18 | Clifford Johnson on What's So Great About Superstring Theory

18 | Clifford Johnson on What's So Great About Superstring Theory

String theory is a speculative and highly technical proposal for uniting the known forces of nature, including gravity, under a single quantum-mechanical framework. This doesn't seem like a recipe for creating a lightning rod of controversy, but somehow string theory has become just that. To get to the bottom of why anyone (indeed, a substantial majority of experts in the field) would think that replacing particles with little loops of string was a promising way forward for theoretical physics, I spoke with expert string theorist Clifford Johnson. We talk about the road string theory has taken from a tentative proposal dealing with the strong interactions, through a number of revolutions, to the point it's at today. Also, where all those extra dimensions might have gone. At the end we touch on Clifford's latest project, a graphic novel that he wrote and illustrated about how science is done. Clifford Johnson is a Professor of Physics at the University of Southern California. He received his Ph.D. in mathematics and physics from the University of Southampton. His research area is theoretical physics, focusing on string theory and quantum field theory. He was awarded the Maxwell Medal from the Institute of Physics. Johnson is the author of the technical monograph D-Branes, as well as the graphic novel The Dialogues. Home page Wikipedia page Publications A talk on The Dialogues Asymptotia blog Twitter

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45 | Leonard Susskind on Quantum Information, Quantum Gravity, and Holography

45 | Leonard Susskind on Quantum Information, Quantum Gravity, and Holography

For decades now physicists have been struggling to reconcile two great ideas from a century ago: general relativity and quantum mechanics. We don't yet know the final answer, but the journey has taken...

6 Touko 20191h 13min

44 | Antonio Damasio on Feelings, Thoughts, and the Evolution of Humanity

44 | Antonio Damasio on Feelings, Thoughts, and the Evolution of Humanity

When we talk about the mind, we are constantly talking about consciousness and cognition. Antonio Damasio wants us to talk about our feelings. But it's not in an effort to be more touchy-feely; Damasi...

29 Huhti 20191h 12min

43 | Matthew Luczy on the Pleasures of Wine

43 | Matthew Luczy on the Pleasures of Wine

Some people never drink wine; for others, it's an indispensable part of an enjoyable meal. Whatever your personal feelings might be, wine seems to exhibit a degree of complexity and nuance that can be...

22 Huhti 20191h 46min

42 | Natalya Bailey on Navigating Earth Orbit and Beyond

42 | Natalya Bailey on Navigating Earth Orbit and Beyond

The space age officially began in 1957 with the launch of the Sputnik 1 satellite. But recent years have seen the beginning of a boom in the number of objects orbiting Earth, as satellite tracking and...

15 Huhti 201959min

41 | Steven Strogatz on Synchronization, Networks, and the Emergence of Complex Behavior

41 | Steven Strogatz on Synchronization, Networks, and the Emergence of Complex Behavior

One of the most important insights in the history of science is the fact that complex behavior can arise from the undirected movements of small, simple systems. Despite the fact that we know this, we'...

8 Huhti 20191h 14min

40 | Adrienne Mayor on Gods and Robots in Ancient Mythology

40 | Adrienne Mayor on Gods and Robots in Ancient Mythology

The modern world is full of technology, and also with anxiety about technology. We worry about robot uprisings and artificial intelligence taking over, and we contemplate what it would mean for a comp...

1 Huhti 20191h 3min

39 | Malcolm MacIver on Sensing, Consciousness, and Imagination

39 | Malcolm MacIver on Sensing, Consciousness, and Imagination

Consciousness has many aspects, from experience to wakefulness to self-awareness. One aspect is imagination: our minds can conjure up multiple hypothetical futures to help us decide which choices we s...

25 Maalis 20191h 19min

38 | Alan Lightman on Transcendence, Science, and a Naturalist's Sense of Meaning

38 | Alan Lightman on Transcendence, Science, and a Naturalist's Sense of Meaning

Let's say, for sake of argument, that you don't believe in God or the supernatural. Is there still a place for talking about transcendence, the sacred, and meaning in life? Some of the above, but not ...

18 Maalis 20191h 16min

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