Quantum theory explains the microworld. General relativity, discovered by Einstein, explains gravity and the structure of the universe. The problem is that the two are not...
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6 videos
51:57
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Particles at two places at the same time—superposition. Particles communicating instantly with no respect to distance—entanglement. How to make sense of such weirdness?...
8 videos
1:21:37
The universe began as a simple hot bath of particles and forces. How then the vast diversity of things we find on earth today? Much depends on the principles of...
1:10:11
Dig down to the deepest level of reality, the smallest things that exist, the building blocks of everything else. What do we find? What’s there at the very bottom?...
11 videos
1:49:38
Mathematics is like nothing else. The truths of math seem to be unrelated to anything else—independent of human beings, independent of the universe. The sum of 2 + 3 = 5...
7 videos
47:10
Mathematics describes the real world of atoms and acorns, stars and stairs, with remarkable precision. So is mathematics invented by humans just like chisels and hammers and...
9 videos
1:34:28
We think we understand the physical world but we do not. For example, some features of the world are derived from others, which makes the latter more fundamental and the...
1:37:56
That the universe began seems astonishing. What brought it about? What forces were involved? How did the laws of nature generate the vast expanse of billions of galaxies of...
1:24:25
Why isn’t there nothing at all? Why is it not the case that there is no cosmos, no laws of nature, no consciousness, literally nothing at all? Scientists claim that the...
1:47
Quantum theory is very strange. No act is wholly sure. Everything works by probabilities, described by a wave function. But what is a wavefunction? One theory is that every...
5 videos
41:15
Time seems natural and absolute: the flow of moments, one following another, from the unknown past to the knife’s edge present to the unknowable future. But perhaps...
59:45
Could information be the stuff of which everything is made? Information seems so abstract, not a substance or a thing, so how could it be the building blocks of reality?...
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