Length, time and volume are all examples of quantities close quantityA property that can exist as a magnitude, usually with a numerical value. For example, speed (quantity) is measured in metres per ...

CBSE Class 11 Physics notes are available here. These notes are based on chapter 2 of Class 11 NCERT textbook (Units and Measurement). Name some important topics covered in this article are Dimension ...

A high-tech version of a balance scale has just brought scientists a critical step closer toward a new and improved definition of the kilogram. The scale, called the NIST-4 watt balance, has conducted ...

In modern society, indirect measurement is ubiquitous in which unknown information is transformed into the other physical quantity and is reconstructed mathematically from its measurement data.

CBSE Class 11 Physics notes on Chapter 2, Units and Measurement (Part 3) are available here. Important topics covered in this part are Accuracy, Precision, Errors of ...