Outline of the 1973 Allende Coup in Chile and Pinochet's Junta (this video under CC-BY-SA). Created by Sal Khan.
There are a number of European alliances that contributed to the broad scope of World War I. Prominent among these are the 1839 Treaty of London, which promised that the United Kingdom would protect Belgium's neutrality, the 1879 Dual Alliance treaty between Germany and Austria-Hungary to protect each other in the event of Russian attack, the 1892 Franco-Russian Military Convention that promised mutual assistance in the face of attack, the Triple Entente linking the United Kingdom and France (and later Italy), and the Triple Alliance linking Germany, Austria-Hungary, and Italy (at first). Created by Sal Khan.
Marginal Utility and maximization. Created by Sal Khan.
The basics of the alternative minimum tax. Created by Sal Khan.
How the Chinese buying of American debt leads to lower interest rates. Created by Sal Khan.
Core beliefs around the role of government in the US. Discussion of quotes by Ronald Reagan, FDR, Barack Obama and Milton Friedman.
Unlike European option, an American options can be exercised at any point before it expires. In this video we walk through the process of exercising an American call option. Created by Sal Khan.
In 1944, the Americans (and Allies) make even more progress in the Pacific. By the end of the year, they have taken positions that put them within bombing range of Japan.
In 1944, the Americans (and Allies) make even more progress in the Pacific. By the end of the year, they have taken positions that put them within bombing range of Japan.
Unlike European option, an American options can be exercised at any point before it expires. In this video we walk through the process of exercising an American put option. Created by Sal Khan.
Introduction to amortization. Created by Sal Khan.
Comparing depreciation and amortization. Created by Sal Khan.
An example of simplifying a seemingly complicated resistor circuit. Created by Willy McAllister.
Neurons (or nerve cells) are specialized cells that transmit and receive electrical signals in the body. Neurons are composed of three main parts: dendrites, a cell body, and an axon. Signals are received through the dendrites, travel to the cell body, and continue down the axon until they reach the synapse (the communication point between two neurons).
Ancient Egypt was an early example of a massive civilization spanning thousands of years. Sal explains this history in an overview.
Sal provides an overview of the Greco-Persian Wars and the Peloponnesian War.
Why is Mesopotamia considered the "cradle of civilization"? Sal explains the history of the early empires on the Tigris and Euphrates rivers.
High level overview from Ancient Egypt to Babylon with reference to stories from the Old Testament.
This overview of Ancient Persia explains the origins of the term "Persia" and Zoroastrianism; it also puts the Median, Achaemenid, Seleucid, Parthian, Sassanian dynasties in context.
Introducing angular momentum conceptually starting from linear momentum. Also covers some real-life examples. Created by Sal Khan.