1.1 Definition and Nature of Physics

• The word physics is thought to have come from the Greek word Phusis, meaning nature.
• Physics is a branch of natural science aimed at describing the fundamental aspects of our universe.

• Physics enables you to understand the working principles of

• Physics explains physical phenomena such as

• The difficulty of walking on a smooth plane

• why an electric fan rotates

• Physics helps you discover some of the unknown parts of nature

• Physics helps you to understand some concepts in other subjects like: Biology, Chemistry, Geology, Astronomy, etc. 

• Studying physics helps you understand concepts, relationships, principles and laws of nature.
• A person who studies physics is called a Physicist. 

Some of the fields in which physics is applicable include: 

• The field of transportation 

• The field of aviation and space science

• The field of medicine 

• The field of forensic and military science 

• The field of meteorology and metrology