Khan Academy: 2757 products
Khan Academy is an organization on a mission. We're a not-for-profit with the goal of changing education for the better by providing a free world-class education for anyone anywhere.
All of the site's resources are available to anyone. It doesn't matter if you are a student, teacher, home-schooler, principal, adult returning to the classroom after 20 years, or a friendly alien just trying to get …
check_box_outline_blank
Health and medicine: Centriacinar emphysema vs panacinar emphysema
Centriacinar and panacinar are different classifications of disease emphysema based on the location of the damaged lung tissue. Learn how i…
VideoFree5 minutes
check_box_outline_blank
Health and medicine: Bottom-up vs. top-down processing
Health and medicine The medical world can be a confusing place. Patients, their families, and even students entering health fields might fe…
VideoFree4 minutes
check_box_outline_blank
Health and medicine: Blood cell lineages
Health and medicine The medical world can be a confusing place. Patients, their families, and even students entering health fields might fe…
VideoFree8 minutes
check_box_outline_blank
Electrical engineering: Finding Fourier coefficients for square wave
Finding Fourier coefficients for a square wave Electrical engineering Learn about electricity, circuit theory, and introductory electronics…
VideoFree11 minutes
check_box_outline_blank
Health and medicine: Getting a new heart
Think through the result of getting a new heart, and how the heart can still maintain homeostasis when the nerves are no longer around. Ris…
VideoFree7 minutes
check_box_outline_blank
Electrical engineering: What is inside an alarm clock radio?
In this video we explore what is inside an alarm clock, how it is made, and how it works. Electrical engineering Learn about electricity, c…
VideoFree14 minutes
check_box_outline_blank
Health and medicine: What is preload?
Some say Preload = End-Diastolic Pressure, others say Preload = End-Diastolic Volume, so which one is it? Watch and find out! Rishi is a pe…
VideoFree14 minutes
check_box_outline_blank
Health and medicine: People and plants
Learn more about photosynthesis and cellular respiration through a classic story: Jack and the Beanstalk. Rishi is a pediatric infectious d…
VideoFree10 minutes
check_box_outline_blank
Electrical engineering: Connect the LEDs to an on/off switch
Electrical engineering Learn about electricity, circuit theory, and introductory electronics. We also have sections that let you get down a…
VideoFree5 minutes
check_box_outline_blank
Health and medicine: What is arthritis?
Visit us (http://www.khanacademy.org/science/healthcare-and-medicine) for health and medicine content or (http://www.khanacademy.org/test-p…
VideoFree9 minutes
check_box_outline_blank
Health and medicine: Molarity, molality, osmolarity, osmolality, and tonicity - what's the difference?
See how each of these terms tells us something different about a solution. Rishi is a pediatric infectious disease physician and works at K…
VideoFree4 minutes
check_box_outline_blank
Electrical engineering: Motor controller connections
Electrical engineering Learn about electricity, circuit theory, and introductory electronics. We also have sections that let you get down a…
VideoFree2 minutes
check_box_outline_blank
Electrical engineering: What is inside a digital camera? (2 of 2)
In this video we compare different revisions of the same digital camera. Electrical engineering Learn about electricity, circuit theory, an…
VideoFree3 minutes
check_box_outline_blank
Electrical engineering: LED eyes
In this video we create and wire Bit-zee's tri-color LED eyes Electrical engineering Learn about electricity, circuit theory, and introduct…
VideoFree8 minutes
check_box_outline_blank
Class 11 Physics (India): Work from expansion
How a system can do work by expanding Class 11 Physics (India) Let's learn, practice, and master topics of class 11 physics (NCERT) startin…
VideoFree13 minutes