The Great Questions of Philosophy and Physics
Season 1
The Great Questions of Philosophy and Physics guides you through the concepts, theories, and speculations that underlie our understanding of reality. In 12 stimulating episodes, award-winning teacher and philosopher Steven Gimbel covers the fundamental ideas of modern physics, highlighting the role of philosophy in setting ground rules, interpreting the results, and posing new questions.
2021
12 episodes
PG (Parental Guidance Suggested)
Special Interest
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S1 E1 - Does Physics Make Philosophy Superfluous?
February 18, 2021
30min
PG (Parental Guidance Suggested)
Trace the growth of physics from philosophy, as questions about the nature of reality got rigorous answers starting in the Scientific Revolution. Then, see how the philosophy of physics was energized by a movement called logical positivism in the early 20th century in response to Einstein’s theory of relativity. Though logical positivism failed, it spurred new philosophical ideas and approaches.
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S1 E2 - Why Mathematics Works So Well with Physics
February 18, 2021
35min
PG (Parental Guidance Suggested)
Physics is a mathematical science. But why should manipulating numbers give insight into how the world works? This question was famously posed by physicist Eugene Wigner in his 1960 paper, “The Unreasonable Effectiveness of Mathematics in the Natural Sciences.” Explore proposed answers, including Max Tegmark’s assertion that the world is, in fact, a mathematical system.
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S1 E3 - Can Physics Explain Reality?
February 18, 2021
35min
PG (Parental Guidance Suggested)
If the point of physics is to explain reality, what counts as an explanation? Professor Gimbel goes deeper to probe what makes some explanations scientific and whether physics actually explains anything. Along the way, he explores Bertrand Russell’s rejection of the notion of cause, Carl Hempel’s account of explanation, and Nancy Cartwright’s skepticism about scientific truth.
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S1 E4 - The Reality of Einstein’s Space
February 18, 2021
33min
PG (Parental Guidance Suggested)
What’s left when you take all the matter and energy out of space? Either something or nothing. Newton believed the former; his rival, Leibniz, believed the latter. Assess arguments for both views, and then see how Einstein was influenced by Leibniz’s relational picture of space to invent his special theory of relativity.
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S1 E5 - The Nature of Einstein’s Time
February 18, 2021
29min
PG (Parental Guidance Suggested)
Consider the weirdness of time: The laws of physics are time reversable, but we never see time running backwards. Theorists have proposed that the direction of time is connected to the order of the early universe and even that time is an illusion. See how Einstein deepened the mystery with his theory of relativity, which predicts time dilation and the surprising possibility of time travel.
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S1 E6 - The Beginning of Time
February 18, 2021
27min
PG (Parental Guidance Suggested)
Continue exploring time by winding back the clock. Was there a beginning to time? Einstein’s initial equations of general relativity predicted a dynamic universe, one that might have expanded from an initial moment. Einstein discarded this idea, but since then evidence has mounted for a “Big Bang.” Is it sensible to ask what caused the Big Bang and what happened before?
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S1 E7 - Are Atoms Real?
February 18, 2021
31min
PG (Parental Guidance Suggested)
Compare proof for the reality of atoms with evidence for the existence of Santa Claus. Both are problematic hypotheses! Trace the history of atomic theory and the philosophical resistance to it. End with Bas van Fraassen’s idea of “constructive empiricism,” which holds that successful theories ought only to be empirically adequate since we can never know with certainty what is real.
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S1 E8 - Quantum States: Neither True nor False?
February 18, 2021
29min
PG (Parental Guidance Suggested)
Enter the quantum world, where traditional philosophical logic breaks down. First, explore the roots of quantum theory and how scientists gradually uncovered its surpassing strangeness. Clear up the meaning of the Heisenberg uncertainty principle, which is a metaphysical claim, not an epistemological one. Finally, delve into John von Neumann’s revolutionary quantum logic.
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S1 E9 - Waves, Particles, and Quantum Entanglement
February 18, 2021
30min
PG (Parental Guidance Suggested)
Quantum mechanics rests on an apparent category mistake: Light can’t be both a wave and a particle, yet that’s what theory and experiments show. Analyze this puzzle from the realist and empiricist points of view. Then explore philosopher Arthur Fine’s “natural ontological attitude,” which reconciles realism and antirealism by demonstrating how they rely on different conceptions of truth.
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S1 E10 - Wanted Dead and Alive: Schrödinger’s Cat
February 18, 2021
29min
PG (Parental Guidance Suggested)
The most famous paradox of quantum theory is the thought experiment showing that a cat under certain experimental conditions must be both dead and alive. Explore four proposed solutions to this conundrum, known as the measurement problem: the hidden-variable view, the Copenhagen interpretation, the idea that the human mind “collapses” a quantum state, and the many-worlds interpretation.
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S1 E11 - The Dream of Grand Unification
February 18, 2021
31min
PG (Parental Guidance Suggested)
After the dust settled from the quantum revolution, physics was left with two fundamental theories: the standard model of particle physics for quantum phenomena and general relativity for gravitational interactions. Follow the quest for a grand unified theory that incorporates both. Armed with Karl Popper’s demarcation criteria, see how unifying ideas such as string theory fall short.
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S1 E12 - The Physics of God
February 18, 2021
32min
PG (Parental Guidance Suggested)
The laws of physics have been invoked on both sides of the debate over the existence of God. Professor Gimbel closes the series by tracing the history of this dispute, from Newton’s belief in a Creator to today’s discussion of the “fine-tuning” of nature’s constants and whether God is responsible. Such big questions in physics inevitably bring us back to the roots of physics: philosophy.
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