Important scientists and inventors - topics of interest beginning with R

These are lists of the topics covered in the lists of scientists and inventors, with some cross-referencing.

 rabies vaccine

 Pasteur

 radar  Alvarez,  Watt, Oliphant

 radio astronomy

 Jansky

 radio telegraph

 Marconi, Braun

 radio telescope  Hewish, Ryle
 radio waves  Appleton

 radioactive half-life

 Rutherford

 radioactive tracers  de Hevesy
 radioactivity  Becquerel, Curie, Geiger

 radiocarbon dating

 Libby

 radioimmunoassay

 Yalow

 radiometer  Crookes

 radiometric dating

 Armstrong, Holmes

 radiotherapy

 Joly

 railways

 Stephenson

 Raman effect  Raman
 reaction mechanism  Fukui, Hinshelwood, Hoffmann, Semyonov
 reaction rate  Ostwald

 relativity

 Eddington, Einstein

 renal hypertension  Leloir
 renormalization group  Wilson
 restriction endonucleases  Arber, Nathans, Smith
 retinal pigments  Granit, Hartline, Wald
 retrosynthetic analysis  Corey
 retrovirus  Barré-Sinoussi, Bishop, Gallo, Montagnier, Varmus
 reverse transcriptase  Baltimore, Dulbecco, Temin
 rhodopsin  Granit, Hartline, Wald
 ribonuclease  Anfinsen, Moore, Stein
 ribosome  Ramakrishnan, Steitz, Yonath
 ribozymes  Altman, Cech
 Richardson's Law  Richardson

 Richter scale

 Richter

 rifle

 Whitworth

 RNA interference  Fire, Mello

 rocket

 von Braun, Goddard

 Rocket steam locomotive

 Stephenson

 roll film

 Eastman

 rotary combustion engine

 Wankel

 rubber tyre

 Dunlop