POGSON
| 6 |
POCZOBUTT
| 9 |
PLUTARCH
| 8 |
PLUMMER
| 7 |
PLINIUS
| 7 |
PLAYFAIR
| 8 |
PLASKETT
| 8 |
PLANTE
| 6 |
RAMAN
| 5 |
RAIMOND
| 7 |
RACAH
| 5 |
QUETELET
| 8 |
3 | |
OKEN
| 4 |
ODAY
| 4 |
OPELT
| 5 |
ORLOV
| 5 |
OSAMA
| 5 |
OSMAN
| 5 |
OBERTH
| 6 |
OLBERS
| 6 |
OLCOTT
| 6 |
ORESME
| 6 |
OSIRIS
| 6 |
OENIPES
| 7 |
OERSTED
| 7 |
OLIVIER
| 7 |
ONIZUKA
| 7 |
OSTWALD
| 7 |
OBRUCHEV
| 8 |
OPPOLZER
| 8 |
ORONTIUS
| 8 |
OPPENHEIMER
| 11 |
OMARKHAYYMAN
| 12 |
RICCIKLI
| 8 |
RHEITA
| 6 |
RHAETICUS
| 9 |
RESPIGHI
| 8 |
RESNIK
| 6 |
REPSOLD
| 7 |
REINHOLD
| 8 |
REINER
| 6 |
REICHENBACH
| 11 |
REIMANUS
| 8 |
REGNAULT
| 8 |
REGIOMONTANUS
| 13 |
RECHT
| 5 |
REAUMUR
| 7 |
RAZUMOV
| 7 |
RAYLEIGH
| 8 |
RAYET
| 5 |
RAVI
| 4 |
RASPLETIN
| 9 |
RANKINE
| 7 |
RAMSDEN
| 7 |
RAMSAY
| 6 |
SACROBOSCO
| 10 |
SABINE
| 6 |
SABATIER
| 8 |
RYNIN
| 5 |
RYDBERG
| 7 |
RUTHERFORD
| 10 |
RUTH
| 4 |
RUSSEL
| 6 |
RUNGE
| 5 |
RUMFORD
| 7 |
ROZHDESTVENDSKIY
| 16 |
ROWLAND
| 7 |
ROTHMANN
| 8 |
ROST
| 4 |
ROSSELAND
| 9 |
ROSSE
| 5 |
ROSS
| 4 |
ROSENBERGER
| 11 |
ROSA
| 4 |
ROENTGEN
| 8 |
ROEMER
| 6 |
ROMEO
| 5 |
ROCHE
| 5 |
ROCCO
| 5 |
ROCCA
| 5 |
ROBINSON
| 8 |
ROBERTSON
| 9 |
ROBERTS
| 7 |
ROBERT
| 6 |
RITZ
| 4 |
RITTER
| 6 |
RITTENHUSE
| 10 |
RITCHEY
| 7 |
RIEMANN
| 7 |
RIEDEL
| 6 |
RICHARDSON
| 10 |
RICHARDS
| 8 |
RICCO
| 5 |
RICCIUS
| 7 |
SITA
| 4 |
TAMM
| 4 |
SCHLESINGER
| 11 |
SCHJELLERUP
| 11 |
SHEPPSHANKS
| 11 |