Brand New Key - Briley the One Girl Band

Hey Vsauce. Michael here. In 1924, psychologist Carney Landis drew lines on people’s faces and then photographed them in various scenarios to study facial expressions. But he didn’t use actors, and he didn’t tell the participants to pretend to feel emoti…

Foreign [Music] I’m Hodge Tiger, one of the Group Partners at Y Combinator. Today, I’m going to talk about whether you should start a startup. Because YC invests in startups so early, I’ve spent a lot of time with people who aren’t yet sure if they should…

Hi, I’m Dave from Khan Academy, and I want to show you how you can preview and make assignments from right within the Teacher Dashboard. So let’s take a look at how the Content tab works. From your Teacher homepage, click into a class, and you’ll see th…

What I want to do in this video is get some practice writing Series in Sigma notation, and I have a series in front of us right over here. We have seven plus nine plus eleven, and we keep on adding all the way up to four hundred five. So first, let’s jus…

So here I’m going to talk about the Lan laian, and the lassan is a certain operator in the same way that the Divergence, or the gradient, or the curl, or even just the derivative are operators—the things that take in some kind of function and give you ano…

In this video, we’re going to be talking about pathogens and how an environment might help or hurt the spread of a pathogen. So first of all, let’s make sure we know what a pathogen is. “Patho” comes from Greek “pathos,” which is referring to disease. “Ge…