Video: Puas yog lub sijhawm qeeb thaum koj mus txog qhov nrawm ntawm lub teeb?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Einstein txoj kev xav ntawm kev sib txheeb tshwj xeeb hais tias lub sij hawm qeeb los yog ceev nce nyob ntawm seb ceev npaum li cas koj txav txheeb ze rau lwm yam. Mus txog qhov ceev ntawm lub teeb , ib tug neeg nyob rau hauv lub spaceship yuav muaj hnub nyoog ntau qeeb dua tshaj nws tus ntxaib nyob hauv tsev. Tsis tas li ntawd, raws li Einstein txoj kev xav ntawm kev sib raug zoo, lub ntiajteb txawj nqus tuaj yeem khoov sij hawm.
Kuj tseem paub yog, vim li cas lub sijhawm qeeb thaum koj mus txog qhov nrawm ntawm lub teeb?
Qhov ceev tus txheeb ze tshaj tawm, qhov ntau dua sij hawm dilation ntawm ib leeg, nrog tus nqi ntawm sij hawm ncav zero ua ib tug mus cuag qhov ceev ntawm lub teeb (299, 792, 458 m/s). Qhov no ua rau massless hais uas mus ntawm lub ceev ntawm lub teeb kom tsis txhob cuam tshuam los ntawm kev hla ntawm sij hawm.
lub sij hawm nres ntawm qhov ceev ntawm lub teeb? Ib yam li nws sij hawm qeeb qeeb thaum ib yam khoom txav ntawm qhov siab ceev , tib yam khoom kuj yuav tau luv luv nyob rau hauv nws txoj kev taw qhia. Nyob ntawm ceev ntawm lub teeb , sij hawm nres thiab cov khoom yuav shrink rau xoom ntev.
Xav txog qhov no, pes tsawg lub sijhawm qeeb ntawm lub teeb nrawm?
Txawm nyob rau ntawm "qis ceev "ntawm 10% ntawm cov ceev ntawm lub teeb (300, 000 km ib ob, lossis 186, 300 mais ib ob) peb lub moos yuav qeeb down los ntawm tsuas yog ib ncig ntawm 1%, tab sis yog tias peb mus ntawm 95% ntawm cov ceev ntawm lub teeb lub sij hawm yuav qeeb nqes mus txog ib feem peb ntawm qhov ntsuas los ntawm tus neeg soj ntsuam nyob ruaj khov.
Yuav ua li cas thaum koj mus txog qhov ceev ntawm lub teeb?
Raws li qhov khoom mus txog qhov ceev ntawm lub teeb , nws loj nce precipitously. Yog hais tias ib yam khoom sim mus ncig 186, 000 mais ib ob, nws cov huab hwm coj ua tsis kawg, thiab lub zog yuav tsum tau txav mus los. Vim li no, tsis muaj ib yam khoom uas tuaj yeem taug kev sai lossis nrawm dua li qhov ceev ntawm lub teeb.
Pom zoo:
Dab tsi yog qhov zoo sib xws thiab qhov sib txawv ntawm qhov nrawm thiab nrawm?
Kev sib piv daim duab piv rau Kev Sib Piv Ceev Ceev Tus Nqi Hloov ntawm qhov kev ncua deb Hloov pauv hloov thaum lub cev rov qab mus rau nws qhov chaw pib Yuav tsis xoom Yuav yog xoom Tsiv khoom Ceev ntawm cov khoom txav tsis tuaj yeem tsis zoo. Kev nrawm ntawm cov khoom txav tuaj yeem yog qhov zoo, tsis zoo lossis xoom
Dab tsi yog qhov txawv ntawm qhov nrawm thiab nrawm nrog piv txwv?
Qhov laj thawj yog yooj yim. Kev nrawm yog lub sij hawm tus nqi ntawm qhov khoom txav mus raws txoj kev, thaum lub nrawm yog tus nqi thiab kev taw qhia ntawm qhov khoom txav. Piv txwv li, 50 km / h (31 mph) piav qhia txog qhov ceev ntawm lub tsheb uas taug kev raws txoj kev, thaum 50 km / teev sab hnub poob piav qhia txog qhov nrawm uas nws tab tom taug kev
Puas muaj teeb meem los ntawm qhov kev taw qhia qhov chaw sib npaug mus txog?
Qhov no ib txwm tshwm sim thaum cov tshuaj tiv thaiv nce mus txog qhov sib npaug. Tsis yog, nws tsis muaj teeb meem los ntawm qhov kev taw qhia qhov chaw sib npaug mus txog. Ob qhov kev sim yuav muab tib txoj haujlwm sib npaug vim tias ob qho kev sim pib nrog stoichiometric cov nyiaj reactants lossis cov khoom lag luam
Lub luag haujlwm ntawm lub cell membrane yog dab tsi thaum lub sijhawm thauj mus los?
Lub cell membrane yog xaiv permeable rau ions thiab organic molecules thiab tswj kev txav ntawm cov khoom hauv thiab tawm ntawm lub hlwb. Lub luag haujlwm tseem ceeb ntawm cov cell membrane yog los tiv thaiv lub cell ntawm nws ib puag ncig. Nws muaj phospholipid bilayer nrog embedded proteins
Koj qhia li cas yog tias daim duab nrawm nrawm lossis qeeb?
Pib: Saib hauv lub sijhawm [0,1]. Txoj hauj lwm (tshem tawm) yog nce, yog li qhov kev tshaj tawm yog qhov zoo. Tab sis daim duab yog concave down, acceleration yog tsis zoo, yam yog qeeb, kom txog thaum nws ncav cuag tshaj tawm (thiab ceev) 0 thaum lub sij hawm 1