalo muntu? Lona lapho umqondo ukusiza ngokomzimba ubuningi "ingcindezi", ebalwa ngesisekelo nezinye lucobo. Ukuze wenze lokhu, uthole isisindo into futhi endaweni ukwesekwa yayo. Isisindo ehlukaniswa isikwele uthole ukubaluleka ingcindezi - inani isisindo per unit endaweni ka, bathi, noma ingaba isentimitha nje isikwele. Manje singasho ngokuqiniseka ukuthi ayengobani ingaphezu "ukuphokophela".

Futhi angisho manje, owaqala wasikisela ukuthi "ikholomu" umoya owodwa isentimitha isikwele ukuphakama 100 km, it is evamile kubhekwa ukuphakama Umkhathi, ngokuthi umfutho womoya. Uma ukuphakama zero ezingeni ukuthatha izilwandle zomhlaba, ukubaluleka kwamanani ka umfutho womoya Ratm, futhi ibizwa nangokuthi i lemali barometric-1 kg / cm sq. Kwenzeka isimanga ngokomlando ukuthi lokhu ubuningi ngokomzimba emangalisayo - omunye umoya uyalingana 1 kg / cm sq. - it has prototypes eziningana. Ikakhulu, i-asetshenziswa kabanzi isilinganiso okufana ngamamilimitha mercury - 1 umoya kulingana 760 torr At ukuphakama sihluke Zomhlaba "ezicindezelayo" kukholomu emoyeni lihlukile, futhi ingcindezi kukalwa barometer, nge ushintsho engamamitha siyashintsha. Ngokwesibonelo, ezingeni ukuphakama 5 km barometric ingcindezi 405 mmHg

Amanye amagama ongakhetha Pressure ihlukaniswa ngokweminyaka ubuhlobo babo barometer. Ngokwesibonelo, ngokuvamile usetshenziselwa ukwenza art gauge kudivayisi izinyathelo ingcindezi geji. Ukunqunywa nemisindo, okuyinto kubhekwa ingcindezi ngokweqile in the uhla ngenhla futhi abonisa Rati yayo barometric. In izicelo lobuchwepheshe ngokuvamile kulinganiswa ngokunembile overpressure.

Mhlawumbe esingaphansi umfutho womoya? Yiqiniso, lapho libizwa ngokuthi a cleaner. cleaner Ingabe Ohulumeni Banalo Lonke - a ingcindezi esilingana ngokuphelele zero - engaphansi kungenzeki. Ngakho-ke, uma sithatha ke njengendlela yekucala, nanoma ikuphi ukucindezela ngaphezu kuka-zero ibizwa ngokuthi i ngokuphelele, futhi kuhluka zero noma iyiphi inombolo, futhi bamele Manpower yayo.

ukubala ngokweqile kanjani ukucindezela? Ifomula ukubala ingcindezi ngokuphelele kuyinto yefomu:

Manpower = Ratm + Rati

Yingakho akunzima ukubala ukucindezela ngokweqile, njengoba umehluko phakathi:

Rati = Manpower - RATM

Ingcindezi, kokuba inkulumo elula kohlaziyo, ngeshwa, has a zalelo nani elikhulu amayunithi ukuthi ochwepheshe kuphela bayayizwisisa. I ewusizo kunazo kwalokhu bar, Pascal, kg / sq cm. nemikhiqizo yalo ne ticalo hecto mega, Giga.

I SI iyunithi ingcindezi - Pascal - ungamandla elilodwa Newton ku endaweni eyodwa imitha square. Ngu uqobo, n / m. value ezinjalo ezincane ukuthi isetshenziswa umkhuba ibha yayo esuselwe okuyinto cishe 100 KPA noma 750 mm HG, isb cishe 1 kg / sq cm. Lapha it is, indingilizi ivaliwe - futhi sifika amahle olusankondlo ingcindezi iyunithi - emkhathini. Nokho, kulesi simo, ubizwa ngokuthi "umoya lobuchwepheshe", futhi ngokuvamile lokho kugcina bunye, by amandla esejwayezi ayenza, ingcindezi ngokweqile kukalwa. Uhla oluphelele lolwazi afanayo asetshenziswa ezindaweni ezahlukene ingcindezi kuthatha emakhasini omcane.

Kunjalo elula ingcindezi ecacile ikhule ibe Maze Tangled amayunithi abo. Kodwa asikho isizathu sokukhathazeka - kukhona njalo incwadi iyinto ewusizo ongabheka kuyo noma inthanethi ....