Satya Nadella on the journey to becoming Microsoft's CEO & reimagining technology's impact

Check this out! I have two clear, colorless solutions over here. Let’s pour them into each other. We pour the first one, and we pour the second one, and boom! We now get a white color solution. Here’s another example: again, two colorless solutions. We p…

That’s an excellent example of what’s called a crucial test, which is sort of the pinnacle of what science is all about. If we do a test and it doesn’t agree with a particular theory that we have, that’s problematic. But that doesn’t mean that it refutes …

[Music] So how long I think the audience might be interested to hear? Obviously, each one of the pitches is heavily edited down to the best parts. Yes, and it’s edited down for narrative, it’s edited down for conflict and collision of ideas. How much tim…

We’re told that polygon Q is a scaled copy of polygon P using a scale factor of one half. Polygon Q’s area is what fraction of polygon P’s area? Pause this video and see if you can figure that out. All right, my brain wants to make this a little bit tang…

So we have four different molecules here, and what I want you to think about is if you had a pure sample of each, which of those pure samples would have the highest boiling point, second highest, third highest, and fourth highest? Pause this video and try…

Have you ever figured something else, and you tried to explain it to someone else and they just didn’t believe you? This is the story about a man named Eugene Parker who, in 1958, wrote a paper about solar winds. NASA has named about 20 spacecraft after d…