Home
›
Physics
August 03, 2017
Universal Formula for the Force of Gravity Explained
Gravity is the most mysterious force in nature, yet also the most powerful shaping the universe around us. Discover how humankind harnessed ever greater natural forces on its path of progress, and learn the universal formula that describes gravitational attraction. From energy sources to the physics of falling objects, this exploration reveals why gravity holds a special place among the forces of nature.
July 27, 2017
Neutrino: The Ghost Particle Explained
Nicknamed the "ghost particle," the neutrino slips through matter almost undetected, yet it holds secrets that reshaped our understanding of physics. Discover how Wolfgang Pauli first predicted its existence in 1931 to save the law of energy conservation, and how scientists like Fermi, Reines, and Cowan later proved it real. Explore its tiny mass, neutral charge, and why this elusive elementary particle matters so much.
October 19, 2016
Jet Propulsion Examples: From Nature to Ancient Rockets
Long before Newton's cart demonstrated the principles of reactive motion, inventors and animals alike were already harnessing the power of jet propulsion. Discover how Heron of Alexandria built the first steam turbine, why Chinese rockets changed the course of history, and how sea creatures and everyday objects reveal the same laws of physics in action. Explore vivid examples that connect ancient engineering, natural phenomena, and modern spacecraft.
March 30, 2016
Newton's Cart: Second Law Lab with Pulley Explained
Discover how a simple wheeled experiment devised by Isaac Newton reveals the working principle behind reactive engines. Follow the setup with the test tube, alcohol flame, and boiling water to see how escaping steam propels the cart forward. A clear, hands-on illustration of Newton's laws in action for students and educators exploring propulsion.
March 03, 2016
Centrifugal vs Centripetal Force: Key Differences
Ever wondered what force snaps a spinning sling or keeps planets circling the Sun? This guide breaks down centrifugal and centripetal force, showing how Newton's laws of motion explain circular motion in everyday examples like the story of David and Goliath. Learn the real difference between these two forces and finally understand what happens when an object spins.
February 27, 2016
Newton's Third Law of Motion: Definition & Examples
Ever wondered why every push comes with a pushback? Newton's Third Law reveals the essential condition behind every force, showing that for each action there is always an equal and opposite reaction. Explore clear explanations and real-world examples that connect a falling apple to the Moon orbiting Earth and planets circling the Sun.
December 29, 2015
Friction and Heat: How Friction Produces Thermal Energy
Ever wondered why rubbing your hands together warms them up, or how meteors blaze across the night sky? This lesson explores the close link between friction and heat, with clear everyday examples that show how motion turns into thermal energy. Perfect for students looking to understand the physics behind sliding, rolling, and the warmth it all creates.
November 13, 2015
The Surprising Science of Why Ice Is So Slippery
Everyone knows ice is slippery, but few can actually explain why. Is it pressure melting the surface, or is friction between skate and ice creating a hidden layer of water? Explore the surprising physics behind slippery ice, including V. B. Weinberg's insights, and discover the answer that isn't as simple as it seems.
November 11, 2015
Converting Thermal Energy into Mechanical Energy
Ever wondered why rubbing your hands together warms them up, or how ancient people sparked fire from friction alone? This page breaks down how mechanical energy transforms into heat, using vivid everyday examples from striking a match to spinning machine tools that grow hot enough to need cooling. Discover the physics behind friction, energy loss, and even the fiery glow of meteors racing through the atmosphere.
November 08, 2015
How to Reduce Friction Force: Methods and Lubricants
Ever wondered why a simple whiff of valerian tincture in a laboratory could suddenly lower the friction between a steel plate and a block? This page explores the surprising ways volatile substances, oils, ether, and other lubricants reduce sliding friction, along with the key differences between sliding and rolling friction. A must-read for physics learners curious about the real science behind cutting down friction force.
November 04, 2015
Static, Sliding & Rolling Friction: Key Differences
Ever wondered why a heavy cart is so hard to push, yet rolls forward once you get it going? This lesson breaks down sliding and rolling friction, explaining what causes each force and why rolling friction is far weaker than its sliding counterpart. Discover clear examples and simple physics that reveal how everyday objects resist and glide across surfaces.
October 29, 2015
Forces That Resist Motion: Why Cars Have Top Speeds
Ever wondered why flooring the gas pedal can't push your car past a certain speed? Discover how air resistance, rolling friction, and internal engine losses conspire to cap every vehicle's top speed. Explore the physics behind resisting forces and learn why aerodynamic design matters more than raw horsepower.
↑
October 19, 2016
Jet Propulsion Examples: From Nature to Ancient Rockets
Long before Newton's cart demonstrated the principles of reactive motion, inventors and animals alike were already harnessing the power of jet propulsion. Discover how Heron of Alexandria built the first steam turbine, why Chinese rockets changed the course of history, and how sea creatures and everyday objects reveal the same laws of physics in action. Explore vivid examples that connect ancient engineering, natural phenomena, and modern spacecraft.
November 11, 2015
Converting Thermal Energy into Mechanical Energy
Ever wondered why rubbing your hands together warms them up, or how ancient people sparked fire from friction alone? This page breaks down how mechanical energy transforms into heat, using vivid everyday examples from striking a match to spinning machine tools that grow hot enough to need cooling. Discover the physics behind friction, energy loss, and even the fiery glow of meteors racing through the atmosphere.
