 Types:
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astronomy, uranology
the branch of physics that studies celestial bodies and the universe as a whole

aeronautics, astronautics
the theory and practice of navigation through air or space

biophysics
physics as applied to biological problems

cryogenics, cryogeny
the branch of physics that studies the phenomena that occur at very low temperatures

crystallography
the branch of science that studies the formation and structure of crystals

electromagnetics, electromagnetism
the branch of physics concerned with electromagnetic phenomena

electronics
the branch of physics that deals with the emission and effects of electrons and with the use of electronic devices

electrostatics
the branch of physics that deals with static electricity

mechanics
the branch of physics concerned with the motion of bodies in a frame of reference

atomic physics, nuclear physics, nucleonics
the branch of physics that studies the internal structure of atomic nuclei

optics
the branch of physics that studies the physical properties of light

high energy physics, highenergy physics, particle physics
the branch of physics that studies subatomic particles and their interactions

plasma physics
the branch of physics concerned with matter in its plasma phase

quantum physics
the branch of physics based on quantum theory

rheology
the branch of physics that studies the deformation and flow of matter

solidstate physics
the branch of physics that studies the properties of materials in the solid state: electrical conduction in crystals of semiconductors and metals; superconductivity; photoconductivity

statistical mechanics
the branch of physics that makes theoretical predictions about the behavior of macroscopic systems on the basis of statistical laws governing its component particles

thermodynamics
the branch of physics concerned with the conversion of different forms of energy

astrodynamics
the branch of astronomy that studies the motion of natural and artificial bodies in space

astrometry
the branch of astronomy that deals with the measurement of the position and motion of celestial bodies

radio astronomy
the branch of astronomy that detects and studies the radio waves emitted by celestial bodies

avionics
science and technology of electronic systems and devices for aeronautics and astronautics

celestial mechanics
the branch of astronomy concerned with the application of Newton's laws of motion to the motions of heavenly bodies

astrophysics
the branch of astronomy concerned with the physical and chemical properties of celestial bodies

selenology
the branch of astronomy that deals with the moon

solar physics
the branch of astronomy that deals with the sun

catoptrics
branch of optics dealing with formation of images by mirrors

holography
the branch of optics that deals with the use of coherent light from a laser in order to make a hologram that can then be used to create a threedimensional image

Newtonian mechanics, classical mechanics
the branch of mechanics based on Newton's laws of motion

quantum mechanics
the branch of quantum physics that accounts for matter at the atomic level; an extension of statistical mechanics based on quantum theory (especially the Pauli exclusion principle)

quantum field theory
the branch of quantum physics that is concerned with the theory of fields; it was motivated by the question of how an atom radiates light as its electrons jump from excited states

fluid mechanics, hydraulics
study of the mechanics of fluids

pneumatics
the branch of mechanics that deals with the mechanical properties of gases

statics
the branch of mechanics concerned with forces in equilibrium

dynamics, kinetics
the branch of mechanics concerned with the forces that cause motions of bodies

kinematics
the branch of mechanics concerned with motion without reference to force or mass

aerodynamics, aeromechanics
the branch of mechanics that deals with the motion of gases (especially air) and their effects on bodies in the flow

thermodynamics of equilibrium, thermostatics
the aspect of thermodynamics concerned with thermal equilibrium

electron optics
the branch of electronics that deals with beams of electrons and their focusing and deflection by magnetic fields

microelectronics
the branch of electronics that deals with miniature components

thermionics
the branch of electronics dealing with thermionic phenomena (especially thermionic vacuum tubes)