What are UNITS and Dimensions REALLY? Part 3

Описание: Discover the fundamental concepts of units and dimensions, and how they relate to the physical world. In this video, we'll delve into the world of measurement and explore what units and dimensions really are, and why they're essential in various fields such as physics, engineering, and mathematics. From the basics of length, mass, and time to more complex concepts, we'll break down the intricacies of units and dimensions, providing a deeper understanding of these crucial principles. Whether you're a student, educator, or simply curious about the world of physics, this video is designed to provide a comprehensive and engaging explanation of units and dimensions. Join us as we uncover the underlying structure of the physical world and gain a new appreciation for the importance of units and dimensions in our daily lives.
Description of Units and Dimensions

In physics, every physical quantity (like length, mass, time, velocity, force, etc.) needs two things to be understood properly: its nature and its measurement.

1. Dimensions describe the fundamental nature of a physical quantity in terms of basic quantities such as length , mass , time , electric current , temperature , amount of substance , and luminous intensity .

Example:

Speed has dimensions of because it is length per time.

Force has dimensions of .



👉 Dimensions help in understanding what category a physical quantity belongs to and are useful for checking the correctness of formulas (dimensional analysis).


2. Units are the standard reference values chosen to measure physical quantities. They provide a numerical value to the dimensions.

Example:

Length → meter (m), centimeter (cm), inch, foot.

Time → second (s), minute (min), hour (h).

Force → newton (N) in SI system.
   • UNIT AND DIMENSION PART 2 || UnitAndDimens...  
   • What is SET THEORY Really About Now #set,#...  
   •  Testing Meatal in Hydrochloric Acid,acid ...  
   • ELECTRICITY NUMERICAL PROBLEM,#numericals,...  
#unit #dimension #BPSC #UPSC #JEE #ITI #mathtricks #mathchallenge #mathematics