Content about “
quantum mechanics

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hourglass with clock behind

What is time?

Everyone knows what time is. We can practically feel it ticking away, marching on in the same direction with horrifying regularity. Time has enslaved the Western world and become our most precious commodity. Turn it over to the physicists however, and it begins to morph, twist and even crumble away. So what is time exactly?
Podcast

What is time: The podcast

This podcast featuring Paul Davies, a theoretical physicist and cosmologist at Arizona State University and Director of BEYOND: Centre for Fundamental Concepts in Science, explores this difficult question and accompanies our What is time article.
Collection

From abstract nonsense to essential tool

Pure mathematics has a habit of eventually becoming useful. This series of articles explores an example: the rise of category theory in physics and the quest to build quantum computers.

Referenced articles
Article

New phases of matter: Abstract nonsense comes good

Category theory, which has previously been described as "abstract nonsense" turns out to be just the language we need to describe materials that may help us build quantum computers. Find out more in this article.

Article
Donuts

The Quantum Hall Effect: Protected by topology

The quantum Hall effect is a curious phenomenon: not only does it make effects from quantum physics visible in the macroscopic world, it also links physics to the pure mathematical area of topology. Find out more in this article.

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Happy birthday quantum mechanics!

To celebrate the 100th anniversary of quantum mechanics we bring together some of our introductory material on this marvellous theory. Expand your mind and enjoy!

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Article

The holographic principle

Over the last few decades physicists have been developing a curious idea. Perhaps the world we inhabit is a hologram, lacking a crucial feature of the world as we perceive it: the third dimension.