Intro to physics mrs coyle
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Intro to Physics Mrs. Coyle. Physics is the study of the physical world including motion, energy, light, electricity, magnetism, sound etc. Physics. Golden Gate Bridge. Mechanics Kinematics (motion) Statics, Dynamics (forces) Electricity Magnetism Waves Optics (geometric optics)

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Intro to Physics Mrs. Coyle

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Intro to PhysicsMrs. Coyle

Physics is the study of the physical world

including motion, energy, light, electricity, magnetism, sound etc.


Physics

Golden Gate Bridge

  • Mechanics

    • Kinematics (motion)

    • Statics, Dynamics (forces)

  • Electricity

  • Magnetism

  • Waves

  • Optics (geometric optics)

  • Nuclear Physics (Modern Physics)


Physics

  • The most basic science.

  • The foundation of other sciences

  • What?

  • Why?

  • How?

  • When?


Aristotle (Greek 4th Century BC)

  • Logic

  • Studied motion

    • Natural and violent motion

    • 4 elements:

      earth, water,air, fire

  • Geocentric view

  • Aristarchos(310-230 BC), disagreed and believed in heliocentric view.


Democritus

  • Greek who devised the first atomic theory.


Galileo Galilei (1564 AD)

  • Father of the scientific method (along with the Englishman Francis Bacon 1500’s).

  • Studied motion.

  • Agreed with the Greek Aristarchos and Polish Copernicus (1473-1543) on heliocentric view point. This lead to his house arrest.


Isaac Newton

  • English(1642-1727) related force and motion and studied light.


A Glance at Some Scientists who Studied Electricity and Magnetism

  • American Benjamin Franklin (1706-1790), experimented with electricity.

  • Michael Faraday (1791-1867), English with a grammar school education,

    found that a moving magnet induces electric current to flow.


The BIG Guy

  • Albert Einstein (1879-1955)

  • Relativity: there is no absolute frame of reference that is at rest.

  • Photoelectric effect (Light is quantized) (Nobel Prize)

  • Related mass and energy E=mc2


The Scientific Method

  • Steps followed during scientific investigations.


Scientific Method

  • Recognize a problem

  • Hypothesis- educated guess, testable

    • When tested and confirmed becomes a law

  • Observation -measurement, data collection (experiment)

  • Theory – information including tested hypothesis

  • Conclusion


Law or Principle

  • A hypothesis that has been repeatedly tested and not contradicted.

  • Laws change or are abandoned when contradicted.


Scientific Fact

  • Observation

  • May change


Science and Technology

  • Science  Pure

  • Technology  Applied


Math and Units

  • Math- the language of Physics

  • Units SI – International System

    • Basic Units MKS

      • Meter m

      • Mass kg

      • Time s

  • National Bureau of Standards

  • Prefixes


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