Alfred Robb




Alfred Arthur Robb FRS[1] (18 January 1873 in Belfast – 14 December 1936 in Castlereagh) was a Northern Irish physicist.[2]



Biography


Robb studied at Queen's College in Belfast (BA 1894) and at St John's College in Cambridge (Tripos 1897, MA 1901)].[3] He then proceeded to University of Göttingen, where, guided by Woldemar Voigt, he wrote his dissertation on the Zeeman effect. He also worked under J. J. Thomson at the Cavendish Laboratory. The Croix de Guerre was awarded to him for WWI service in the Red Cross, and in 1921 he became a fellow of the Royal Society.[1][4]


He is known for his four books on special relativity (1911, 1914, 1921, 1936) where he gave a spacetime derivation of the theory in an axiomatic-geometric way.[5] Robb therefore was sometimes called the "Euclid of relativity". In the first of these works he used a hyperbolic angle ω to introduce the concept of rapidity[6]:9 and showed that the kinematic space of velocities is hyperbolic, so that "instead of a Euclidean triangle of velocities, we get a Lobachevski triangle of rapidities".[6]:29
However, contrary to the scientific mainstream, he believed that the works of Joseph Larmor and Hendrik Lorentz were more important for relativity than the works of Albert Einstein and Hermann Minkowski.[7]



Books



  • Robb, Alfred (1911). Optical geometry of motion, a new view of the theory of relativity. Cambridge: Heffer & Sons..mw-parser-output cite.citationfont-style:inherit.mw-parser-output qquotes:"""""""'""'".mw-parser-output code.cs1-codecolor:inherit;background:inherit;border:inherit;padding:inherit.mw-parser-output .cs1-lock-free abackground:url("//upload.wikimedia.org/wikipedia/commons/thumb/6/65/Lock-green.svg/9px-Lock-green.svg.png")no-repeat;background-position:right .1em center.mw-parser-output .cs1-lock-limited a,.mw-parser-output .cs1-lock-registration abackground:url("//upload.wikimedia.org/wikipedia/commons/thumb/d/d6/Lock-gray-alt-2.svg/9px-Lock-gray-alt-2.svg.png")no-repeat;background-position:right .1em center.mw-parser-output .cs1-lock-subscription abackground:url("//upload.wikimedia.org/wikipedia/commons/thumb/a/aa/Lock-red-alt-2.svg/9px-Lock-red-alt-2.svg.png")no-repeat;background-position:right .1em center.mw-parser-output .cs1-subscription,.mw-parser-output .cs1-registrationcolor:#555.mw-parser-output .cs1-subscription span,.mw-parser-output .cs1-registration spanborder-bottom:1px dotted;cursor:help.mw-parser-output .cs1-hidden-errordisplay:none;font-size:100%.mw-parser-output .cs1-visible-errorfont-size:100%.mw-parser-output .cs1-subscription,.mw-parser-output .cs1-registration,.mw-parser-output .cs1-formatfont-size:95%.mw-parser-output .cs1-kern-left,.mw-parser-output .cs1-kern-wl-leftpadding-left:0.2em.mw-parser-output .cs1-kern-right,.mw-parser-output .cs1-kern-wl-rightpadding-right:0.2em


  • Robb, Alfred (1914). A theory of time and space. Cambridge: University Press.


  • Robb, Alfred (1921). The absolute relations of time and space. Cambridge: University Press.


  • Robb, Alfred (1936). Geometry Of Time And Space. Cambridge: University Press.


References




  1. ^ ab Larmor, J. (1938). "Alfred Arthur Robb. 1873-1936". Obituary Notices of Fellows of the Royal Society. 2 (6): 315–326. doi:10.1098/rsbm.1938.0013.


  2. ^ Alfred Robb at the Mathematics Genealogy Project.


  3. ^ "Robb, Alfred Arthur (RB894AA)". A Cambridge Alumni Database. University of Cambridge.


  4. ^ Sanchez-Ron, José M. (1987). "The reception of special relativity in Great Britain". In T. F. Glick. The Comparative Reception of Relativity. Berlin: Springer. pp. 27–58. ISBN 90-277-2498-9.


  5. ^ A. J. Briginshaw (1979) "The axiomatic geometry of Space-Time: An assessment of the work of A. A. Robb", Centaurus 22: 315-323 doi:10.1111/j.1600-0498.1979.tb00595.x


  6. ^ ab Robb (1911) Optical Geometry of Motion


  7. ^ Sanchez-Ron, pp. 46-49











-

這個網誌中的熱門文章

How to read a connectionString WITH PROVIDER in .NET Core?

圖片
6 I added .AddJsonFile("Connections.json", optional: true, reloadOnChange: true) in public Startup(IHostingEnvironment env) Connections.json contains: "ConnectionStrings": "DefaultConnection": "Server=(localdb)\mssqllocaldb;Database=DATABASE;Trusted_Connection=True;MultipleActiveResultSets=true", "COR-W81-101": "Data Source=DATASOURCE;Initial Catalog=P61_CAFM_Basic;User Id=USERID;Password=PASSWORD;Persist Security Info=False;MultipleActiveResultSets=False;Packet Size=4096;", "COR-W81-100": "Data Source=DATASOURCE;Initial Catalog=Post_PS;User Id=USERID;Password=PASSWORD;Persist Security Info=False;MultipleActiveResultSets=False;Packet Size=4096;", "MSEDGEWIN10": "Data Source=DATASOURCE; Initial Catalog=COR_Basic; Persist Security Info=False;Integrated Security=true;MultipleActiveResultSets=False;Packet Size=4096;Application Name="COR_Basic"", "server&qu
閱讀完整內容

In R, how to develop a multiplot heatmap.2 figure showing key labels successfully

圖片
1 2 I'm trying to develop a multiplot heatmap.2 saved to a pdf. I'm having some success but the axis labels are getting chopped off. Subplot titles are also desirable but again the labels are getting chopped. Here's my reproducible code: library(gridExtra) library(grid) library(gridGraphics) library(gplots) Col = colorRampPalette(c("red","orange","yellow", "white")) grab_grob <- function() grid.echo() grid.grab() par(cex.main=0.1, mar = c(1,1,1,1) ) #data<-read.table("heatmap.input.matrix.data.txt") lmat = rbind(c(2,3),c(4,1),c(4,1)) lwid = c(2.5,4) lhei = c(0.5,4,3) labRowvec <- c(rep(NULL, dim(matrix(runif(1000, 1,10),ncol=50))[1])) labColvec <- c(rep(NULL, dim(matrix(runif(1000, 1,10),ncol=50))[2])) gl <- lapply(1:12, function(i) heatmap.2(matrix(runif(1000, 1,10),ncol=50), dendrogram = "none",offsetRow=-0.5, offsetCol=-1,srtCol=0, density="density", lmat =lmat,lhei = l
閱讀完整內容

Museum of Modern and Contemporary Art of Trento and Rovereto

圖片
Art museum in Rovereto TN, Italy Museum of Modern and Contemporary Art of Trento and Rovereto Museo d'arte moderna e contemporanea di Trento e Rovereto MART, Entrance Location Corso Angelo Bettini, 43, 38068 Rovereto TN, Italy Coordinates 45°53′38″N 11°02′42″E  /  45.8940°N 11.0450°E  / 45.8940; 11.0450 Coordinates: 45°53′38″N 11°02′42″E  /  45.8940°N 11.0450°E  / 45.8940; 11.0450 Type Art museum Director Gianfranco Maraniello Public transit access Trento train station. Taxis outside station. Website mart.trento.it The Museum of Modern and Contemporary Art of Trento and Rovereto (MART) ( Museo d'Arte Moderna e Contemporanea di Trento e Rovereto , in Italian) is a museum centre in the Italian province of Trento. The main site is in Rovereto, and contains mostly modern and contemporary artworks, including works from renowned Giorgio Morandi, Giorgio de Chirico, Felice Casorati, Carlo Carrà and Fortunato Depero. Fortunato Depero's house in Rovereto (known as Casa d
閱讀完整內容