Theodore William Richards invented the nephelometer, adiabatic calorimeter

Theodore William Richards – inventor of nephelometer & adiabatic calorimeter

Article on Theodore William Richards

Biography & contributions


Theodore William Richards was born on January 31, 1868




1910, Davy Medal


1911, Faraday Medal


1912, Willard Gibbs Medal


1914, Nobel Prize in Chemistry


1916, Franklin Medal


1922, Lavoisier Medal


1922, Le Blanc Medal


1932, Theodore Richards Medal


He determined the atomic weights of


  • Cesium
  • Cobalt
  • Iron
  • Nickel
  • Uranium etc.


Richards invented the nephelometer


He demonstrated the insidious effect of occluded moisture in gases and solids


Richards also studied atomic and molecular volume


He also invented an adiabatic calorimeter


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