Physics Explained
Understanding Physics, Simply Explained
Explore the fascinating world of physics, from everyday phenomena to the mysteries of the universe.
Featured Categories
Classical Mechanics
Understanding motion, forces, and the fundamental laws that govern how objects move
Electromagnetism
Understanding electricity, magnetism, and electromagnetic waves
Everyday Physics
Understanding the physics behind everyday phenomena and common questions
Modern Physics
Exploring relativity, quantum mechanics, and the fundamental nature of matter and energy
Optics
Understanding light, vision, and optical phenomena
Thermodynamics & Statistical Physics
Understanding heat, temperature, energy, and the behavior of systems with many particles
Featured Topics
How do mirrors create reflections?
Mirrors create reflections by having smooth, polished surfaces that bounce light back. When light hits a mirror, it reflects at the same angle it arrived (angle of incidence equals angle of reflection), creating clear, organized reflections that form images.
Read more →Why do objects appear smaller in the distance?
Objects appear smaller in the distance due to perspective—the visual angle they subtend decreases with distance. As objects move farther away, they occupy a smaller angle in our field of view, making them appear smaller. This is a geometric effect of how light rays from distant objects reach our eyes.
Read more →How does a thermometer work?
A thermometer works by using a substance that expands or contracts with temperature changes. Liquid thermometers use mercury or alcohol that expands in a narrow tube, with the height indicating temperature. Digital thermometers use temperature-sensitive electrical properties.
Read more →What is the standard model?
The Standard Model is the theory describing all known fundamental particles and three of the four fundamental forces (electromagnetic, weak, and strong). It organizes particles into quarks, leptons, and force carriers, and has been extremely successful in predicting and explaining particle behavior.
Read more →What is antimatter?
Antimatter is matter made of antiparticles—particles with opposite charge to normal particles. Antielectrons (positrons) have positive charge, antiprotons have negative charge. When matter and antimatter meet, they annihilate, converting to energy.
Read more →Why do we see colors in soap bubbles?
We see colors in soap bubbles because of thin-film interference. Light reflects from both the front and back surfaces of the bubble film, and these reflections interfere. Different wavelengths interfere constructively or destructively at different film thicknesses, creating the colorful patterns we see.
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