MICHELSON'S 1879 DETERMINATION OF THE SPEED OF LIGHT IN AIR (WITH THANKS TO CHURCHILL EISENHART FOR PROVIDING DATA) NUMBER OF OBSERVATIONS = 100 NUMBER OF VARIABLES = 5 ORDER OF VARIABLES ON A LINE IMAGE-- 1. RESPONSE = SPEED OF LIGHT (IN MILLIONS OF METERS PER SECOND) 2. AIR TEMPERARATURE IN DEGREES F 3. ELAPSED DAYS (DAY 1 = JUNE 5, 1879) 4. CODED MORNING/AFTERNOON (1 = AM, 2 = PM) 5. DATA SET (1 TO 24) SOURCE--DORSEY, ERNEST N. (1944). THE VELOCITY OF LIGHT. TRANSACTIONS OF THE AMERICAN PHILOSOPHICAL SOCIETY, VOLUME 34, PART 1, PAGES 1-110, TABLE 22. NOTE--SPEED OF LIGHT IN A VACUUM IS (AS OF 1963)-- = 299792.5 KILOMETERS/SEC = 299.7925 MILLIONS OF METERS PER SECOND TO READ THIS FILE INTO DATAPLOT (& ANALYZE)-- SKIP 25 READ MICHELSO.DAT Y TEMP DAY AMPM SET CHARACTERS BOX PLOT LINES BOX PLOT BOX PLOT Y SET SPEED OF LIGHT TEMP DAY AMPM SET ------------------------------------------ 299.85 76 1 2 1 299.74 72 3 2 2 299.90 72 3 2 2 300.07 72 3 2 2 299.93 72 3 2 2 299.85 72 3 2 2 299.95 83 5 2 3 299.98 83 5 2 3 299.98 83 5 2 3 299.88 83 5 2 3 300.00 83 5 2 3 299.98 90 6 2 4 299.93 90 6 2 4 299.65 71 8 1 5 299.76 71 8 1 5 299.81 71 8 1 5 300.00 72 9 1 6 300.00 72 9 1 6 299.96 72 9 1 6 299.96 79 9 2 7 299.96 79 9 2 7 299.94 79 9 2 7 299.96 79 9 2 7 299.94 79 9 2 7 299.88 79 9 2 7 299.80 79 9 2 7 299.85 64 10 1 8 299.88 64 10 1 8 299.90 65 10 1 8 299.84 66 10 1 8 299.83 67 10 1 8 299.79 84 10 2 9 299.81 85 10 2 9 299.88 84 10 2 9 299.88 84 10 2 9 299.83 84 10 2 9 299.80 62 13 1 10 299.79 63 13 1 10 299.76 64 13 1 10 299.80 77 13 2 11 299.88 77 13 2 11 299.88 77 13 2 11 299.88 77 13 2 11 299.86 77 13 2 11 299.72 58 14 1 12 299.72 58 14 1 12 299.62 59 14 1 12 299.86 75 14 2 13 299.97 75 14 2 13 299.95 75 14 2 13 299.88 60 16 1 14 299.91 61 16 1 14 299.85 62 16 1 14 299.87 63 16 1 14 299.84 78 16 2 15 299.84 79 16 2 15 299.85 80 16 2 15 299.84 79 16 2 15 299.84 79 16 2 15 299.84 79 16 2 15 299.89 61 17 1 16 299.81 62 17 1 16 299.81 63 17 1 16 299.82 64 17 1 16 299.80 65 17 1 16 299.77 80 17 2 17 299.76 81 17 2 17 299.74 82 17 2 17 299.75 82 17 2 17 299.76 81 17 2 17 299.91 89 19 2 18 299.92 89 19 2 18 299.89 90 19 2 18 299.86 90 19 2 18 299.88 90 19 2 18 299.72 72 20 1 19 299.84 73 20 1 19 299.85 74 20 1 19 299.85 75 20 1 19 299.78 76 20 1 19 299.89 86 22 2 20 299.84 86 22 2 20 299.78 73 23 1 21 299.81 74 23 1 21 299.76 75 23 1 21 299.81 75 23 1 21 299.79 76 23 1 21 299.81 76 23 1 21 299.82 85 26 2 22 299.85 86 26 2 22 299.87 86 26 2 22 299.87 86 26 2 22 299.81 83 27 2 23 299.74 84 27 2 23 299.81 86 27 2 23 299.94 86 27 2 23 299.95 86 28 2 24 299.80 86 28 2 24 299.81 86 28 2 24 299.87 85 28 2 24