In Theory

Art for "What Are Feynman Diagrams?"
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What Are Feynman Diagrams?

The physicist Richard Feynman devised a system of line drawings that simplified calculations of particle interactions and helped rescue the field of quantum electrodynamics.


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Quanta Writers and Editors on Time, Life, Math and the Universe

November 28, 2018

On November 16, more than 200 readers joined writers and editors from Quanta Magazine for a panel discussion exploring the latest ideas in fundamental physics, biology and mathematics research.

Why Different Parts of a Coffee Mug Produce Different Pitches

November 27, 2018

The Stanford mathematician Tadashi Tokieda demonstrates one of his physics “toys”: the curious higher and lower notes you hear when tapping a coffee mug with a spoon.

Albert Einstein, Holograms and Quantum Gravity

November 14, 2018

How does gravity work in the quantum regime? A holographic duality from string theory offers a powerful tool for unraveling the mystery.

Valeria Pettorino on Learning About Dark Energy With the Euclid Satellite

November 13, 2018

Valeria Pettorino discusses the prospects of learning about dark energy with the Euclid satellite.

Mario Jurić on How Astronomy Is Changing

October 24, 2018

Mario Jurić explains how the nature of what it means to be an astronomer is changing.

Renee Reijo Pera on the Importance of Timing in Embryo Development

October 15, 2018

Stem cell researcher Renee Reijo Pera of Montana State University explains how the timing of developmental events in the early embryo can subtly affect health many years later.

Tomas Bohr on Performing the Double-Slit Experiment with Bouncing Droplets

October 8, 2018

Tomas Bohr explains the significance of the double-slit experiment in exposing the weirdness of the quantum world.

Rosaly Lopes on Volcanoes Throughout the Solar System

August 28, 2018

Rosaly Lopes explains why it’s worth exploring the huge variety of volcanoes on other worlds.

What Is Universality?

August 22, 2018

Scientists have discovered a mysterious pattern that somehow connects a bus system in Mexico and chicken eyes to quantum physics and number theory.