Found 21 Articles for Units and measurements

An energy meter is a device used for measuring the amount of electrical energy consumed by a load over a certain period of time. This device is essential for recording the electricity usages so that consumers can monitor and change the energy consumption patterns to reduce energy consumption and hence the bill amount. An energy meter is an important link between power supplier and consumers that allows them for efficient measurement of electricity supplied or consumed. What is an Energy Meter? An electrical device or instrument which is used for measuring the amount of electricity consumed by the consumers over ... Read More

A smart meter is an electrical instrument used for measuring electrical energy consumed and other electrical parameters of the electricity supply system. It is basically a type of energy meter equipped with more advanced metering technologies. The main advantage of using a smart meter is that it does not require any manual reading system for billing and other purposes. Instead, it can automatically send the data through communication channels to the electricity company. Therefore, smart meters help in reducing the operational cost and time. In this article, we will explain the major advantages and disadvantages of smart meters. Before ... Read More

Introduction In the field of engineering, measurement is very important. Mostly, we use meter scales for measuring the objects in our daily life. Some objects are very small in size so these cannot be measured by the normal scale. Thus, we need a device that can measure the size, diameter, etc of a very small range. The micrometer is a device that can help us to measure the size or diameter of a ball, wire, or pipe with high accuracy. However, the use of such devices is somewhat confusing because it needs some basic knowledge of small units of lengths ... Read More

Introduction Measurement is the comparison of an unknown quantity with a known value. Measurement is a system of measuring. Measurement is always a numerical value. Measurements include length, mass, volume, temperature, etc. It is associated with geometry, trigonometry, algebra, etc. Units were given to the measured values. Fundamental units for length, mass, and time are m, kg, and sec. There are many methods for measuring length. But the distance between the stars and the distance between the objects in space are done by using triangulation and parallax methods. What do you mean by the length triangulation method? The distance between ... Read More

Introduction We know that everything is made up of matter and the different states of matter are solid, liquid, and gas. The mass and weight of each state of matter are not the same. That is why a precise explanation of mass and weight is necessary. It is important to understand the scientific use and difference between these concepts. What is Mass? The amount of matter contained in a body is known as mass. It is a constant fundamental quantity of the body that remains the same in every place. Ordinary weighing balances are used to measure the mass. ... Read More

Introduction Measurement denotes the comparison of an unknown quantity with a known quantity. It is the measure of quantity. Length, mass, time, electric current, temperature, amount of substance, and luminous intensity are the seven fundamental quantities. There are many systems of units used such as the KGS system, CGS system, and International SI system. Different systems assign different units for basic elements. If the quantity has only magnitude then it is called a scalar quantity. Example mass, distance, time, etc. If the quantity has both direction and magnitude then it is called a vector quantity. Examples are velocity, displacement, force, ... Read More

Introduction Mass of the body is the total quantity of matter present inside it. We know that matter is made up of atoms and molecules. Therefore, when we say that mass of the body is ‘n Kg’, it means that the total of individual masses of all the atoms and molecules present inside the body equals ‘n Kg’. The momentum and mass of a body are related to each other, provided that the body is in motion. Momentum is the measure of energy possessed by the moving body. What is Mass? The total amount of matter present inside a physical ... Read More

Introduction Accuracy and Precision play an important role while measuring anything. It is not possible for measurements to be completely error-free. Thus, when we are performing scientific calculations, our answers will carry certain errors, which can vary each time we repeat the experiment. For example, the acceleration due to gravity on Earth is 9.80665 m/s2, but if you measured it experimentally, you would get a different value. Hence, errors are inevitable. The inevitability of errors necessitates ways to describe them. Accuracy and precision are two essential terms that help us understand the error in our measurement. In this article, we ... Read More

Introduction Metrology is the comparison of physical quantity with its equivalent quantity. Measurement is the basis of all scientific research and experiments. Physics is a quantitative science. Physicists always deal with numbers that represent physical measurements. It is the foundation for all technological development. The accuracy of measurement is more important in science. But sometimes we fail to calculate the exact value in the measurement. It's quite hard to find the exact value of any measurement. In such cases, it will cause an error. So there is no possibility to find accurate measurements. For example, when we buy any ... Read More

Introduction Dimensions, in very simple words, are to study the nature of any object mathematically. To check how tall a person is, or to see how big the circle is, we have been using dimensions with the magnitude of course for quantifying the objects around us in dayto- day life. Dimensional analysis just refers to the relationship of the different physical quantities with the units of measurement. In this article, we shall discuss what exactly it means, where it comes from and what are its various applications that we see around us at present. What is Dimensional Analysis? Dimensional analysis ... Read More