Thousands of years ago, people in southern England built Stonehenge, which was used as a calendar. The position of the sun and stars relative to the stones determined seasons for planting or harvesting.
Table of Contents
Physics
Physics is the branch of science that deals with matter, energy and the relationship between them.
Main Areas of Research in Physics
The study of physics involves laws of motion, the structure of space and time, the nature and types of forces, the interaction between different particles, the interaction of radiation with matter etc.
Natural Philosophy
Initially, the observations of man about the world around him give birth to the single discipline of science, called natural philosophy.
Physical and Biological Sciences
There was a huge increase in the volume of scientific knowledge uptill the beginning of nineteenth century and it was found necessary to classify the natural philosophy into two branches, the physical sciences and the biological sciences:
| Physical Sciences | Biological Sciences |
| Physical sciences deal with non-living things. Examples: Physics, Chemistry, Astronomy | Biological sciences deal with living things. Examples: Zoology, Botany etc. |
The major outlines of Chapter 1 of 11th Physics titled “Measurements” contains following topics:
