Units & Measurements – Hub of related Posts

Here goes the list of our posts on Units & Measurements and related topics and subtopics.

Fundamental Constants (Physics & Chemistry)

In this post, we present an image (infographics) that contains a set of fundamental constants used in Physics and Chemistry with their symbols and values. This will be a ready ...
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AQA GCSE Physics – Equations & Formulae from Particle Model of Matter

The image below shows a list of equations and formulae from chapter "Particle Model of Matter" of the AQA GCSE Physics syllabus. This is also helpful for all other equivalent ...
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Dimensional formula of Gravitational Field Strength

Here, we will find out the dimensional formula of Gravitational Field Strength. Gravitational Field Strength is defined as the gravitational force per unit mass in the gravitational field. The formula ...
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Dimensional formula of G | Dimensional formula of Universal Gravitational constant

Here, we will find out the dimensional formula of the Universal Gravitational constant or G. The formula of the Gravitational Force between two masses M and m is F = ...
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Dimensional formula of Pressure Energy – how to find it?

Here, we will find out the dimensional formula of Pressure Energy. The formula of the Pressure Energy = pressure × volume The dimensional formula of pressure = [ML–1T–2] [see here ...
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Dimensional formula of Pressure gradient – how to find?

Here, we will find out the dimensional formula of the Pressure gradient. The formula of the Pressure gradient = pressure/distance The dimensional formula of pressure = [ML–1T–2] [see here how ...
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Dimensional formula of Velocity gradient – how to find?

Here, we will find out the dimensional formula of the Velocity gradient. The formula of the Velocity gradient = velocity/distance The dimensional formula of velocity = [M0LT–1] [see here how ...
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Dimensional formula of Surface energy per unit area – how to find it?

Here, we will find out the dimensional formula of Surface energy per unit area. This term is related to surface tension. This surface energy relates to the surface of a ...
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Dimensional formula of Surface Tension – how to find it?

Here, we will find out the dimensional formula of Surface Tension. The formula of Surface Tension = force/length The dimensional formula of force = [MLT–2] [see here how to find ...
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Dimensional formula of Modulus of elasticity – how to find it?

Here, we will find out the dimensional formula of the Modulus of elasticity. This Dimensional formula will be applicable for 3 different sets of elasticity modulus: These are (a) Young's ...
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Dimensional formula of Strain – how to find it?

Here, we will find out the dimensional formula of Strain. This Dimensional formula will be applicable for all the following types of strain, - (1) Longitudinal Strain (2) Shearing Strain, ...
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Dimensional formula of Stress – how to find it?

Here, we will find out the dimensional formula of Stress. This Dimensional formula will be applicable for all the following types of stresses, - (1) Longitudinal stress (Tensile and Compressive ...
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Dimensional formula of Pressure – how to find it?

Here, we will find out the dimensional formula of Pressure. The formula of Pressure = force/area The dimensional formula of force = [MLT–2] [see here how to find the dimensional ...
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Dimensional formula of Momentum – how to find?

Here, we will find out the dimensional formula of Momentum. The formula of Momentum = mass x velocity The dimension of mass = [M] The dimensional formula of velocity = ...
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Dimensional formula of Power – how to find?

Here, we will find out the dimensional formula of Power. The formula of Power = Work/time The dimensional formula of work = [ML2T–2] [see here how to find the dimensional ...
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Dimensional formula of Work – how to find?

Here, we will find out the dimensional formula of Work. The formula of Work = force x displacement The dimensional formula of force = [MLT–2] [see here how to find ...
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Dimensional formula of Impulse – how to find?

Here, we will find out the dimensional formula of Impulse. The formula of Impulse = force x time The dimensional formula of Force = [MLT–2] [see here how to find ...
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Dimensional formula of force – how to find?

Here, we will find out the dimensional formula of force. The formula of force = mass x acceleration The dimension of mass = [M] The dimensional formula of acceleration = ...
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Dimensional formula of acceleration – how to find?

Here, we will find out the dimensional formula of acceleration. Formula of acceleration = velocity/time The dimensional formula of velocity = [M0LT–1] [see here how to find the dimensional formula ...
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Dimensional formula of velocity – how to find?

Here, we will find out the dimensional formula of velocity. The formula of velocity = displacement/time The dimension of displacement = [L] The dimension of time = [T] Hence, Dimensional ...
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Dimensional formula of Frequency – how to find?

Here, we will find out the dimensional formula of Frequency. The formula of Frequency = 1/time period The dimension of time period = [T] Hence, Dimensional formula of Frequency = ...
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Dimensional formula of density – how to find?

Here, we will find out the dimensional formula of density. Formula of density = mass/volume The dimension of mass = [M] The dimension of volume = [L3] Hence, Dimensional formula ...
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SI Conversion | Conversion of popular units

In this post, we listed data required for the conversion of units of different physical quantities. These may be used while solving numerical problems in Physics (for educational purposes). Kilometer ...
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Dimensions & Dimensional formulas of physical quantities

In this post, we are going to list the formulas, dimensions, and dimensional formulas of important physical quantities in a tabular format. In these formulas, M stands for mass, L ...
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Converting L atm to Joule | Litre Atm to Joule

Here in this post, we will convert L atm to Joule. L atm is also known as Litre Atmosphere. L atm to Joule L atm is the product of 2 ...
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Measuring the resistance of a component – different ways

In this post, we are going to discuss different ways of measuring the resistance of a component. Resistance is defined as R = V/I. This obviously gives ways of measuring ...
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How to find resistance using Resistor Colour Codes

Small resistors use coloured or painted bands which represent their resistive value and tolerance. These coloured painted bands produce a system of identification generally known as a Resistors Colour Code ...
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Dimensional Analysis & its uses with examples

This topic covers Dimensional Analysis & its uses. The term dimension is used to refer to the physical nature of a quantity and the type of unit used to specify ...
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Measuring frequency & voltage of an Alternating Current (AC) with CRO

An oscilloscope can be used to measure the frequency and voltage of an alternating current. There are two types of oscilloscopes. The traditional cathode-ray oscilloscope (CRO) uses an electron beam ...
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Different types of Pressure gauges & how they operate

Pressure gauges measure the pressure exerted by a fluid, in other words by a liquid or a gas. We will cover 3 types of pressure gauges here, and these are ...
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The oscilloscope & its signal attribute, AC and DC graph

An oscilloscope is an instrument used to investigate electrical signals. The screen of the oscilloscope displays a trace of the electrical signal and in almost all cases this is a ...
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Estimation of physical quantities with Significant Figures and Order of Magnitude

Estimation of physical quantities brings in the concepts of Significant Figures and Order of Magnitude. It is always a good idea to be able to estimate the size of a ...
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Random and systematic errors in physical measurements or physics experiments | Precision and accuracy & Uncertainty

Here we will briefly define and explain the common terms related to Random errors and systematic errors in physical measurements (also in Physics experiments). We will talk about terms like ...
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[pdf notes] Unit Systems in Physics – grade 10 Notes download | class 11 physics notes on Unit System

This Unit Systems in Physics Notes [PDF] is primarily for the grade 10 (10th grade) physics syllabus of different international boards. This also covers the class 10 physics syllabus on ...
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Determination of Density of a solid and a liquid

Determination of Density of a Solid by Using a Measuring Cylinder Dividing the mass of a solid by its volume gives its density. The mass of a solid can be ...
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electronvolt – what is electronvolt(eV) and how is eV related to Joule?

The SI unit of energy joule is too large a unit of energy for the microscopic world. A more convenient unit of energy for the microscopic world is the electronvolt, ...
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How to convert between degrees and radians -degree and radian conversion formulas

Angular displacement is often expressed in one of three units. The first is the degree, and it is well known that there are 360 degrees in a circle. The second ...
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What is the difference between fundamental quantity and derived quantity?

Length, Mass, and Time – Each of these 3 physical quantities doesn’t depend on any other quantity for its measurement. So these 3 are called Fundamental quantities. Other quantities like ...
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Conversions of Volume units – litre to m3 or litre to cm3 | liter to m3 or liter to cm3

Very often while solving numerical problems of physics we need to take the help of Conversions of Volume units - litre to m3 or litre to cm3 or vice versa ...
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km/h to m/s – unit conversion from kilometer/hour to meter/second

figure 1: km/h to m/s - unit conversion from kilometer/hour to meter/second and vice versa Km/h to m/s or km/hr to m/s conversion: To convert km/hr value to m/s value ...
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Any Difference between mole and molecule? |Any difference between mol or mole?

While studying the chapter on gas laws you must have come across the term 'mole' or 'mol'. You may have seen gram-mol as well in that chapter. I find many ...
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Density & Relative density

Density is the mass per unit volume. The unit of density in SI is Kg/meter3. The relative density or specific gravity of a substance is the ratio of its own ...
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