physics

Ohm discovered the relationship between voltage, current, and resistance. His law is fundamental to electrical engineering and appears in every circuit.

Electricity was a scientific curiosity in 1800. Within 100 years it was lighting cities and running factories.

A single GE90-115B turbofan is rated at 115,300 pounds-force of thrust. The physics behind it is a short chain of ideas: squeeze air, burn fuel in it, and let the hot gas do work.

From Pythagoras to Bach to electronic music, mathematics has always been running under music. Here's how ratios, waves, and arithmetic create harmony and rhythm.

Ampère discovered that electric currents create magnetic fields and developed the mathematical framework of electromagnetism. His laws still govern electrical engineering.

Proxima Centauri is 4.24 light-years away. With our fastest spacecraft today, the journey would take 70,000 years. Here's what it would actually take to get there faster.

Atoms are not all stable. Some nuclei spontaneously transform, emitting radiation as they go. The process powers nuclear medicine, reveals the age of ancient artifacts, and tells us the age of the Earth itself.

Four laws govern how energy moves, transforms, and degrades, from the steam engine to every living cell. Thermodynamics explains why engines have limits and why time has a direction.

A strand of glass thinner than a human hair can carry more information than all the copper wires ever made. Here's the physics behind it.

Your phone's navigation relies on corrections from both special and general relativity. Without Einstein, GPS would be off by kilometers within hours.

MRI sees inside your body without radiation by making hydrogen atoms in your tissues sing at a specific radio frequency.

A photon from the sun hits silicon, kicks out an electron, and creates electricity. This simple fact is reshaping civilization.