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time

universality

The Universal Law That Aims Time’s Arrow

August 1, 2019

A new look at a ubiquitous phenomenon has uncovered unexpected fractal behavior that could give us clues about the early universe and the arrow of time.

Art for "How the Brain Creates a Timeline of the Past"
neuroscience

How the Brain Creates a Timeline of the Past

February 12, 2019

The brain can’t directly encode the passage of time, but recent work hints at a workaround for putting timestamps on memories of events.

Multimedia

Quanta Writers and Editors Discuss Trends in Science and Math

November 21, 2018

On November 16, 2018, more than 200 readers joined writers and editors from Quanta Magazine for a wide-ranging panel discussion that examined the newest ideas in fundamental physics, biology and mathematics research.

Illustration for thermodynamics
Abstractions blog

Quantum Correlations Reverse Thermodynamic Arrow of Time

April 2, 2018

A recent experiment shows how quantum mechanics can make heat flow from a cold body to a hot one, an apparent (though not real) violation of the second law of thermodynamics.

Tim Maudlin
Q&A

A Defense of the Reality of Time

May 16, 2017

Time isn’t just another dimension, argues Tim Maudlin. To make his case, he’s had to reinvent geometry.

Illustration: black, numbered cats crossing a calendar. An extra "13" lurks in the background.
insights puzzle

Solution: ‘Friday the 13th’

April 26, 2017

There’s more than one good way to bring order to our unruly, seemingly arbitrary calendar.

Illustration: black, numbered cats crossing a calendar. An extra "13" lurks in the background.
insights puzzle

Is It Friday the 13th Again?

April 6, 2017

How our society defines years, months and weeks can seem frustratingly arbitrary. Can you bring order to our unruly calendar?

Warped time. Olena Shmahalo/Quanta Magazine
Abstractions blog

Quantum Gravity’s Time Problem

December 1, 2016

The effort to unify quantum mechanics and general relativity means reconciling totally different notions of time.

insights puzzle

Solution: ‘Time Through an LCD Display’

September 30, 2016

Insights about time’s arrow from a liquid crystal universe.