Chapter 1: Physical
Quantities and Measurements
Introduction To Science
“The knowledge gained through the observations and
experiments is called Science.”
The word
“Science” is derived from a Latin Word “Scientia”, which means knowledge.
Before the
18th century various aspects of material objects were studies under
a single subject called “Natural Philosophy.
Branches of Natural Philosophy:
It was divided
into two branches as following:
1- Physical Sciences
2- Biological Sciences
Physical Sciences: “It deals with the study of non-living
things.”
Biological Sciences: “It deals with the study of living
things.”
Importance of Measurements in Our Life:
Measurements
are not confined to science. They play a vital role in our life to describe and
understand the physical world. Over the centuries, man has worked and improved
the method of measurements.
