Physical Science 101
Introduction to Lab
John Ziman, What is Science? 1968
What is a lab?
Lab is short for laboratory - a place providing opportunity for experimentation,
observation or practice in a field of study.
This lab time is for practical experience.
You are here to learn.
You will be tested on your knowledge and skill.
Working on Lab Assignments
Do your own work.
You may work in groups or alone but you alone are responsible for knowing the material.
I've seen students fail the lab because they let someone else do the work.
SCIENTIFIC METHOD
Observation and experimentation are the keys to science
Does a problem exist?
Search of published materials: has the question been answered?
If no answer has been found...
Experiments are set up and run based on the problem and hypothesis
Theory: A hypothesis that has been substantiated by experimentation and observation
Testing of the theory’s predictions.
Reporting of the experimentation, observations and theory.
Do others observe the same thing?
What is science?
What is technology?
Science is based on data.
What is the basis of religion?
What is faith?
This course is about science and is based on reproducible observational and experimental data and evidence.
Why make observations or conduct experiments?
The Scientific Method is a system used in science to answer questions
8 steps
Definition of the Problem - Step 1
Investigator's observations.
Literature Search - Step 2
Sources of information:
Instittuions:
Experts in the field:
Media:
Hypothesis - Step 3
Hypothesis is proposed.
Possible answer to the problem based on the available information
Analysis of the collected data
Experimentation and/or Observation - Step 4
Additional observations are made
Analysis of the collected data
Conceptualization of a Model - Step 5
Model: a representation of reality, generally a simplification
Additionally, theories will make predictions
Revision of Theory - Step 6
This additional data will:
1. Show that the theory is:
2. Show that the theory is:
3. Show that the theory is:
Publication of the Results - Step 7
Results must be honest and unbiased.
Verification by Other Investigators - Step 8
Can the experiments be reproduced?
Do others reach the same conclusions?
If yes, theory may become well accepted
If no, new theories may be needed to explain original problem
Science and Religion
Science
Knowledge based on observation and experimentation, and the collection and analysis of data.
Technology
The application of science.
Science is not the search for the ultimate truth.
Science is not a belief.
Science is not a religion.
Religion
Science