Van de Graaff Generator American Physicist, Robert J. Van de Graaff was the person behind this invention. A Van de Graaff generator is an electrostatic generator and it is used to generate high voltages of a few millions of volts. What is Van de Graaff generator? Van de Graaff generator is a device which is Read more about Van de Graaff Generator[…]
Torricelli’s Law Torricelli’s law, also known as Torricelli’s theorem, statement in fluid dynamics that the speed (v), of fluid flowing out of an orificeunder the force of gravity in a tank is proportional to the square root of the vertical distance between the liquid surface and the centre of the orifice and to the square root of twice Read more about Torricelli’s Law[…]
Stoke’s Law When a body moves through a fluid it experiences a resistive force because the presence of the fluid. Every fluid has a property called viscosity, the resistance of a fluid to anybody moving through it. Thicker, more viscous materials resist more the movement of bodies through them than thinner, less viscous materials. The Read more about Stoke’s Law[…]
Equation of Simple Harmonic Motion Simple harmonic motion as a motion in which the restoring force is directly proportional to displacement of the body from the mean position. The differential equation of simple harmonic motion is given by: . The necessary and sufficient condition for a motion to be simple harmonic is that the net Read more about Equation of Simple Harmonic Motion[…]
Reynold’s Number The Reynold’s number is named after the British Physicist Osborne Reynold’s. He discovered this while observing different fluid flow characteristics like flow of a liquid through a pies and motion of an airplane wing through the air. He also observed that the type of flow can transition from laminar to turbulent quite suddenly. Read more about Reynold’s Number[…]
Stefan Boltzmann Law What is Stefan Boltzmann Law? The Stefan – Boltzmann Law deals with the black body radiation. It states that the total energy radiated per unit surface area of a black body in unit time is directly proportional to the fourth power of the black body’s thermodynamics temperature. Formula to find the Stefan Read more about Stefan Boltzmann Law[…]
Doppler Effect Doppler Effect refers to the change in wave frequency during the relative motion between a wave source and its observer. It was discovered by Christian Johann Doppler who described it as the process of increase or decrease of starlight that depends on the relative movement of the star. What is Doppler Effect? The Read more about Doppler Effect[…]
Characteristics of a Transistor A transistor is a semiconductor device which is used to switch or amplify electronic signals and electric power. It consists of semiconductor material mostly with at least three terminals for connection to an external circuit. Transistor characteristics are the plots which represent the relationships between the current and the voltages of a transistor Read more about Characteristics of a Transistor[…]
Applications of Parallel Plate Capacitors When capacitors are connected in parallel, the total capacitance is the sum of the individual capacitor’s capacitances. If two or more capacitors are connected in parallel, the overall effect is that of a single equivalent capacitor having the sum total of the plate areas of the individual capacitors. As we’ve Read more about Applications of Parallel Plate Capacitors[…]
Critical Velocity What is Critical Velocity? Critical velocity is the speed and direction at which the flow of a liquid through a tube changes from smooth to turbulent. It is defined as the speed at which falling objects reaches when both gravity and air resistance are equalised on the object. The critical velocity is that Read more about Critical Velocity[…]