Sustainable energy, specifically renewable energy or green energy, is an energy source which can be replenished, that is essentially inexhaustible. Sustainable sources of energy include solar, wind,...
Simple Machines A simple machine is a non-powered mechanical device that changes the direction or magnitude of a force. In general, they can be defined as...
Moment of a Force The Effects of Turning Forces Explain the effects of turning forces A force is a push or pull which when applied to...
What is Force? A force is an interaction that causes a change. In mechanics, a force is an interaction that causes a change in velocity (an...
Concept of temperature The Term Temperature Define the term temperature Temperature is property of a body, which decides which way heat will flow when it is placed...
Electric current is the rate of charge flow past a given point in an electric circuit, measured in Coulombs/second which is named Amperes. In most DC...
Motion In Straight Line Motion is the change of position of an object from one place to another. There are two types of motions; i.Circular motion-Is...
Thermionic Emission Thermionic emission is the discharge of electrons from heated materials, widely used as a source of electrons in conventional electron tubes (e.g., television picture tubes)...
Semi Conductors The Concept of Energy Band in Solids Explain the concept of energy bands in solids In solid-state physics, the electronic band structure (or simply band...
Light is aform of energy which controls the sense of vision. Reflection of Light from Curved Mirrors Difference between Concave and Convex Mirrors Distinguish between concave...
