▁ ▁The ▁time ▁when ▁the ▁light ▁beam ▁strik es ▁object ▁ 2 ▁is ▁controlled ▁by ▁the ▁person ▁at ▁the ▁l ighth ouse , ▁not ▁anyone ▁on ▁object ▁ 1 , ▁so ▁no ▁one ▁on ▁object ▁ 1 ▁can ▁transmit ▁a ▁message ▁to ▁object ▁ 2 ▁by ▁this ▁method . ▁Therefore ▁the ▁theory ▁of ▁relativ ity ▁is ▁not ▁viol ated . ▁ ▁Par ado x ▁▁ ▁A ▁l ighth ouse ▁sends ▁a ▁powerful ▁beam ▁of ▁light ▁which ▁travel s ▁significant ▁distances ▁from ▁the ▁point ▁of ▁origin . ▁This ▁light ▁constantly ▁rot ates ▁in ▁a ▁circular ▁motion ▁around ▁the ▁l ighth ouse . ▁This ▁thought ▁experiment ▁propos es ▁that ▁light ▁moving ▁in ▁this ▁situation ▁is ▁actually ▁travel ing ▁faster ▁than ▁the ▁speed ▁of ▁light . ▁A ▁visual ▁dep iction ▁of ▁this ▁situation ▁can ▁be ▁viewed ▁in ▁Figure ▁ 1 . ▁This ▁presents ▁a ▁par ado x ▁because , ▁according ▁to ▁the ▁theory ▁of ▁relativ ity , ▁the ▁speed ▁of ▁light ▁in ▁a ▁vac u um ▁is ▁the ▁same ▁for ▁all ▁obser vers , ▁regardless ▁of ▁their ▁relative ▁motion ▁or ▁of ▁the ▁motion ▁of ▁the ▁light ▁source , ▁and ▁nothing ▁can ▁travel ▁faster ▁than ▁this ▁speed . ▁ ▁Similar ▁Moon ▁par ado x ▁ ▁A ▁similar ▁example ▁can ▁be ▁explained ▁by ▁the ▁movement ▁of ▁a ▁las er ▁across ▁the ▁face ▁of ▁the ▁Moon . ▁This ▁par ado x ▁ar ises ▁based ▁on ▁a ▁simple ▁principle : ▁if ▁someone ▁stands ▁a ▁distance ▁of ▁" X " ▁away ▁from ▁an ▁object , ▁and ▁sh ines ▁a ▁las er