The extended solar spectrum refers to the electromagnetic radiation emitted by the Sun across a broad range of wavelengths. While we often associate sunlight with the visible light spectrum, the Sun actually emits radiation across a wide range of wavelengths, extending beyond what is visible to the human eye. The Sun’s spectrum spans from ultraviolet …
When a force acts at right angles to the direction of motion, no work is done on the object. This is because the force and the displacement vectors are perpendicular to each other, and the cosine of 90 degrees is zero. Therefore, according to the formula for work done: W = F · d cos …
Weight is a measure of the force of gravity acting on an object. It is a vector quantity, meaning it has both magnitude and direction. The weight of an object is proportional to its mass, and is given by the formula: Weight = (Mass) X (Gravitational Acceleration) where, gravitational acceleration is the acceleration due to …
Wave Motion refers to the transfer of energy through a medium by the propagation of disturbances or oscillations in the medium. Waves can be classified into two broad categories: mechanical waves and electromagnetic waves. Mechanical waves Mechanical waves require a medium in order to propagate, and include waves such as sound waves, water waves, and …
Heat is a form of energy that is transferred between two objects or systems due to a temperature difference. Heat can be measured in several units, including: Joules (J): Joules is the standard unit of energy in the International System of Units (SI). Heat can be measured in joules, which are equal to the work …
What is Weightlessness? Weightlessness is a phenomenon that occurs when an object or a person is in free fall or in orbit around a celestial body. In this state, the object or person experiences a sensation of weightlessness, even though they still have mass and are subject to gravity. Weightlessness occurs because objects or persons …
The simple pendulum oscillates due to the interplay between two opposing forces: the force of gravity and the tension force in the pendulum’s string or wire. When the pendulum is displaced from its equilibrium position, gravity pulls the mass downward, causing it to accelerate toward the equilibrium position. As the mass moves back toward the …
What keeps the simple pendulum oscillating in a simple Harmonic Motion? Read More »
Boiling is the process by which a liquid is converted to a gas or vapor phase throughout its bulk, as opposed to evaporation which occurs only at the surface of the liquid. Boiling occurs when the temperature of the liquid reaches its boiling point, which is the temperature at which the vapor pressure of the …
Burning and combustion Burning and combustion both refer to the process of a substance reacting with oxygen to produce heat and light. However, the terms are often used in slightly different contexts. Burning is a more general term that can refer to any chemical reaction that produces heat and light, not necessarily involving oxygen. For …
Facts: 1. Albert Einstein was born in Ulm, Germany, on March 14, 1879. 2.His parents were Hermann Einstein and Pauline Koch, and he had one younger sister named Maja. 3.Einstein’s family was Jewish, and he attended a Jewish elementary school in Munich. 4.Einstein was a slow learner as a child, and he did not speak …
Albert Einstein – Facts, Theories and Inventions Read More »
