Branches of Physics

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Definition of Physics, Major Branches, Classical Physics, Modern Physics

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Branches of Physics

  1. 1. INTRODUCTIONLECTURE 1
  2. 2. PHYSICS- Is the study of everyday phenomena. It aimsto explain these phenomena in terms of thefundamental laws of nature.- Is the study of matter and energy and theirrelationship.
  3. 3. Physics and its BranchesPHYSICSClassicalPhysicsModernPhysics
  4. 4. Physics and its Branches• CLASSICAL PHYSICS – refers to the traditionalforces that were recognized and developedbefore the beginning of the 20th century• MODERN PHYSICS –refers to the concepts inphysics that have surfaced since the beginningof the 20th century.
  5. 5. CLASSICAL PHYSICS1. MECHANICS – the study of forces acting onbodies whether at rest or in motionpicture from: Giancoli, 2005
  6. 6. CLASSICAL PHYSICS2. ACOUSTICS – The studyof the production andpropagation of soundwaves.
  7. 7. CLASSICAL PHYSICS3. OPTICS – the study of lighta. PHYSICAL OPTICS – on the production, natureand properties of lightb. PHYSIOLOGICAL OPTICS – on the part played bylight in visionc. GEOMETRICAL OPTICS –on the reflection andrefraction of light as encountered in the study ofmirrors and lenses
  8. 8. CLASSICAL PHYSICS4. THERMODYNAMICS – the study of therelationship between heat and other forms ofenergy5. ELECTROMAGNETISM – the study of theproperties of electric current and magnetismand their relationshipa. ELECTROSTATICS – on electric charges at restb. ELECTRODYNAMICS – on moving chargesc. MAGNETOSTATICS – on magnetic poles at rest
  9. 9. MODERN PHYSICS1. ATOMIC and NUCLEAR PHYSICS – the studyof the components, structure and behavior ofthe nucleus of the atom.2. QUANTUM PHYSICS – the study of thediscrete nature of phenomena at the atomicand subatomic levels its focus is on theinvisible units of energy called quanta asdescribed by the quantum theory.
  10. 10. MODERN PHYSICS3. RELATIVISTIC PHYSICS - the study ofphenomena that take place in a forms ofreference that is in motion with respect to anobserver.4. SOLID STATE PHYSICS – study of allproperties of solid materials includingelectrical conduction in crystals of semi-conductor and metals
  11. 11. MODERN PHYSICS5. CONDENSED MATTER PHYSICS –study of theproperties of condensed materials (solids,and liquid and those intermediate betweenthem and dense gas) with the ultimate goaland developing new material with betterproperties; it is an extension of solid statephysics6. PLASMA PHYSICS –the study of the fourthstate of matter; plasma
  12. 12. MODERN PHYSICS7. LOW TEMPERATURE PHYSICS – the study ofthe production and maintenance oftemperatures down to almost absolute zeroand the various phenomena that occur onlyat such temperature.

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