Introduction to DNA cloning.
How DNA is copied (replication). How information in DNA can be used to make a protein.
DNA weaves together the tapestry of life on Earth. It mutates, which can lead to variation among organisms. Watch how natural selection relies on DNA to mold organisms to suit their environments.
The DOM (Document Object Model)
Now we add a damper to our spring.
Example questions analyzing data to justify claims in experiments.
In this video, David explains how Louis De Broglie got his Nobel Prize for the idea of matter having a wavelength.
Learn how to debug in your webpages on Khan Academy using console.log() and the Chrome Developer Tools.
How to debug a line of code in JavaScript.
Review how the decimal number system works before diving into the binary number system. The decimal number system and binary number system work the same way; the only difference is what each digit represents (0-9 versus 0/1). Created by Pamela Fox.
David defines the terms amplitude and period for simple harmonic motion and shows how to find them on a graph. Created by David SantoPietro.
Dehydration synthesis (condensation reaction) between sugar molecules. Monosaccharides, disaccharides, and polysaccharides. Formation of maltose from glucose monomers.
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.
Deriving formula for centripetal acceleration in terms of angular velocity. using linear speed formula.
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.