Physical World and Measurement

In 1972, Anders Celsius invented the Celsius scale, which is a temperature scale. When it was first established, the numbers 100° and 0° were used to indicate the freezing and boiling points of water, respectively. The melting point of water is represented by 0° whereas the boiling point of water is represented by 100°. The Centigrade scale […]

The force operating on a unit area is measured as pressure. Density is the ratio of an entity’s mass to its volume, and it is a measure of how tightly any given thing is packed. There is a direct link between pressure and density. A change in pressure causes a change in density, and vice

Earlier, scientists considered energy and matter to be unrelated and different from one another. However, many new phenomena and discoveries took place during the 19 to 20th centuries; during that time, Plank’s theory too came into existence by Max Plank, a German physicist. The article shares about the quantum theory of radiation given by Max

Physics is one of the most critical branches of science that deals with fundamental phenomena. These include the laws of motion, laws of nuclear fission, laws of electrodynamics, and so on. In order to apply the laws and concepts of Physics, it is important to know about physical quantities and measurement, measurement history, basic measurement

Physicists define a physical quantity as a physical property of a material or system that can be measured and defined in terms of its value. A value is a mathematical expression representing a physical quantity that is formed by multiplying a numerical value by a unit of measurement in algebraic notation. n kg is a

The metre scale is a device used to measure the length of any item. For instance, the length of a rectangle is 10 metres. The magnitude of the length is 10 in this case, and the unit of length is the metre. 1 metre on the metre scale equals 100 centimetres. Length is measured on

To understand any simple concept, we need to understand the fundamental definition of it. In the world of physics, every physical quantity is compared with its standard unit and that can be defined as measurement. So that brings us to understand what a standard unit is! Any unit which can be easily reproduced and also

Physics and measurements are used in everyday life. Physics is the study of nature and its laws. For example, knowing Newton’s principles of motion and gravitation can explain the moon’s orbit around the earth, an apple falling from a tree and the tides in the sea on a full moon night. Physics is concerned with

There is an axial deformation in the length of a body whenever it is subjected to an axial tensile or compressive load. Longitudinal Strain is the ratio of axial deformation to the original length of the body. Strain Strain is the amount of distortion that an object undergoes as a result of the application of

We convert a unit of measurement into a different unit but with the same property. In physics, we often see questions that ask us to convert between various units. If we take the example of time, we can express it in hours, minutes, and seconds. The distance can be expressed in miles, kilometres, metres, and