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16 days ago
Photo by Caroline Steel on October 20, 2026. May be an image of television, magazine and text.
Photo by Caroline Steel on October 20, 2026. May be an image of text.
Photo by Caroline Steel on October 20, 2026. May be an image of television, microphone, magazine and text.
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Posted On: October 20th 2026, 12:25 pm
What exactly is time? Why do general relativity and quantum mechanics treat it so differently? And why does it matter?

I had a great time exploring these questions with @jalkhalili at Wimbledon BookFest last night, discussing his new book, On Time.

Iโ€™d really recommend it: all the best bits of physics, without the equations. You get to have an existential crisis without showing your working.

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