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time

Multimedia

Arrows of Time

May 4, 2020

The human mind has long grappled with the elusive nature of time: what it is, how to record it, how it regulates life, and whether it exists as a fundamental building block of the universe.

theoretical physics

Does Time Really Flow? New Clues Come From a Century-Old Approach to Math.

April 7, 2020

The laws of physics imply that the passage of time is an illusion. To avoid this conclusion, we might have to rethink the reality of infinitely precise numbers.

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?