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1、中国女航天员太空中讲课China'ssecondfemaleastronaut,WangYaping,hasdeliveredthecountry'sfirst-evervideolecturefromspace. 中国第二位女航天员王亚平首次在太空中进行视频讲课。 Speakingtostudentsvialivevideo,MsWangusedspinningtops,aball,waterandafellowastronauttoexplainphysicsinzero-gravity. ShewasspeakingfromtheTiangong-1spac
2、elaboratory,wheretheShenzhouspacecraftiscurrentlydocked, China'sfifthmannedspacemission,Shenzhou-10,isscheduledtoendaround25or26June. ThecrewisalsoexpectedtoattemptamanualdockinglateronThursday. ThiswillinvolvegettingbackinsidetheirShenzhoucapsule,unhookingfromTiangongandthenflyingaro
3、undthelabtore-attachthecapsuletothelaboratory. 'Sixteensunrises' MsYanguseddifferenceexperimentstodemonstratetheconceptsofweightandmassinspace. Aftershowinghownormalscalesdidnotworkinspace,sheusedaspecialscaletomeasurethemassofcrewcommanderNieHaisheng,usingNewton'ssecondlawofmotion-m
4、easuringthemassofanobjectthroughforceandacceleration. Atanotherpoint,toshowhowobjectsmoveinthemicrogravityenvironmentofspace,sheaskedhercolleaguetohelpherrotate90degrees,andthen180degrees,fromthefloorofthelaboratory. Spinningtopswereusedtocreategyroscopicmotioninspace,andaballattached
5、toastringtodemonstratependulummotion. Towardstheendoftheclass,MsYangmadeafilmofwaterusingametalring,explainedbytheincreasedsurfacetensionofwaterinspace.Shethenturnedthefilmofwaterintoawaterballbypouringmorewaterontoit,towideapplausefromstudentswatchinginChina. 2Around330primaryandseco
6、ndaryschoolstudentswatchedthelecturefromaspecialclassroominBeijing,wheretheycouldalsoaskMsWangquestionsthroughalivevideofeed,statemediasaid. Inresponsetoastudent'squestion,MsYangdescribedwhatshecouldseeinspace. "Thestarsweseearemuchbrighter,buttheydonottwinkle,"shesaid,explainingthis
7、wasduetothelackofEarth'sobstructingatmosphere. "Theskyweseeisn'tblue,butblack.Andeveryday,wecanseethesunrise16timesbecausewecircletheEarthevery90minutes" Anestimated60millionstudentsandteachersaroundChinawerealsoexpectedtowatchthelecturelive,theMinistryofEducationsaid.2
