Physics SS1 First Term
WEEK 3
Time 
PerformanceObjectives
Students should be able to:
1. Examine the concept of time
2. Determine the ways of measuring time

Content 
Introduction
Both Galileo and Newton and most people up until the 20th century thought that time was the same for everyone everywhere. This is the basis for timelines, where time is a parameter. Our modern conception of time is based on Einsteins theory of relativity, in which rates of time run differently depending on relative motion, and space and time are merged into space time, where we live on a world line rather than a timeline. Thus time is part of a coordinate, in this view, Physicists believe the entire Universe and therefore time itself began about 13.8 billion years ago in the big bang.
Time itself can be defined as that in which developments and happenings can be distinguishably analyzed with reference to before and after.
In the International System of Units (SI), the unit of time is the second (symbol is S). The most natural time unit is the.... View More