This is the second of two videos where Sal derives Bernoulli's equation. In the second half of the video Sal also begins an example problem where liquid exits a hole in a container. Created by Sal Khan.
The Bhakti (devotional love) movement gains momentum during Medieval India, highlighting an alternative path for Moksha/Liberation in Hinduism.
Crash Course is a fast, funny, irreverent look at history. In this episode, brothers John and Hank Green gives us their take on what makes Big History so darn important.. Created by Big History Project.
An introduction to the Big Bang.
Why does the Civil War matter? Kim discusses the importance of the Civil War and its effects on American society.
Businessman and philanthropist Bill Gates looks towards a future of sustainable energy and worldwide education. Created by Big History Project.
Rap song on the Bill of Rights, hosted by Smart Songs, an educational music group, creating songs about history, social studies, geography, and science---providing kids and teachers with content that makes learning fun. ABC News Los Angeles and The Boston Globe have described the group as the current version of Schoolhouse Rock.
The first ten amendments to the US Constitution are known as the "Bill of Rights." These amendments protect individual liberties and limit the power of the federal government.
Adafruit founder Limor Fried and program manager Federico Gomez Suarez explain how computers represent numbers, text, images, and sound using tiny electric signals.
Overview of biodiversity and extinction.
Cambrian explosion and biodiversity in the Phanerozoic Eon. Created by Sal Khan.
In this video segment adapted from NOVA scienceNOW, scientists discuss their attempts to grow human body parts in a jar.
Introduction to how water, carbon, nitrogen, and phosphorus are cycled through ecosystems.
Overview of biology, the study of life.
How can you tell if harmful bacteria are in your food or water that might make you sick? What you eat or drink can be contaminated with bacteria, viruses, parasites and toxins—pathogens that can be harmful or even fatal. Students learn which contaminants have the greatest health risks and how they enter the food supply. While food supply contaminants can be identified from cultures grown in labs, bioengineers are creating technologies to make the detection of contaminated food quicker, easier and more effective.
The emergence of America as a world power at the end of the 19th century and its acquisition of overseas territories.
Birth of Stars. Created by Sal Khan.
What cryptographic hash functions are and what properties are desired of them. Created by Zulfikar Ramzan.
A high-level explanation of digital signature schemes, which are a fundamental building block in many cryptographic protocols. Created by Zulfikar Ramzan.
An introduction to the mechanics of bitcoins and an overview of how transactions take place. Created by Zulfikar Ramzan.