Video: Micro arc thib ob yog dab tsi?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
microarcsecond (plural microarcseconds) Ib chav tsev ntawm lub kaum sab xis; ib lab (10-6) ib arcsecond.
Ib yam li ntawd, koj tuaj yeem nug, qhov kev ncua deb yog qhov arc thib ob?
Ntawm hiav txwv theem ib feeb ntawm arc raws txoj kab nruab nrab lossis ib qho meridian (qhov tseeb, ib lub voj voog loj) sib npaug ib mais ntawm thaj chaw raws lub ntiaj teb txoj kab nruab nrab lossis kwv yees li ib mais nautical (1,852 metres; 1.151 mais). A thib ob ntawm arc , ib tug rau caum ntawm cov nyiaj no, yog kwv yees li 30 meters (98 ko taw).
Tom qab, lo lus nug yog, pes tsawg vib nas this ntawm arc nyob rau hauv 360 degrees? Lub voj voog puv muaj 360 degrees . Ib degree tuaj yeem muab faib ua 60 feeb ntawm arc . Cov feeb ntawm arc yuav tsum tsis txhob totaub nrog feeb ntawm lub sijhawm. Txhua feeb ntawm arc muaj 60 vib nas this arc , yog a ob arc yog lub kaum sab xis uas yog 1/3, 600 ntawm a degree.
Ntawm no, ΜAS yog dab tsi?
Ib microarc-thib ob ( µas ) yog SI-ntau yam (saib prefix micro) ntawm lub kaum sab xis chav tsev arc-thib ob thiab sib npaug rau 0.000001 arc-thib ob.
Nws siv sijhawm ntev npaum li cas hnub qub kom txav 1 arc feeb?
Xyuas koj cov lus teb: Tsis yog, nco ntsoov qhov ntawd cov hnub qub txav 15 ° hauv 60 feeb . Cov tus nqi ntawm angular motion yog cov tib yam hauv lwm qhov chaw ntawm tus ntuj, txawm koj ua tau 'tsis yog ntsuas tus ces kaum nrog koj txhais tes vim koj tsis nyob tus nruab nrab ntawm tus lub voj voog.
Pom zoo:
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