de Ronsard, French poet – Rosa 'Eden'. Wilhelm Röntgen, German inventor – röntgen, unit of dosage of X-rays or gamma radiation. Andrés Quintana Roo, Mexican politician – Quintana Roo. Alice Roosevelt, American presidential daughter – Alice blue. Theodore Roosevelt, American president – Teddy bear. Hermann Rorschach, Swiss psychiatrist and psychoanalyst – Rorschach test. Gioacchino Rossini, Italian composer – Tournedos Rossini. Eugène Rousseau, French chess player – Rousseau Gambit. Henry Isaac Rowntree, British businessman – Rowntree's. Henry Royce and Charles Rolls, British businesspeople – Rolls–Royce. Ruaidhrí mac Raghnaill, Hebridean magnate, Clann Ruaidhrí. Peter Paul Rubens, Flemish painter – Rubenesque (term used to describe chubby, obese women). Ernő Rubik, Hungarian inventor – Rubik's Cube, Rubik's Clock, Rubik's Magic, Rubik's Revenge. Heinrich Daniel Ruhmkorff, German inventor – Ruhmkorff commutator, Ruhmkorff coil. Rumpelstiltskin, German fairy tale character – Rumpelstiltskin principle. Johan Ludwig Runeberg, Finnish poet – Runeberg torte. Carle David Tolmé Runge, German mathematician and physicist – Runge's phenomenon. Damon Runyon, American journalist and writer – Runyonesque, Damon Runyon Stakes, Damon Runyon character Bertrand Russell, British philosopher – Russell's paradox, Russell's teapot. Jim Russell, Australian cartoonist – Jim Russell Award. Reverend John Russell, British reverend and businessman – Jack Russell Terrier. Henry Norris Russell, American astronomer, and Ejnar Hertzsprung, Danish astronomer – Hertzsprung–Russell diagram Lord Rutherford, New Zealand physicist – rutherfordium. Johannes Rydberg, Swedish physicist – Rydberg constant, Rydberg formula, Rydberg unit, Rydberg atoms. Herbert John Ryser, American mathematician – Ryser's formula. S Sabellius, Christian theologist – Sabellianism Franz Sacher, Austrian confectioner – Sachertorte Leopold von Sacher-Masoch, German novelist – masochism Marquis de Sade, French novelist – sadism Sheikh Safi-ad-din Ardabili, Persian sheikh – Safavid dynasty, Safavids Charles Frederick Morris Saint, British surgeon – Saint's triad, a medical counterexample to Ockham's razor Claude Henri de Saint-Simon, French philosopher – Saint-Simonianism. Ulrich Salchow, Swedish figure skater – Salchow, figure skating jump Daniel Elmer Salmon, American pathologist – salmonella. Raimondo di Sangro, Prince of Sanseviero, Italian nobleman and alchemist – sanseveria. Shalmaneser V, Biblical king – 9-litre wine bottle (see Wine bottle#Sizes) Vasili Samarsky-Bykhovets, a Russian mine official – samarskite, the mineral after which the chemical element samarium has been named. Augusto Sandino, Nicaraguan president – Sandinism. John Montagu, 4th Earl of Sandwich, British earl – sandwiches and South Sandwich Islands. Thomas Sankara, Burkinabé president – Sankarism. Matthew Henry Phineas Riall Sankey, Irish civil engineer – Sankey diagram. Rick Santorum, American politician – spreading santorum Edward