Introducion of Time
This chapter provides an introduction of time. Topics include what is time; standard unit to measure duration of time; how long is one 'second'.
What Is Time?
What Is Duration?
Second Prefixes and Other Units
List of Various Durations
- Time is a property of our universe that gives us a sense of age of living things and speed of changing object.
- "second" is the standard unit to measure duration in time.
- Today, "second" is officially defined as
"the duration of 9,192,631,770 periods of the radiation corresponding to the transition
between the two hyperfine levels of the ground state of the caesium 133 atom".
- Roughly, a "second" is the half period of a one-meter long pendulum.
Table of Contents
About This Book
Introduction of Space
Introducion of Frame of Reference
►Introducion of Time
Introduction of Speed
Newton's Laws of Motion
Introduction of Special Relativity
Time Dilation in Special Relativity
Length Contraction in Special Relativity
The Relativity of Simultaneity
Introduction of Spacetime
Minkowski Spacetime and Diagrams
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