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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

Intro to PhysicsMrs. Coyle

Physics is the study of the physical world

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


Physics
Physics

Golden Gate Bridge

  • Mechanics

    • Kinematics (motion)

    • Statics, Dynamics (forces)

  • Electricity

  • Magnetism

  • Waves

  • Optics (geometric optics)

  • Nuclear Physics (Modern Physics)


Physics1
Physics

  • The most basic science.

  • The foundation of other sciences

  • What?

  • Why?

  • How?

  • When?


Aristotle greek 4 th century bc
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
Democritus

  • Greek who devised the first atomic theory.


Galileo galilei 1564 ad
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
Isaac Newton

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


A glance at some scientists who studied electricity and magnetism
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
The BIG Guy Magnetism

  • 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
The Scientific Method Magnetism

  • Steps followed during scientific investigations.


Scientific method
Scientific Method Magnetism

  • 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
Law or Principle Magnetism

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

  • Laws change or are abandoned when contradicted.


Scientific fact
Scientific Fact Magnetism

  • Observation

  • May change


Science and technology
Science and Technology Magnetism

  • Science  Pure

  • Technology  Applied


Math and units
Math and Units Magnetism

  • 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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