Pangaea - the idea of Pangaea and some of the evidence behind it. Created by Sal Khan.
An introduction to parabolic mirrors, part 2. Created by Sal Khan.
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.
Passive transport and selective permeability. Passive transport through diffusion.
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.