We put some charge on a capacitor in an RC circuit and observe what happens to the voltage and current. This is called the natural response. Created by Willy McAllister.
An example solution of an RC step response, with real component values. Created by Willy McAllister.
An RC circuit responds to a step of voltage with a smooth transition between the starting and ending voltage. The RC step response is a fundamental behavior of all digital circuits. Created by Willy McAllister.
The RC step response is an exponential curve. We set up the circuit and create the differential equation we need to solve. We introduce the technique of Natural response + Forced response. Created by Willy McAllister.
We find the RC step response using the method of Natural + Forced response = Total response. Created by Willy McAllister.
Overview of the RGB color model.
Introduction to why we would need RSA. Created by Brit Cruise.
Setting up a trapdoor one-way function. Created by Brit Cruise.
RSA Encryption (step 3). Created by Brit Cruise.
RSA worked example. Created by Brit Cruise.
When acceleration could involve a change in direction and not speed. Created by Sal Khan.
Predicting which spinning disc has a larger radius from angular velocity and the linear velocity of a point on the edge.
Radius of Observable Universe. Created by Sal Khan.
(Correction) Radius of Observable Universe. Created by Sal Khan.
How could random numbers speed up a decision algorithm? Created by Brit Cruise.
Sal's random predictions for the year 2060. Created by Sal Khan.
Introduction to random primality tests & how they will work (warm up). Created by Brit Cruise.
Overview of reaction coupling to create glucose-6-phosphate.
Pamela shows the difference between unreadable code and readable code. Go for the latter!
Oxidation and reduction reactions power your phone and make it possible for your body to use the oxygen you inhale. We will learn about oxidation states (numbers), oxidation-reduction (redox) reactions, galvanic/voltaic cells, electrolytic cells, cell potentials, and how electrochemistry is related to thermodynamics and equilibrium.