Introduction Astrophysics deals with the knowledge of the universe beyond this Earth. It explores the processes that occur in the depths of space and astrophysicists also study the physics of the various planets and stars in and beyond and the solar system. Closer to home, we have a field of science known as geology, which […]
Introduction Electronics is a branch of physics that focuses on the behavior of electrons in electronic circuits. Unlike classical electrical engineering, electronics employ active devices as components. Note that active devices are devices that can control the flow of electricity in a circuit. On the other hand, passive components only consume electricity but cannot regulate […]
Introduction In physics, there are two types of physical quantities: those that contain a direction as well as magnitude and those that contain only direction. The former are known as vector quantities and the latter are known as scalars. Time, temperature, mass, etc. are scalar quantities since there is no physical sense for mass to […]
Introduction In physics, we measure energy and work in units of Joule, one unit of which is equal to applying 1 Newton of force over a distance of 1 meter. In various objects, applying force or stress leads to the object heating up and the amount of heat produced is equal to the work done. […]
Introduction Acceleration is a physical quantity that describes change in velocity over a given time interval. It is a vector quantity with both magnitude and direction, and is measured in metres per second squared (\(m/{s^2}\)). Acceleration can be thought of as the derivative of velocity or the second derivative of position. An object moving at […]
Introduction Heat in an object does not remain stationary and tends to move from high-temperature to low-temperature areas. Thus, overheated materials tend to cool down while cold materials tend to absorb heat from the environment and warm up. Similarly, when two objects at different temperatures come into contact, heat energy is transferred from the hotter […]
Introduction Reflection is a phenomenon wherein, when a wave hits a surface, it does not get absorbed. Instead, the incident energy is sent back from the surface. Metal surfaces can reflect as much as 80-90% of the light when highly polished and most commonly, mirrors are made using a silver coating that is deposited on […]
Introduction There are two types of mirrors – flat and curved. Flat mirrors are commonly used in homes while curved mirrors have specific applications in science and industry. Curved mirrors are classified into two types – concave and convex. The concave mirror has an inward curve and resembles a broken arc of a hollow sphere, […]
Introduction Astrophysics is a field of study focused on celestial objects such as the sun, comets, stars, asteroids, meteoroids, and galaxies. It aims to understand the birth, life, and death of stars. Asteroids are small objects orbiting the sun and most of them are floating in the portions of our solar system that lie between […]