An introduction to Parabolic Mirrors and Real Images. Created by Sal Khan.
Parallax in Observing Stars. Created by Sal Khan.
When the Great Powers sat down to iron out peace after World War I, they sought vengeance rather than a peaceful world. Created by Sal Khan.
When the Great Powers sat down to iron out peace after World War I, they sought vengeance rather than a peaceful world. Created by Sal Khan.
Parsec Definition. Created by Sal Khan.
In this video, we break down GDP into its components to better understand what's counted in GDP and what's not counted. Created by Sal Khan.
Comparing the patterns of Korea, Cuba and Vietnam. Created by Sal Khan.
Payday loans, which are sometimes called cash advances, are a form of unsecured short-term loans that are typically associated with very high interest rates. In this video we explore an example of a payday loan and use that to better understand the defining characteristics of a payday loan, and how they translate into an effective interest rate. Created by Sal Khan.
Pedigree for determining probability of exhibiting sex linked recessive trait.
An introduction to reading and analyzing pedigrees.
How the Chinese Central Bank could peg the Yuan to the dollar by printing Yuan and buying dollars (building up a dollar reserve). Created by Sal Khan.
An overview of the Peloponnesian War, including the Archidamian War, the Athenian attack on Syracuse, and the Decelean War.
How did Homo sapiens spread throughout the world?
Analysis of how well average inflation-adjusted after-tax income for the bottom 90% has tracked per capital GDP over the past 70 years. Created by Sal Khan.
Understanding per capita population growth and exponential growth.
What would happen if we have a percentage tax instead of a fixed dollar amount. Created by Sal Khan.
The most common forms of competition you learn about in microeconomics are perfect competition, monopolies, oligopoly, monopsony, and monopolistic competition. In this video we briefly describe the key features of each.
Examining the two extremes of elasticity, perfectly elastic and perfectly inelastic demand, can help us beter understand the intuition behind this measure. Created by Sal Khan.
Bankruptcy is the situation is when a person or other economic agent that owes more money than they will be able to pay back. In the United States, people who declare personal bankruptcy can do so under two provisions of the United States Bankruptcy Code, Chapter 7 or Chapter 13. Under the provisions of Chapter 13, some kinds of debt are restructured so that at least some of the debts are repaid. However under Chapter 7, some kind of debts are completely eliminated. In this video, we explore some of the differences between Chapter 7 or Chapter 13 bankruptcies, and some of the considerations when people consider these forms of bankruptcy need to think about. Created by Sal Khan.
How homologous chromosomes separate into two sets. Prophase I, metaphase I, anaphase I, and telophase I.