English Pyotr Lebedev Cited by user Cosmia Nebula on 16 Apr 2024 Pyotr Nikolaevich Lebedev (Пётр Никола́евич Ле́бедев; 24 February 1866 – 1 March 1912) was a Russian physicist.
English Icaroscope Cited by user Pmj on 23 Mar 2024 An icaroscope is a telescope-like nonlinear optical device that enables viewing of both very bright and dark objects in the same image simultaneously.
English Nichols radiometer Cited by user Cosmia Nebula on 22 Aug 2023 A Nichols radiometer was the apparatus used by Ernest Fox Nichols and Gordon Ferrie Hull in 1901 for the measurement of radiation pressure.