Quantum physicist Artur Ekert (Oxford and NUS) describes how foundational issues of quantum theory were long ignored by the physics community.

Nobel Laureate David Politzer (Caltech) reflects upon the extent of Einstein's belief in the importance of the field concept in physics.

Celebrated polymath and mathematical physicist Freeman Dyson (IAS) describes why he is not a reductionist.

Duke neuroscientist Miguel Nicolelis describes how all human knowledge, even matters such as basic physics that seem completely independent of human experience, naturally depend on the nature of our brains.

Nobel Laureate Roger Penrose muses on how, despite being aware of the potential cosmological constant for many decades, most physicists were shocked when dark energy (commonly associated with such a constant) was observationally detected.

Cosmologist Rocky Kolb (Chicago) provides a brief background on the mystery of dark energy while explaining why the phenomenon is personally bothering him.

Stanford University psychologist Carol Dweck describes the difference between a fixed and a growth mindset and describes how her primary school years were shaped by a rigorously fixed-mindset teacher who lined all students up by IQ ranking.

Astrophysicist Scott Tremaine, Institute for Advanced Study, describes how our understanding of black holes has evolved from a time when Einstein didn't actually believe they existed to our present view that so-called "supermassive"...

Psychologist Carol Dweck (Stanford) defines the differences between a fixed mindset and a growth mindset, and describes the different aspects of potential associated with each. 

Quantum physicist Artur Ekert (Oxford and NUS) describes how Einstein's view of reality for quantum theory can be preserved in the many-worlds interpretation.

Celebrated scientific polymath Freeman Dyson, Institute for Advanced Study, describes how he is "more interested in the details than the big picture", and explains why he thinks that it is vital to not just search for overall equations,...

"Important People of India" examines the lives of important people in Indian history.

I thought I’d revisit one of my most watched videos, including my 10 More Things about WW2 and some previously unseen content.

“Scientific Theory vs. Scientific Law” will explain the difference between a scientific theory and a scientific law and the importance of the evolution of theory over time.

Gravitational lensing occurs when a huge amount of matter, like a star, galaxy, or cluster of galaxies, creates a powerful gravitational field around it, strong enough to bend the light coming from distant galaxies (behind...

Time dilation and Einstein’s theory of relativity go hand in hand. Albert Einstein is the most popular physicist, as he formulated the theory of relativity, which gave the Energy mass equivalence formula and is directly related to time...

On Feb 11, 2016 Scientists at LIGO announced that they had detected gravitational waves for the first time. In the press conference heard round the world, they showed the tell-tale waveforms indicating that huge event in which two black...

Okay, so we are about 150 million years into the lifetime of the universe. We've got a bunch of hydrogen and helium and not much else. But then gravity takes over, and boom! We've got stars! How, you ask? Well you'd better watch this!

The EPR paradox tries to prove that quantum mechanics is wrong.

The laws of physics get very, very weird in the realm of particles too small for the eye to see. Aboard the International Space Station, an experiment called the Cold Atom Laboratory (CAL) is exploring how the universe works .

We learned a bit about general relativity and the curvature of spacetime, both earlier in this series, as well as in the modern physics course. But let's talk a bit more about the astronomical observations that corroborate this theory....

What is entanglement really? And why is it that its a uniquely quantum phenomena? Bohmian mechanics stuff: In Bohmian mechanics, you still have superpositions, they just mean something very different. A Bohmian mech particle only has one...

Slow-motion fire experiment in microgravity done by dropping a box with a GoPro and candle inside. Physics Girl tests a candle in free-fall.

Can a close look at the universe give us solutions to problems too difficult even for a planet-sized computer to solve? Physicist Stephen Jordan considers this question and more in our latest video.