Unit 1 Introduction Lesson 1 A Scientific World View Eleanor Roosevelt High School Mr. Chin-Sung...

Unit 1 Introduction Lesson 1

A Scientific World View

Eleanor Roosevelt High School

Mr. Chin-Sung Lin

Physics Unit 1 – Introduction

L1 Physics – A Scientific World View

L2 Math – The Language of Physics

L3 Strategies of Learning Physics

Physics – A Scientific World View

What is Science?

Role of Physics – The Basic Science

Goal of Physics – A World View

Scientific Method & Process

Scientific Attitude

Criteria of Physics Models & Laws

Science, Technology and Society

What is Science?


What is Science?

Discover and study nature’s rules


What is Science?

A body of knowledge and the method to produce it

Body of Knowledge

Methods

Role of Physics


The Basic Science – Physics

Science grew out of natural philosophy



Branches into life & physical sciences

Life Science Physical Science

Biology

Zoology

Botany

Physics

Chemistry

Geology

Science



Physics is the most basic of all the sciences

Physics Particles, atoms, energy, forces, ……

Chemistry Molecules, reactions, equilibrium,……

Biology Genes, cells, organs, growth,……

Goal of Physics


The Goal of Studying Physics

To create a scientific world view



World view – A shared set of ideas that explain how the material world operates



Scientific world view vs. Common sense –sometimes the ideas might appear to be contrary to common sense

Scientific World View

Common Sense



Scientists use instruments to extend the range of human sensations

Scientific Method


Scientific Method

Galileo Galilei & Francis Bacon are the principal founders of the scientific method


Scientific Method

Observe

Recognize a problem

Develop a Hypothesis

Predict Consequences

Formulate Rules

Refine the Hypothesis

Publish Results

Develop Experiments


Scientific Method

Effective in gaining, organizing & applying new knowledge

The method is only a guideline to a good scientific practice


Scientific Method

Einstein’s view of scientific processes

Idea/Axiom

Consequences

Creative Leap

The Real World


Scientific Method

Einstein’s view of scientific processes

☛ A scientist makes a creative leap based on intuition to explain physical phenomena

☛ A powerful idea/axiom has many consequences

☛ The scientific process begins when the scientist develops consequences based on the idea/axiom

☛ Test these consequences against the real world

Scientific Attitude


Scientific Attitude

Fact – A close agreement by competent observers who make a series of observations of the same phenomenon

Fact


Scientific Attitude

Hypothesis – An educated guess that is only presumed to be factual until demonstrated by experiment

Scientific hypotheses must be testable

Hypothesis


Scientific Attitude

Laws or Principles – Hypotheses being tested repeatedly and not contradicted

Law/Principle


Scientific Attitude

Theory – A synthesis of a large body of information that includes well-tested hypotheses about certain aspect of the natural world

Theory


Scientific Attitude

Concept – An intellectual framework that is part of a theory encompasses the overriding idea that underlines various phenomena

Concept


Scientific Attitude

Not appealing to authority, personal preferences, popularity or selecting partial facts

STOP

Criteria of Physics Ideas & Laws


Scientific Method

Criteria of good scientific ideas

☛ As general as possible

☛ As simple as possible


Scientific Method

Criteria of a physics law

☛ Account for the known data

☛ Make Testable predictions

☛ Have a scientific basis

Science, Technology

& Society


Science, Technology & Society

Science vs. Technology – Targets

Questions about Nature Problems of the World



Science vs. Technology – Goals

Answer Theoretical Questions Solve Practical Problems



Science vs. Technology – Methods

Find Relationships Develop Tools & Procedures



Science vs. Technology – Results

Scientific Theories Engineering Solutions

Summary – A Scientific World View

What is Science?

Role of Physics – The Basic Science

Goal of Physics – A World View

Scientific Method & Process

Scientific Attitude

Criteria of Physics Models & Laws

Science, Technology and Society

The End

Unit 1 Introduction Lesson 1 A Scientific World View Eleanor Roosevelt High School Mr. Chin-Sung...

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