Luna ...SItpntxta SSIttpnseclvl6tpnlcltrtpnqctpnstart1tpnindent720tp nhang Itpntxtb SItpntxta SSIttpnseclvl7tpnlcrmtpnqctpnstart1tpnindent720tpn hang Itpntxtb SItpntxta SSIttpnseclvl8tpnlcltrtpnqctpnstart1tpnindent720tp nhang Itpntxtb SItpntxta SSIttpnseclvl9tpnlcrmtpnqctpnstart1tpnindent720tpn hang Itpntxtb SItpntxta SStpardtplain tltrpartqc tli0tri0tidctlpartaspalphataspnumtfaautotadjustrig httrin0tlin0titap0tpararsid4789675 trtlchtfcs1 taf0tafs20talang1025 tltrchtfcs0 tfs20tlang1033tlangfe2052tcgridtlangnp1033tlangfen p2052 Itrtlchtfcs1 tabtaf0tafs36 tltrchtfcs0 tbtfs36tultinsrsid4789675tcharrsid4789675 Observarea luniiSItrtlchtfcs1 tabtaf0tafs36 tltrchtfcs0 tbtfs36tultinsrsid4789675 tpar Stpard tltrpartqc tli0tri0tidctlpartaspalphataspnumtfaautotadjustrig httrin0tlin0titap0tpararsid4789675 Itrtlchtfcs1 tabtaf0tafs36 tltrchtfcs0 tbtfs36tultinsrsid4789675tcharrsid4789675 tpar Stpardtplain tltrparts15tqj tli0tri0tidctlpartaspalphataspnumtfaautotadjustrig httrin0tlin0titap0 trtlchtfcs1 taf0tafs28talang1025 tltrchtfcs0 tfs28tlang1033tlangfe2052tcgridtlangnp1033tlangfen p2052 Itrtlchtfcs1 taf0 tltrchtfcs0 tlang1036tlangfe2052tlangnp1036tinsrsid4789675tcha rrsid4789675 Luna este satelitul natural al Pamantului, nu are lumina proprie, ea reflecta lumina pe care o primeste de al Soare.Nu are atmosfera, iar departarea medie fata de Pamant este de numai 384 mii km.tpar Stpardtplain tltrpartqj tli0tri0tidctlpartaspalphataspnumtfaautotadjustrig httrin0tlin0titap0 trtlchtfcs1 taf0tafs20talang1025 tltrchtfcs0 tfs20tlang1033tlangfe2052tcgridtlangnp1033tlangfen p2052 Itrtlchtfcs1 taf0 tltrchtfcs0 tfs28tlang1036tlangfe2052tlangnp1036tinsrsid478967 5tcharrsid4789675 Luna se deplaseaza pe orbita sa cu o viteza medie de 1024 kms, ceea ce inseamna ca, miscandu-se in jurul Pamantului, revine in dreptul aceleiasi stele dupa un interval de timp de 27 zile, 7 ore 43 minute si 11,47 secunde.Acest interval de timp se numeste SItrtlchtfcs1 taf0 tltrchtfcs0 titfs28tlang1036tlangfe2052tlangnp1036tinsrsid4789 675tcharrsid4789675 perioada siderala.tpar SItrtlchtfcs1 taf0 tltrchtfcs0 tfs28tlang1036tlangfe2052tlangnp1036tinsrsid478967 5tcharrsid4789675 Pe de alta parte, Luna se roteste in jurul axei sale intr-o perioada de timp egala cu perioada de miscare in jurul Pamantului, fapt pentru care ea arata mereu aceeasi fata spre Pamant.In figura 1 am reprezentat soarele S, Pamantul T si Luna L, in pozitia initiala fiind socotite punctele S,TSItrtlchtfcs1 taf0 tltrchtfcs0 tfs28tlang1036tlangfe2052tsubtlangnp1036tinsrsid47 89675tcharrsid4789675 1SItrtlchtfcs1 taf0 tltrchtfcs0 tfs28tlang1036tlangfe2052tlangnp1036tinsrsid478967 5tcharrsid4789675 si LSItrtlchtfcs1 taf0 tltrchtfcs0 tfs28tlang1036tlangfe2052tsubtlangnp1036tinsrsid47 89675tcharrsid4789675 1SItrtlchtfcs1 taf0 tltrchtfcs0 tfs28tlang1036tlangfe2052tlangnp1036tinsrsid478967 5tcharrsid4789675 .Dupa un interval de timp egal cu perioada siderala a Lunii, cele trei corpuri se vor gasi in punctele S,TSItrtlchtfcs1 taf0 tltrchtfcs0 tfs28tlang1036tlangfe2052tsubtlangnp1036tinsrsid47 89675tcharrsid4789675 2SItrtlchtfcs1 taf0 tltrchtfcs0 tfs28tlang1036tlangfe2052tlangnp1036tinsrsid478967 5tcharrsid4789675 si LSItrtlchtfcs1 taf0 tltrchtfcs0 tfs28tlang1036tlangfe2052tsubtlangnp1036tinsrsid47 89675tcharrsid4789675 2SItrtlchtfcs1 taf0 tltrchtfcs0 tfs28tlang1036tlangfe2052tlangnp1036tinsrsid478967 5tcharrsid4789675 .Pentru ca Luna sa ajunga iarasi in pozitie coliniara cu Soarele si Pamantul, in LSItrtlchtfcs1 taf0 tltrchtfcs0 tfs28tlang1036tlangfe2052tsubtlangnp1036tinsrsid47 89675tcharrsid4789675 3SItrtlchtfcs1 taf0 tltrchtfcs0 tfs28tlang1036tlangfe2052tlangnp1036tinsrsid478967 5tcharrsid4789675 , va trebui sa mai treaca un anumit interval de timp.In modul acesta se vede ca SItrtlchtfcs1 taf0 tltrchtfcs0 titfs28tlang1036tlangfe2052tlangnp1036tinsrsid4789 675tcharrsid4789675 perioada sinodica tendash SItrtlchtfcs1 taf0 tltrchtfcs0 tfs28tlang1036tlangfe2052tlangnp1036tinsrsid478967 5tcharrsid4789675 interval de timp dintre doua conjunctii este mai mare decat perioada siderala.Perioada sinodica se determina observational si este egala cu 29 zile, 12 ore, 44 minute si 2,8 secunde.tpar SItrtlchtfcs1 taf0 tltrchtfcs0 tfs28tlang1024tlangfe1024tnoprooftinsrsid4789675 ItshpgrpIttshpinsttshpleft1224tshptop457tshpright7 272tshpbottom5911tshpfhdr0tshpbxcolumntshpbxignoret shpbyparatshpbyignoretshpr3tshprk0tshpfbltxt0tshpz0 tshplid1067ItspItsn groupLeftSItsv 2448SSItspItsn groupTopSItsv 9072SSItspItsn groupRightSItsv 8496SSItspItsn groupBottomSItsv 14526SSItspItsn fFlipHSItsv 0SSItspItsn fFlipVSItsv 0SSItspItsn poshSItsv 0SSItspItsn posrelhSItsv 2SSItspItsn posvSItsv 0SSItspItsn posrelvSItsv 2SSItspItsn fLayoutInCellSItsv 0SSItspItsn fLayoutInCellSItsv 0SSItshpIttshpinsttshplid1028ItspItsn relLeftSItsv 3456SSItspItsn relTopSItsv 9072SSItspItsn relRightSItsv 4608SSItspItsn relBottomSItsv 10080SSItspItsn fRelFlipHSItsv 0SSItspItsn fRelFlipVSItsv 0SSItspItsn shapeTypeSItsv 3SSItspItsn fLayoutInCellSItsv 1SSSSItshpIttshpinsttshplid1029ItspItsn relLeftSItsv 3024SSItspItsn relTopSItsv 12096SSItspItsn relRightSItsv 5040SSItspItsn relBottomSItsv 14112SSItspItsn fRelFlipHSItsv 0SSItspItsn fRelFlipVSItsv 0SSItspItsn shapeTypeSItsv 3SSItspItsn fLayoutInCellSItsv 1SSSSItshpIttshpinsttshplid1030ItspItsn relLeftSItsv 6480SSItspItsn relTopSItsv 10656SSItspItsn relRightSItsv 8352SSItspItsn relBottomSItsv 12384SSItspItsn fRelFlipHSItsv 0SSItspItsn fRelFlipVSItsv 0SSItspItsn shapeTypeSItsv 3SSItspItsn fLayoutInCellSItsv 1SSSSItshpIttshpinsttshplid1031ItspItsn relLeftSItsv 4032SSItspItsn relTopSItsv 9504SSItspItsn relRightSItsv 4032SSItspItsn relBottomSItsv 13104SSItspItsn fRelFlipHSItsv 0SSItspItsn fRelFlipVSItsv 0SSItspItsn shapeTypeSItsv 20SSItspItsn shapePathSItsv 4SSItspItsn fFillOKSItsv 0SSItspItsn fFilledSItsv 0SSItspItsn fArroheadsOKSItsv 1SSItspItsn fLayoutInCellSItsv 1SSSSItshpIttshpinsttshplid1032ItspItsn relLeftSItsv 4032SSItspItsn relTopSItsv 9504SSItspItsn relRightSItsv 7344SSItspItsn relBottomSItsv 11520SSItspItsn fRelFlipHSItsv 0SSItspItsn fRelFlipVSItsv 0SSItspItsn shapeTypeSItsv 20SSItspItsn shapePathSItsv 4SSItspItsn fFillOKSItsv 0SSItspItsn fFilledSItsv 0SSItspItsn fArroheadsOKSItsv 1SSItspItsn fLayoutInCellSItsv 1SSSSItshpIttshpinsttshplid1033ItspItsn relLeftSItsv 3744SSItspItsn relTopSItsv 11808SSItspItsn relRightSItsv 4320SSItspItsn relBottomSItsv 12384SSItspItsn fRelFlipHSItsv 0SSItspItsn fRelFlipVSItsv 0SSItspItsn shapeTypeSItsv 3SSItspItsn fLayoutInCellSItsv 1SSSSItshpIttshpinsttshplid1036ItspItsn relLeftSItsv 4032SSItspItsn relTopSItsv 11808SSItspItsn relRightSItsv 4032SSItspItsn relBottomSItsv 12528SSItspItsn fRelFlipHSItsv 0SSItspItsn fRelFlipVSItsv 0SSItspItsn shapeTypeSItsv 20SSItspItsn shapePathSItsv 4SSItspItsn fFillOKSItsv 0SSItspItsn fFilledSItsv 0SSItspItsn fArroheadsOKSItsv 1SSItspItsn fLayoutInCellSItsv 1SSSSItshpIttshpinsttshplid1037ItspItsn relLeftSItsv 2448SSItspItsn relTopSItsv 13104SSItspItsn relRightSItsv 4032SSItspItsn relBottomSItsv 13248SSItspItsn fRelFlip... 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