Fine-Structure Constant: Nature’s Mysterious Number
The fine-structure constant, often denoted by the Greek letter α (alpha), is a dimensionless constant that measures the strength of
Coulomb Force: The Electric Interaction Between Charges
The Coulomb force is the fundamental electric force that acts between two charged particles. It explains how charged objects attract
Neutrinos: The Ghost Particles of the Universe
Neutrinos are incredibly light, nearly massless subatomic particles that interact so weakly with matter that trillions of them pass through
The Speed of Light: Nature’s Ultimate Speed Limit
The speed of light in a vacuum, approximately 299,792 kilometers per second (km/s) or about 186,282 miles per second, is
String Theory: The Universe Woven from Tiny Strings
String theory is a theoretical framework in physics that proposes that the most fundamental building blocks of the universe are
The Schrödinger Equation: Governing Quantum Evolution
The Schrödinger equation is a fundamental equation in quantum mechanics that describes how the quantum state of a physical system
Black Holes: The Inescapable Giants of Spacetime
A black hole is a region of spacetime where gravity is so strong that nothing — not even light —
The Equivalence Principle: Gravity and Inertia as One
The equivalence principle is a fundamental concept in Einstein’s theory of general relativity, stating that gravitational mass and inertial mass
The Photoelectric Effect: Proof of Light’s Quantum Nature
The photoelectric effect is a phenomenon in which electrons are ejected from a metal surface when light shines on it.
Electromagnetic Waves: Perpendicular Electric and Magnetic Fields
Electromagnetic (EM) waves are a form of energy that travels through space as a combination of oscillating electric and magnetic