In this video, walk through the solution to a question on the effect of tariffs from the 2012 AP(R) Microeconomics exam.
How Sanskrit is connected to Latin, English and other European languages.
How Sanskrit is connected to Latin, English and other European languages.
Overview of saturated fats, unsaturated fats, and trans fats.
Thinking about how large a cell is compared to viruses, proteins and simple molecules.
The nearest stars to our solar system, are located in the Alpha Centauri system. The two main stars are Alpha Centauri A and Alpha Centauri B, which are approximately 4.3 light years away from Earth. The third star in the Alpha Centauri system, Proxima Centauri, is actually the closest star to our solar system at approximately 4.2 lightyears away from Earth. Created by Sal Khan.
Scale of Earth and Sun. Created by Sal Khan.
Sal Khan describes the scale of our Solar System. Created by Sal Khan and NASA.
An introduction to the Scale of the Galaxy. Created by Sal Khan.
Attempting to comprehend the scale of the large. Created by Sal Khan.
From honey bees to cells, viruses, and atoms -- understanding the scale of the very small. Created by Sal Khan.
Dealing with scarcity is the basis of economics, but what does it mean to say that something is scarce? In this video, we explore the definition of scarcity in economics and how scarce resources are different from free resources.
This video discusses two closely related ideas in economics: scarcity and rivalry.
An introduction to the Schlieffen Plan and the First Battle of the Marne
How the scientific method is used to ask questions and test explanations.
An overview of how the Scientific Revolution catalyzed the Age of Enlightenment with a discussion of the degree to which Enlightenment ideas have or even can be fulfilled.
Why our closeness to the sun does not dictate the seasons. Created by Sal Khan.
Second Law of Thermodynamics and entropy: the entropy of the universe constantly increases.
Xerxes launches an attack on Greece by land and by sea, culminating in the Battle of Thermopylae.
S-waves and P-waves. Created by Sal Khan.