
(DATA "Michelson" :TITLE "Michelson" :ABOUT "Michelson's measurements of the velocity of light in air.  In 1879, A. A. Michelson made 100 determinations of the velocity of light in air using a modification of a method proposed by the French physicist Foucault.  The data are given here as reported by Stigler.  The numbers are in km/sec, and have had 299,000 subtracted from them.  The currently accepted \"true\" velocity of light in vacuum is 299,792.5 km/sec.  Stigler has applied corrections used by Michelson and reports that the \"true\" value appropriate for comparison to these measurements is 734.5.  Each trial may be a summary of several experimental observations. Stigler, Stephen M. (1977).  Do Robust Estimators Work
with Real Data? The Annals of Statistics 5:4, 1075." :VARIABLES (QUOTE ("Velocity" "Trial")) :TYPES (QUOTE ("Numeric" "Category")) :LABELS (QUOTE ("Obs0" "Obs1" "Obs2" "Obs3" "Obs4" "Obs5" "Obs6" "Obs7" "Obs8" "Obs9" "Obs10" "Obs11" "Obs12" "Obs13" "Obs14" "Obs15" "Obs16" "Obs17" "Obs18" "Obs19" "Obs20" "Obs21" "Obs22" "Obs23" "Obs24" "Obs25" "Obs26" "Obs27" "Obs28" "Obs29" "Obs30" "Obs31" "Obs32" "Obs33" "Obs34" "Obs35" "Obs36" "Obs37" "Obs38" "Obs39" "Obs40" "Obs41" "Obs42" "Obs43" "Obs44" "Obs45" "Obs46" "Obs47" "Obs48" "Obs49" "Obs50" "Obs51" "Obs52" "Obs53" "Obs54" "Obs55" "Obs56" "Obs57" "Obs58" "Obs59" "Obs60" "Obs61" "Obs62" "Obs63" "Obs64" "Obs65" "Obs66" "Obs67" "Obs68" "Obs69" "Obs70" "Obs71" "Obs72" "Obs73" "Obs74" "Obs75" "Obs76" "Obs77" "Obs78" "Obs79" "Obs80" "Obs81" "Obs82" "Obs83" "Obs84" "Obs85" "Obs86" "Obs87" "Obs88" "Obs89" "Obs90" "Obs91" "Obs92" "Obs93" "Obs94" "Obs95" "Obs96" "Obs97" "Obs98" "Obs99")) :DATA (QUOTE (850.0 "FIRST" 740.0 "FIRST" 900.0 "FIRST" 1070.0 "FIRST" 930.0 "FIRST" 850.0 "FIRST" 950.0 "FIRST" 980.0 "FIRST" 980.0 "FIRST" 880.0 "FIRST" 1000.0 "FIRST" 980.0 "FIRST" 930.0 "FIRST" 650.0 "FIRST" 760.0 "FIRST" 810.0 "FIRST" 1000.0 "FIRST" 1000.0 "FIRST" 960.0 "FIRST" 960.0 "FIRST" 960.0 "SECOND" 940.0 "SECOND" 960.0 "SECOND" 940.0 "SECOND" 880.0 "SECOND" 800.0 "SECOND" 850.0 "SECOND" 880.0 "SECOND" 900.0 "SECOND" 840.0 "SECOND" 830.0 "SECOND" 790.0 "SECOND" 810.0 "SECOND" 880.0 "SECOND" 880.0 "SECOND" 830.0 "SECOND" 800.0 "SECOND" 790.0 "SECOND" 760.0 "SECOND" 800.0 "SECOND" 880.0 "THIRD" 880.0 "THIRD" 880.0 "THIRD" 860.0 "THIRD" 720.0 "THIRD" 720.0 "THIRD" 620.0 "THIRD" 860.0 "THIRD" 970.0 "THIRD" 950.0 "THIRD" 880.0 "THIRD" 910.0 "THIRD" 850.0 "THIRD" 870.0 "THIRD" 840.0 "THIRD" 840.0 "THIRD" 850.0 "THIRD" 840.0 "THIRD" 840.0 "THIRD" 840.0 "THIRD" 890.0 "FOURTH" 810.0 "FOURTH" 810.0 "FOURTH" 820.0 "FOURTH" 800.0 "FOURTH" 770.0 "FOURTH" 760.0 "FOURTH" 740.0 "FOURTH" 750.0 "FOURTH" 760.0 "FOURTH" 910.0 "FOURTH" 920.0 "FOURTH" 890.0 "FOURTH" 860.0 "FOURTH" 880.0 "FOURTH" 720.0 "FOURTH" 840.0 "FOURTH" 850.0 "FOURTH" 850.0 "FOURTH" 780.0 "FOURTH" 890.0 "FIFTH" 840.0 "FIFTH" 780.0 "FIFTH" 810.0 "FIFTH" 760.0 "FIFTH" 810.0 "FIFTH" 790.0 "FIFTH" 810.0 "FIFTH" 820.0 "FIFTH" 850.0 "FIFTH" 870.0 "FIFTH" 870.0 "FIFTH" 810.0 "FIFTH" 740.0 "FIFTH" 810.0 "FIFTH" 940.0 "FIFTH" 950.0 "FIFTH" 800.0 "FIFTH" 810.0 "FIFTH" 870.0 "FIFTH")) :DATASHEET-ARGUMENTS (QUOTE ((245 355) (104 299) 2 8))) 