Physical World and Measurement

Every physical quantity is measured by comparing it to a fundamental, arbitrarily chosen, internationally agreed on reference standard known as a unit. A physical quantity measurement is stated as a number (or numerical measure) followed by a unit that is further calculated by dimensional formula. Even though the number of physical quantities appears to be […]

If you are looking to examine the Seven Base SI Units, you are at the correct place. Read out the entire article to know about the SI units and how often they are used.  The various individual units (e.g., expressed in power, kilos, pounds, etc.) and the systems of the units have made possible the

Previously, scientists from various countries used different measurement methods. Until recently, three such systems, the CGS, the FPS (or British) system, and the MKS system, were widely used. The following were the basic units for length, mass, and time in these systems: In the CGS system, they were centimetre, gram, and second;  In the FPS

Introduction Measurement is the muse of all experimental science. In an experiment, we may get a different value than the true value due to either faulty equipment, carelessness, or other reasons. This causes an error in measurement. The result of each measurement by any measuring device contains some uncertainty. This uncertainty is called an error.

This article introduces two key concepts: Error in the measurement  Experimental uncertainty The article explains each concept and provides examples for each one. One can become aware of how measurements are performed and how we communicate them to others. Everyday examples of measurement errors exist. For example, when someone buys clothes at a store, they

All physical “matter” contain one or even more “characteristics”, and each property of a matter seems to be measurable and quantifiable by definition. An appropriate instrument can be used to evaluate a property. Therefore, a “magnitude” and its “unit” must be presented to quantify the measured result. A unit of measurement is described as “a

Unit is a necessary and important quantity in physics. This article covers measuring units, length and weight of given objects, and the amount of a substance. Any other quantity of that kind can be expressed as a multiple of the unit of measurement. A unit of measurement is a standardised quantity of physical property used

A laboratory thermometer, sometimes referred to as a lab thermometer, is a device that is used to measure temperatures other than those of the human body.  Heat Heat is the energy delivered from one body to another as a response of a temperature differential. When two bodies of differing temperatures come together, energy is transferred—that

As the study of science and technology evolved every day, the scholars of metrics and measurements in the 1790s decided to provide a universal measuring system. The scientists adopted a universal metric system of measurements to understand the quantity of any given object.  The metric system is the currently globally recognised measurement system, succeeding the

The Celsius scale, also known as the centigrade scale, is a temperature scale based on water’s freezing point of  0℃ and boiling point of 100℃. The Fahrenheit scale is based on the freezing point of water being 32℉ and the boiling point of water being 212℉. Temperature The physical attribute of an object or body