▁to ▁find ▁an ▁absolute ▁state ▁of ▁motion , ▁i . e . ▁the ▁valid ity ▁of ▁the ▁relativ ity ▁principle ▁as ▁the ▁consequence ▁of ▁the ▁negative ▁results ▁of ▁all ▁a ether ▁dr ift ▁experiments ▁and ▁effects ▁like ▁the ▁moving ▁magnet ▁and ▁conduct or ▁problem ▁which ▁only ▁depend ▁on ▁relative ▁motion ; ▁c ) ▁The ▁F ize au ▁experiment ; ▁d ) ▁The ▁aber r ation ▁of ▁light ; ▁ ▁with ▁the ▁following ▁consequences ▁for ▁the ▁speed ▁of ▁light ▁and ▁the ▁theories ▁known ▁at ▁that ▁time : ▁ ▁The ▁speed ▁of ▁light ▁is ▁not ▁composed ▁of ▁the ▁speed ▁of ▁light ▁in ▁vac u um ▁and ▁the ▁velocity ▁of ▁a ▁preferred ▁frame ▁of ▁reference , ▁by ▁b . ▁This ▁contradict s ▁the ▁theory ▁of ▁the ▁( near ly ) ▁station ary ▁a ether . ▁The ▁speed ▁of ▁light ▁is ▁not ▁composed ▁of ▁the ▁speed ▁of ▁light ▁in ▁vac u um ▁and ▁the ▁velocity ▁of ▁the ▁light ▁source , ▁by ▁a ▁and ▁c . ▁This ▁contradict s ▁the ▁emission ▁theory . ▁The ▁speed ▁of ▁light ▁is ▁not ▁composed ▁of ▁the ▁speed ▁of ▁light ▁in ▁vac u um ▁and ▁the ▁velocity ▁of ▁an ▁a ether ▁that ▁would ▁be ▁drag ged ▁within ▁or ▁in ▁the ▁vic inity ▁of ▁matter , ▁by ▁a , ▁c , ▁and ▁d . ▁This ▁contradict s ▁the ▁hypothesis ▁of ▁the ▁complete ▁a ether ▁drag . ▁The ▁speed ▁of ▁light ▁in ▁moving ▁media ▁is ▁not ▁composed ▁of ▁the ▁speed ▁of ▁light ▁when ▁the ▁medium ▁is ▁at ▁rest ▁and ▁the ▁velocity ▁of ▁the ▁medium ,