Sources of Electricity: From Fossil Fuels to Renewables
Electricity is a form of energy found in the charges of atoms. To harness this energy, we use devices that convert it into a useful form by making the charges…
Electricity – Its Classification
Electricity has existed since the beginning of the universe, as it originates from atoms and their charged particles. However, humans began harnessing this powerful form of energy only about 200…
Alternating Current, An Introduction
Here are a few terms that are frequently used when we talk about AC, that is, Alternating Current. Some of them are used when talking about Direct Current as well.…
Heat and Temperature, Are They Same?
Heat and Temperature are the words we use regularly, and we keep interchanging the meanings. Yes, they are different, but how? Why do we feel hot touching a cooker on…
Journey to The Double Decker Root Bridges of Meghalaya
Nestled in the north-eastern region of India lies Meghalaya, a state renowned for its enchanting natural beauty and vibrant cultural heritage. Meghalaya literally means "the abode of clouds". And we…
Kaziranga, the Kingdom of the One-Horned Rhino
Kaziranga National Park Information Centre Facing the rhino Imagine standing face-to-face with the majestic one-horned rhino as it grazes gracefully among the tall elephant grass. Welcome to Kaziranga National Park…
Artificial Magnets
We have made an introduction to magnets earlier. We read about natural magnets, and the earth's magnetic field. Now let us read about artificial magnets. What is an artificial magnet?…
Magnets, An Introduction
We all have played with magnets at some point in our childhood. Magnets have applications in many devices we use that we hardly notice them. A small introduction to magnets…
Cells, The Basic Unit of Life
What differentiates the living from the non-living? What do the living have that the non-living do not have? They have cells, that make up you, me, elephants, banyan tree or…
Nitrogen Cycle
Nitrogen is the most abundant gas in the atmosphere. It is useful for all living beings, and gets circulated from the atmosphere to the soil and back. a. It is…
Gravitation, Escape Velocity, and More
Why do things fall down? Why must we apply effort to make things go up? Do all things fall down at the same rate? Why do we not use an…
Electric Motor – An Overview of DC Motors
Have you seen a motor? Surely, we all have seen and used motors, from the mobile phone in our pocket to huge industries. We use motors at home and in…
Passive Elements in Electrical Circuits
Resistor, Inductor, Capacitor - These are the three passive elements in an electrical circuit. An electric circuit consists of active elements and passive elements. An active element supplies energy to the…
Mitochondria
What is Mitochondria? Mitochondria are the energy producing organelles (tiny organs) of cells. They are called the Powerhouse of the cell.Mitochondria have two membranes. The inner membrane contains many folds…
Living World: What’s the Difference Between… ?
Posts giving differences between two or more terms related to the living world, such as in plants, animals, humans, different biological terms, etc. They are not posted in any particular…
General Science: What’s the Difference Between…… ?
This page is a collection of articles that give differences between many objects, words, terms, etc. in general science. They are not listed in any particular order. The differences are…
Factors Affecting Resistance
Resistance to electric current is present in all materials. The amount of resistance depends on certain physical factors. What are they? We will see now. Resistance refers to the opposition…
Power and Energy
In electrical engineering, the terms power and energy are commonly used. While laypeople often use them interchangeably, they are not the same. So, what’s the difference? Let’s find out. We…
Moment of Force (Torque)
We observe motion all around us. Some motions are linear, meaning they occur along a straight line, while others are rotational. Let’s explore the force behind rotational motion and what…
Exercises – Moment of Force
1. A door is 3 feet wide. Calculate the moment of force when a force of 100 N is applied ata. the end of the door b. the middle of…