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PES 105 Motions - PES 105 Motions PES 105 Fall 2001 General...

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1/15/12 PES 105 Motions 1/9 www.uccs.edu/atchriste/courses/PES105/105lectures/105lecmotions.html PES 105 Fall 2001 PUeYioXV LecWXUe General Astronom\ I Ne[W LecWXUe Lecture Notes: Motions We[W: ChapWeU 1 SecWion 1 and ChapWeU 5 p. 174-175 (2nd ediWion: Ch. 4 p. 148) Motions The moWion of Whe VWaUV iV Ueall\ moWion of Whe EaUWh. We obVeUYe WhUee baVic moWionV Zhen Ze obVeUYe Whe nighW Vk\: a YeU\ long WeUm dUifW of Whe noUWh celeVWial pole ...... fUom Zobble in EaUWh'V UoWaWion dail\ moWionV ......... fUom EaUWh UoWaWing (Vpinning) on iW'V a[iV \eaUl\ moWionV ........ fUom EaUWh UeYolYing (oUbiWing) aUoXnd Whe SXn We Zill e[amine each of WheVe moWionV in moUe deWail. Motions: precession (ThiV iV oXW of oUdeU - Waken fUom ChapWeU 5 p. 174-175 oU 2nd ed. Ch. 4 p. 148) EaUWh ZobbleV aV iW VpinV - mXch like a Wop doeV.
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1/15/12 PES 105 Motions 2/9 www.uccs.edu/atchriste/courses/PES105/105lectures/105lecmotions.html (The SUeceVViRQ (ZRbbOe) iV caXVed b\ Whe SXQ aQd MRRQ'V gUaYiWieV acWiQg RQ Whe bXOge Rf Whe EaUWh aQd b\ Whe cRQVeUYaWiRQ Rf aQgXOaU PRPeQWXP. We ZiOO WaON PRUe abRXW WheVe cRQceSWV OaWeU.) OQe UeVXOW Rf SUeceVViRQ iV WhaW Ze ZiOO haYe a diffeUeQW "NRUWh SWaU" iQ Whe fXWXUe. PUeceVViRQ iV SLOW (abRXW 26,000 \eaUV) WR gR aURXQd RQce. HeUe iV a OiQN WhaW deVcUibeV hRZ SUeceVViRQ aOVR chaQgeV Whe SRViWiRQ Rf Whe eTXiQR[eV aQd UeOaWeV WR aVWURORg\: hWWS://ZZZ.cU\VWaOiQNV.cRP/SUeceVViRQ.hWPO OiQN WR a Qice deVcUiSWiRQ Rf SUeceVViRQ: hWWS://ZZZ.fRXUPiOab.ch/\RXUVN\/heOS/SUeceVViRQ.hWPO ThiV OiQN VhRZV a gUaSh Rf Whe SUeceVViRQ RYeU WiPe: hWWS://ZZZ.PXVeXP.VWaWe.iO.XV/e[hibiWV/ice_ageV/SUeceVViRQ_gUaSh.hWPO
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1/15/12 PES 105 Motions 3/9 www.uccs.edu/atchriste/courses/PES105/105lectures/105lecmotions.html Motions: dail\ motion aUiVe fUom Whe UoWaWion (Vpin) of EaUWh caXVeV Whe UiVing and VeWWing each da\ of Whe SXn, Moon and VWaUV If noWhing elVe moYed ........ When moWionV aUe Vimple.
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