Overview of innovation and causes of prosperity and stability during the Song Dynasty (both Northern and Southern Song Dynasties). First movable type block printing, government sanctioned paper money, gunpowder, etc.
Three Punic Wars between Rome and Carthage mark the end of the Carthaginian (Punic) Empire and leave the Roman Republic dominant in the Mediterranean.
Put as Insurance. Created by Sal Khan.
The concept of put-call parity is that puts and calls are complementary in pricing, and if they are not, opportunities for arbitrage exist. Explore the concepts of put-call parity in this video. Created by Sal Khan.
When there is not put-call parity, there is an arbitrage opportunity. In the second of two videos on arbitrage and put-call parity, we explore how this works. Created by Sal Khan.
Put-Call Parity Arbitrage II. Created by Sal Khan.
The put-call parity formula for American options is considerably more complicated than for European options. In this video we explore what the difference in how these options can be exercise complicates this concept. Created by Sal Khan.
A put payoff diagram is a way of visualizing the value of a put option at expiration based on the value of the underlying stock. Learn how to create and interpret put payoff diagrams in this video. Created by Sal Khan.
Put vs. Short and Leverage. Created by Sal Khan.
Put Writer Payoff Diagrams. Created by Sal Khan.
Overview of quantitative easing. Created by Sal Khan.
Does increasing the money supply impact the price level? Learn about the quantity theory of money in this video.
Quasar Correction. Created by Sal Khan.
Quasars. Created by Sal Khan.
Free body diagram for two masses connected by string-pulley system.
Acceleration of two masses connected by string-pulley system.
Impact of adding a third mass to our string-pulley system.
Testing energy consumption in a lightbulb.
Testing if a bulb is nonohmic.
Graphing energy versus position for a block accelerated by a spring and stopped by friction.