සාරාංශය

විස්තරයMichelsonmorley-boxplot.svg	Boxplot representing Michelson's data on the speed of light. It consists of five experiments, each made of 20 consecutive runs.
දිනය	28 දෙසැම්බර් 2006
මූලාශ්‍රය	ස්වයං නිර්මාණයකි
කර්තෘ	User:Schutz
SVG genesis InfoField	The SVG code is valid.   This chart was created with R.

This data is not from the Michelson-Morley experiment but from Michelson's measurement of the speed of light. See MICHELSON, A. A. (1882). Experimental determination of the velocity of light made at the United States Naval Academy, Annapolis. Astronomic Papers 1 pp. 109-145 U.S. Nautical Almanac Office, or S. M. Stigler (1977) Do robust estimators work with real data? Annals of Statistics 5, 1055–1098.

Original upload by User:Schutz

Boxplot representing Michelson's data on the speed of light. It consists of five experiments, each made of 20 consecutive runs. Note that the oblique line is incorrect, and probably due to a bug in the Mediawiki software/SVG converter. The graphic was created by User:Schutz for Wikipedia on 28 December 2006, using the R statistical project. The program that generated the graphic is given below; the data and the idea are from the R help page for the morley dataset (see help(morley)). The graph was exported in postscript format, converted to SVG using the pstoedit command, and the layout was slightly modified using Inkscape before upload.

 
  data(morley)
  morley$Expt <- factor(morley$Expt)
  morley$Run <- factor(morley$Run)
  attach(morley)

  postscript("Michelsonmorley-boxplot.ps", paper="special", height=6, width=6,
             horizontal=F)
  par(las=1)
  par(mar=c(5.1, 5.1, 2.1, 2.1))
  par(font=2)
  par(font.axis=2)
  boxplot(Speed ~ Expt, xlab = "Experiment No.", ylab="Speed of light (km/s minus 299,000)")
  abline(h=792.458, lty=3)
  dev.off()
  

New upload by User:Mwtoews

Boxplot representing Michelson's data on the speed of light. It consists of five experiments, each made of 20 consecutive runs.

The graphic was originally created by User:Schutz for Wikipedia on 28 December 2006, using the R statistical project. The program that generated the graphic is given below; the data and the idea are from the R help page for the morley dataset (see help(morley)). The graph was exported in PDF format, converted to SVG using Adobe Illustrator, and the layout was slightly modified using Vim before upload.

data(morley)
morley$Expt <- factor(morley$Expt)

pdf("Michelsonmorley-boxplot.pdf", height=6, width=6)
par(las=1, mar=c(5.1, 5.1, 2.1, 2.1))
boxplot(Speed ~ Expt, morley, xlab = "Experiment No.",
        ylab="Speed of light (km/s minus 299,000)")
abline(h=792.458, col="red")
text(3,792.458,"true\nspeed")
dev.off()

බලපත්‍රීකරණය

මම, මෙම කාර්යයේ ප්‍රතිරූපණ අයිති හිමිකරු, මෙම කාර්යය public domain වෙත නිදහස් කරමි. මෙය ලෝක ව්‍යාප්තව අදාළ වේ. සමහර රටවල මෙය අනීතික විය හැකිය. එසේ වුවහොත්; මම කිසිදු කොන්දේසියකින් තොරව,ඕනෑම අයෙකුට ඕනෑම කාර්යයක් සඳහා මෙය, නීතිමය බාධාවක් නොමැති වනතුරු, භාවිතා කිරීමේ අයිතිය ලබාදෙමි.

The creator and uploader also believes that this graphic is a trivial work which does not qualify for copyright.

Reference

• A. J. Weekes (1986) A Genstat Primer. London: Edward Arnold.