2024 Tus sau: Luke Adderiy | [email protected]. Kawg hloov kho: 2024-01-10 19:34
Vim nws cov thermal conductivity tsis tshua muaj siab, lub sijhawm superfluid ntawm helium-4 yog qhov ua kom txias zoo rau cov hlau nplaum loj, thiab ob qho tib si isotopes muaj qee qhov kev siv los ua cov khoom kuaj kab txawv. particles.
Dab tsi yog superfluidity siv rau?
Superfluids tuaj yeem siv tau hauv gyroscopes, txhawm rau pab cov cav tov kwv yees cov ntaub ntawv hais txog lub ntiajteb txawj nqus txav uas tsis tuaj yeem nqa nrog cov twj paj nruag ib txwm muaj.
Dab tsi yog qhov teeb meem superfluid?
: qhov txawv txav ntawm qhov teeb meem tau sau tseg tsuas yog hauv cov kua helium txias kom ze rau qhov tsis muaj tseeb thiab tus yam ntxwv los ntawm qhov tsis muaj kev sib txhuam (xws li los ntawm cov qhov zoo)
Dab tsi qhia cov khoom muaj txiaj ntsig zoo?
Superfluidity yog cov yam ntxwv ntawm kua nrog xoom viscosity uas yog li ntws yam tsis muaj kev poob ntawm lub zog kinetic. Thaum nplawm, ib qho superfluid tsim vortices uas txuas ntxiv tig mus tas li.
Yuav nrhiav tau superfluidity li cas?
Nyob rau xyoo 1927 Willem Keesom thiab Mieczyslaw Wolfke xaus lus tias cov kua helium tau hloov mus rau theem ntawm 2.2 K. … Qhov txiaj ntsig zoo kawg li, helium II yog superfluid, tau pom thawj zaug hauv 1937thiab luam tawm thaum Lub Ib Hlis 1938, los ntawm Pyotr Kapitsa hauv Moscow, thiab nws tus kheej los ntawm John F.
Pom zoo:
Vim li cas qhov tseem ceeb ntawm koj lub hom phiaj tseem ceeb?
Ua ntej koj lub hom phiaj yuav txo qis kev ntxhov siab, txuag sijhawm, thiab txhawb kev tsim khoom. … Ua ib daim ntawv teev npe yuav tsum ua nrog txhua yam ntawm cov haujlwm niaj hnub mus rau cov hom phiaj tseem ceeb . Koj ua li cas ua ntej koj lub hom phiaj?
Puas yog qhov tseem ceeb ntawm txoj kev tseem ceeb?
Milestones nquag siv los saib xyuas kev nce qib, tab sis muaj kev txwv rau lawv cov txiaj ntsig. Lawv feem ntau qhia kev nce qib ntawm txoj hauv kev tseem ceeb xwb, thiab tsis quav ntsej cov haujlwm tsis tseem ceeb . Puas yog ib qho tseem ceeb ntawm txoj kev tseem ceeb?
Vim li cas lub ntsiab lus tseem ceeb yog qhov tseem ceeb?
Ntawm no yog ib feem tseem ceeb ntawm Asmeskas kev nom kev tswv vim nws ua kom ntseeg tau tias, qhov twg Tebchaws Meskas Txoj Cai Lij Choj muab lub zog rau tsoomfwv hauv tebchaws, cov cai tswjfwm los ntawm tsoomfwv lub tebchaws tshaj tawm- lossis ua qhov tseem ceeb - dhau cov kev cai lij choj los ntawm tsoomfwv lub xeev .
Vim li cas lub ntsiab lus tseem ceeb tseem ceeb?
Txoj Cai Tseem Ceeb yog tus menyuam qhov txiaj ntsig zoo tshaj plaws thiab kev noj qab haus huv yog thawj zaug thiab tseem ceeb tshaj qhov kev txiav txim siabTxoj Cai Saib Xyuas Menyuam Yaus qhia txog tej yam uas Tus Kws Txiav Txim yuav tsum tau txiav txim siab thaum txiav txim ib puag ncig saib xyuas thiab tiv thaiv menyuam:
Ntawm qhov tseem ceeb lossis qhov tseem ceeb?
Ob leeg tuaj yeem ua haujlwm raws li kuv pom qhov chaw ntseeg tau hais txog thiab nrog lub npe qhov tseem ceeb. Thov coj nws ua qhov tseem ceeb - txoj haujlwm nws tus kheej yog qhov tseem ceeb thiab kuv tsis txaus siab yam haujlwm uas koj tuaj yeem ua tom qab kuv cov lus qhia (qhov no) .