-
697.
Radio telescopes
Subjects
Telescopes
-
698.
Radio waves
Subjects
Electric wavesElectromagnetic waves
-
699.
Radioactive disintegration
Subjects
RadioactivityNuclear reactions
-
700.
Radioactive pollution
Subjects
Pollution
-
701.
Radioactive tracers
Subjects
RadioisotopesRadioactivity
-
702.
Radioactive waste disposa
Subjects
Refuse and refuse disposal
-
703.
Radioactivity
Subjects
RadiationNuclear reactions
-
704.
Radiobiology
Subjects
BiologyRadioactivity
-
705.
Radiocarbon dating
Subjects
Archaeological datingRadioactive dating
-
706.
Radiography
Subjects
Scientific photographyRadiology
-
707.
Radioisotope brachytherapy
Subjects
Radiotherapy
-
708.
Radioisotopes
Subjects
Nuclear engineeringIsotopesRadioactive substances
-
709.
Radioisotopes in biology
Subjects
Isotope geology
-
710.
Radioisotopes in geology
Subjects
Isotope geology
-
711.
Radioisotopes in hydrology
Subjects
Radioactive tracers
-
712.
Radioisotopes in pharmacology
Subjects
PharmacologyNuclear medicine
-
713.
Radiology
Subjects
Physics
-
714.
Radiosurgery
Subjects
NeurosurgeryRadiotherapy
-
715.
Radiotherapy
Subjects
Medical electronicsElectrotherapeuticsRadioactivityMedical radiologyPhysiological therapeutics
-
716.
Raman effect
Subjects
Quantum theory
-
717.
Reduced gravity environments
Subjects
Gravitation
-
718.
Reflection (Optics)
Subjects
LightOptics
-
719.
Refraction
Subjects
LightOpticsMeteorological optics
-
720.
Regge theory
Subjects
Angular momentum (Nuclear physics)Particle physics
Last updated dated: 21/02/2026