-
577.
Occultations
Subjects
AstronomySpherical astronomy
-
578.
One-dimensional conductors
Subjects
Electric conductorsSaltsEnergy-band theory of solids
-
579.
Open systems (Physics)
Subjects
Statistical physicsStatistical mechanicsIrreversible processes
-
580.
Optical coherence tomography
Subjects
Tomography
-
581.
Optical communications
Subjects
PhotonicsTelecommunication
-
582.
Optical films
Subjects
Optical materialsThin films
-
583.
Optical illusions
Subjects
Hallucinations and illusionsPhysiological opticsVisual perception
-
584.
Optical images
Subjects
Physiological opticsGeometrical optics
-
585.
Optical instruments
Subjects
Physical instruments
-
586.
Optical measurements
Subjects
-
587.
Optical mineralogy
Subjects
MineralogyDeterminative mineralogy
-
588.
Optical properties
Subjects
Optics
-
589.
Optical rotation
Subjects
Molecular rotation
-
590.
Opticians
Subjects
-
591.
Optics
Subjects
PhysicsLight
-
592.
Optoelectronics
Subjects
ElectronicsPhotonics
-
593.
Orbits
Subjects
Rotational motion
-
594.
Order-disorder models
Subjects
Matter
-
595.
Organic conductors
Subjects
Organometallic compoundsOne-dimensional conductors
-
596.
Organic semiconductors
Subjects
Semiconductors
-
597.
Origin of planets
Subjects
Cosmology
-
598.
Origin of solar system
Subjects
Cosmology
-
599.
Oscilloscopes
Subjects
Electronic apparatus and appliances
-
600.
Outer space
Subjects
AstronauticsAstronomy
Last updated dated: 21/02/2026