In physics, we symbolise everything with an English/Greek alphabet, such as the speed of velocity, wavelength and other quantities as well. To make it more convenient for the students, teachers or ...

Deluged by responses to his request for your favourite units, Robert P Crease discovers that non-SI units persist, and are sometimes even popular, among the physics community Setting the standard ...

These units, together with the astronomical second (based on the mean solar day) as the unit of time, constituted a mechanical unit system. Following the introduction of the ampere, the kelvin and the ...

Class 11 Physics Chapter wise revision notes for Chapter 2 Units and Measurement (Part I) are available here. These notes are based on latest CBSE Class 11 Physics syllabus and NCERT textbook for ...

I disagree with your suggestion to promote the radian to the International System of Units (SI units) to address the confusion over dimensionless numbers (Nature 548, 135; 2017). On the contrary, this ...

New prefixes for the world’s largest and smallest numbers have been confirmed by a vote at the General Conference on Weights and Measures (CGPM) in Versailles, France, on Friday. The suggested ...