Understanding how channel proteins and carrier proteins can facilitate diffusion across a cell membrane (passive transport).
In this video, learn how to apply the analysis of factor markets to a sample problem.
Price changes the quantity supplied, but what might cause supply to increase even if price hasn't changed? In this video, we explore the determinants of supply: those factors that cause an entire supply curve to shift. Created by Sal Khan.
During Reconstruction, three new amendments to the Constitution redefined freedom, citizenship, and democracy in the United States. But how much really changed? In this video, Kim examines continuity and change over time in the lives of African Americans in the South before and after Reconstruction.
Difference between Historical Cost and Fair Value Accounting. Created by Sal Khan.
The Roman Empire became less stable over the course of the Third to Fifth centuries CE. Historians point to internal divisions as well as repeated invasions from tribes such as the Huns and the Visigoths as reasons why the Empire fell. The fall of the Western Roman Empire occurred in 476 CE.
How a current can be induced in a loop of wire by a change in magnetic flux.
Example calculating induced current based on change in flux.
How Faraday's Law is used to generate electricity in turbines.
The first fascist regime was established by Benito Mussolini in Italy in 1925. The word fascism comes from "fasci ," an Italian term for "bundle of sticks" that was a symbol for strength in unity. Fascists believe in one-party, totalitarian control of a nation and its economy. Fascist regimes value nationalism and militarization and frequently build nationalist fervor around a concept of shared racial or ethnic superiority. Mussolini's Fascist regime of the 1920s inspired Adolf Hitler's regime in Germany. Created by Sal Khan.
Analysis of the federal reserve balance sheet as of Feb 2007. Created by Sal Khan.
Federal and state powers and the 10th and 14th amendments.
Federalism in the United States. Exclusive and concurrent federal and state powers.
Part 2 of a close reading of excerpts of Federalist No. 10 where Madison makes the case that the type of large republic constructed by the Constitution of 1787 is favorable to any other form.
Fed Open Market Operations. Created by Sal Khan.
Feedback is the design technique where a part of the amplifier output "feeds back" to the input of the amplifier. The overall effect creates a very stable gain determined by resistor ratios. Created by Willy McAllister.
This art history video discussion examines Lyonel Feininger's "Cathedral for Program of the State Bauhaus in Weimar", woodcut, 1919 (MoMA).
A quick outline of how & why it works. Created by Brit Cruise.
Introduction to a key result in elementary number theory using a visualization with beads. Created by Brit Cruise.
How haploid gametes (sperm and egg cells) combine to form a diploid zygote with two sets of chromosomes. Created by Sal Khan.