In this video we'll explore why regions in our scenes can go "out of focus." The region of our scene which is in focus call depth of field..
In this video David derives the mirror equation and magnification equation. Created by David SantoPietro.
Where does a buyer's demand curve come from? A rational buyer wants to get as much "bang per buck" from their consumption as possible. In economics, that's called marginal utility per dollar spent. When the price of a good decreases, the "bang per buck" on that good increases, which incentivizes consuming more of it. In this video, we derive the individual's demand curve for a good by tweaking the marginal utility per dollar spent. Created by Sal Khan.
Deriving formula for centripetal acceleration in terms of angular velocity. using linear speed formula.
Please join the Community College Consortium for Open Educational Resources (CCCOER) for a free and open webinar on Designing for Open Pedagogy. Open Pedagogy was first introduced by Lumen Learning co-founder David Wiley, as a way to capture how the use of OER can change educational practices. He relates that using OER in the same way as traditional textbooks is like driving an airplane down the road – it is missing out on what open can provide for student and teacher collaboration, engagement, and learning.
Showing how a change in government spending can lead to a new equilibrium. Created by Sal Khan.
A framework for thinking about how many detectable civilizations are out there. Created by Sal Khan.
Why do we even care about the Drake Equation. Thinking about the fraction of a planet's life when a civilization might be detectable. Created by Sal Khan.
Reconciling with the traditional Drake Equation. Created by Sal Khan.
Taking a shot at estimating the number of detectable civilizations. Created by Sal Khan.
More reasons why we haven't detected anything yet. Created by Sal Khan.
In this video from NOVA scienceNOW, learn how scientists detect potential signs of life on distant planets.
Walk through the logic of determining what kind of good has the most elastic demand in this video.
There are several factors that affect how elastic (or inelastic) the price elasticity of demand is, such as the availability of substitutes, the timeframe, the share of income, whether a good is a luxury vs. a necessity, and how narrowly the market is defined. We explore each of these in this video.
A module derived from the course “Intro to Mechatronics” at Lawrence Technological University discussing vehicle dynamics and controls. Included materials are a Power Point presentation and LabVIEW simulation file. This resource was developed through seed funding from the CAAT.
How British were the British colonies in North America in 1754? In this video, Kim discusses how the British colonies participated in political, social, cultural, and economic exchanges with Great Britain that encouraged both stronger bonds with Britain and resistance to Britain’s control.
From 1800 to 1848, the United States grew tremendously as a country, adding new territory and building national connections of business and transportation. But just twelve years later, the Civil War erupted! In this period, was the United States developing a unified national identity or a divided regional identity?
The Paleolithic and Neolithic eras of the Stone Age. Created by Sal Khan.
The Paleolithic and Neolithic eras of the Stone Age. Created by Sal Khan.
Alexander's Empire fragments into Seleucid Persia, Ptolemaic Egypt and Antigonid Macedonia (and other kingdoms) and gives rise to the Hellenistic Period.