Qhov kwv yees ceev ntawm lub teeb yog dab tsi?
Qhov kwv yees ceev ntawm lub teeb yog dab tsi?

Video: Qhov kwv yees ceev ntawm lub teeb yog dab tsi?

Video: Qhov kwv yees ceev ntawm lub teeb yog dab tsi?
Video: Tshuaj theem vim li cas thiaj tau nqi ?/ Siv kho mob dab tsi?/paris polyphylla use for? 2024, Kaum ib hlis
Anonim

299,792 km ib ob

Ib yam li ntawd, koj tuaj yeem nug, qhov ceev ntawm lub teeb 3x10 8 yog dab tsi?

Cov ceev ntawm lub teeb yog ntsuas kom muaj tus nqi tib yam ntawm c = 3 x108 m/s tsis hais leej twg ntsuas nws.

Ib yam li ntawd, dab tsi txwv qhov ceev ntawm lub teeb? Tsis muaj dab tsi tuaj yeem mus nrawm dua 300, 000 mais ib ob (186, 000 mais ib ob). Dab tsi ntxiv, tsuas yog teeb tuaj yeem taug kev ntawm no ceev . Nws yog tsis yooj yim sua kom ceev tej yam khoom siv mus txog rau ceev ntawm lub teeb vim nws yuav siv lub zog tsis kawg los ua li ntawd.

Kuj paub yog, qhov ceev ntawm lub teeb xam tau li cas?

Ib qho kev sim thaum ntxov los ntsuas qhov ceev ntawm lub teeb tau ua los ntawm Ole Rømer, ib tug Danish physicist, nyob rau hauv 1676. Siv lub telescope, Ole tau soj ntsuam cov lus tsa suab ntawm Jupiter thiab ib lub hli, Io. Yog hais tias Ole tau paub lub cheeb ntawm lub ntiaj teb lub orbit, nws yuav muaj xam a ceev 227,000,000 m/s.

Dab tsi yog qhov ceev ntawm qhov tsaus ntuj?

Hauv kev tshawb fawb xyoo 2013, cov kws tshawb fawb tau txiav txim siab qhov ntawd tsaus ntuj teeb meem yuav tsum muaj ib ceev ntawm 54 meters ib ob, los yog 177 ko taw - qeeb piv rau cov ceev ntawm lub teeb [qhov chaw: Armendariz-Picon thiab Neelakanta].

Pom zoo: