What is Physics?

“Science that studies the properties of matter and energy, considering only the attributes capable of measurement.”

Physics is an empirical science . Everything we know about the physical world and the principles that govern its behavior has been learned through observing the phenomena of nature.

The ultimate test of any physical theory is its agreement with observations and measurements of physical phenomena.

Physics, therefore, is essentially a science of measurement .

  • Units and measurements
    Physics unit and measurement systems, unit conversion tables, unit converter. Theoretical notes and exercises
  • Errors and measurements
    Errors in measurements, absolute, relative and percentage error, true value. Theoretical notes and exercises
  • Static
    Use of vectors. Simple machine, levers and gear, moment of a force. Inclined plane. Theoretical notes and exercises
  • Kinematics
    Uniform rectilinear motion, oblique, parabolic and vertical throw, free fall, encounter. Theoretical notes and exercises
  • Impulse and momentum Momentum
    , elastic and plastic shock, collisions. Theoretical notes and exercises
  • Dynamics
    Laws of Newton. Static and kinetic friction force. Coefficient of friction. Elastic force and constant deformation. Gravitational field concept. Inclined plane. Theoretical notes and exercises
  • Work, energy and power
    Mechanical energy. Kinetic and potential energy, friction. Conservative and non-conservative forces. Theoretical notes and exercises
  • Inertia
    Pendulum and flywheel. Theoretical notes and exercises
  • Static of fluids
    Hydrostatic. Density and specific weight. Communicating vessels. hydrostatic thrust. Archimedes’ principle. Theoretical notes and exercises
  • Fluid dynamics
    Bernoulli’s equation. viscous flows. laminar and turbulent motion. Surface tension. Theoretical notes and exercises
  • Thermostatic
    Thermometric scales. Thermometers. Zero principle of thermodynamics. Linear, superficial and volumetric dilatation. Theoretical notes and exercises
  • Thermodynamics
    Sensible heat and latent heat. Heat spread. Entropy. Otto, diesel and Carnot cycle. Calorimetry. Status change. Theoretical notes and exercises
  • Ideal and real gases
    Equation of state of ideal gases, laws of Guy-Lussac and Boyle Mariotte. Theoretical notes and exercises
  • Resistance of materials
    Plasticity and elasticity, elastic force. Theoretical notes and exercises
  • Magnetism
    Magnetic field, magnetic forces. Types of magnetic materials. Lorentz’s law. Theoretical notes and exercises
  • Electrostatic
    Electric field, electric charge. Faraday experiment. Capacitance. energy in a capacitor. Theoretical notes and exercises
  • Electrodynamics
    The intensity of electric current. Power and energy of a generator. DC circuits. The alternator. the dynamo Theoretical notes and exercises
  • Electrotechnics
    Direct current sources. Ideal sources of tension. System of meshes and nodes. Circuit resolution. Norton and Thevenin. Theoretical notes and exercises
  • Optics and electromagnetic waves
    Geometric and physical optics, mirrors and concave and convex lenses. Electromagnetic waves, electromagnetic spectrum. Refractive index. Theoretical notes and exercises
  • Sound waves and sound Sound
    waves. Frequency. Amplitude. Intensity. Speed ​​of sound. Sound propagation. Theoretical notes and exercises
  • Research and development
    Publications of physics research and development submitted by individual researchers and theorists
  • One more step
    Quantum Physics Articles
  • Horizon Magazine Publications Horizon Magazine
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