Bozeman Science
Ray Diagrams - Lenses
In this video Paul Andersen explains how ray diagrams for lenses can be used to determine the size and location of a refracted image. Images may be either real or virtual images. Ray diagrams for converging and diverging lenses are...
Crash Course
Geometric Optics: Crash Course Physics
LIGHT! Let's talk about it today. Sunlight, moonlight, torchlight, and flashlight. They all come from different places, but they’re the very same thing: light! It’s what makes it possible for us to see the world around us, so it’s worth...
SciShow
Choosing a Telescope: Bigger Isn't Always Better!
Before you take your relationship with space to a new level by getting a telescope, find out what you really need to make the most of your summer nights staring at the sky.
SciShow
How Do Polarized Sunglasses Work?
The useful glare-blocking properties of polarized sunglasses are well-known to just about anyone who goes outside. What isn't so well-known is how they reduce glare in the first place. That answer is deceptively complicated!
TED-Ed
TED-Ed: How do glasses help us see? - Andrew Bastawrous and Clare Gilbert
Today, glasses help millions of people with poor vision be able to see clearly. But how? Andrew Bastawrous and Clare Gilbert help unravel the answer by explaining refraction - the ability of a transparent medium, like glass, water, or...
Crash Course
Optical Instruments: Crash Course Physics
How do lenses work? How do they form images? Well, in order to understand how optics work, we have to understand the physics of light. In this episode of Crash Course Physics, Shini talks to us about optical instruments and how they make...
TED-Ed
TED-ED: The evolution of the human eye - Joshua Harvey
The human eye is an amazing mechanism, able to detect anywhere from a few photons to a few quadrillion, or switch focus from the screen in front of you to the distant horizon in a third of a second. How did these complex structures...
Crash Course
Ancient Egypt Crash Course World History
In which John covers the long, long history of ancient Egypt, including the Old, Middle and New Kingdoms, and even a couple of intermediate periods. Learn about mummies, pharaohs, pyramids and the Nile with John Green.
SciShow Kids
Don’t Be Afraid of Spiders!
A SciShow Kids viewer wants to know more about spiders so she’s not afraid of them anymore. And know what? They’re not scary! They’re awesome!
Curated Video
Ancient Egypt: Crash Course World History
In which John covers the long, long history of ancient Egypt, including the Old, Middle and New Kingdoms, and even a couple of intermediate periods. Learn about mummies, pharaohs, pyramids and the Nile with John Green.
Curated Video
AWS Certified Cloud Practitioner (CLF-C02) - Ultimate Exam Training - AWS Well Architected Framework Tool
New ReviewAn exploration of the AWS Well-Architected Tool, designed to assist in aligning cloud solutions with the six key pillars of the Well-Architected Framework, featuring a walkthrough of the tool's questionnaires, benefits like architecture...
Curated Video
Understanding Focal Length: Choosing the Right Lens for Your Photography Needs
New ReviewThis video provides an informative explanation of the concept of focal length in lenses. The instructor begins by clarifying the distinction between focal length and focal distance, emphasizing that focal length refers to the distance...
Curated Video
Mirrors and Lenses
New Review2 minute video describing convex and concave mirrors and lenses
Curated Video
Navigating Health Crazes: A Guide to Critical Thinking
New ReviewThis video explores the prevalence of health crazes in today's society and emphasizes the importance of applying critical thinking when evaluating their effectiveness. It encourages viewers to question the motives behind these trends,...
Curated Video
How to Pick a Photography Studio Kit
Howcast - Learn how to pick a photography studio kit from professional photographer Chris Ryan in this Howcast video.
Curated Video
How to Pick a Welding Helmet or Welding Hood
Howcast - Learn how to pick a welding helmet or welding hood from sculptor DeWitt Godfrey in this Howcast video.
Curated Video
How to Understand F-Stops on a Digital Camera
Howcast - Learn about F-stops from commercial photographer Dan Bracaglia in this digital photography lesson from Howcast.
Curated Video
6 Digital Camera Exposure Basics
Howcast - Learn six digital camera exposure basics from commercial photographer Dan Bracaglia in this digital photography lesson from Howcast.
Curated Video
What Household Items Should You Keep in Your Camera Bag?
Howcast - Learn what household items you should keep in your camera bag from commercial photographer Dan Bacaglia in this Howcast digital photography lesson.
Curated Video
4 Outdoor Digital Photography Tips
Howcast - Learn four outdoor photography tips from commercial photographer Dan Bracaglia in this video from Howcast.
Curated Video
How to Capture Action or Sports with a Digital Camera
Howcast - Learn how to capture action or sports with your digital camera from commercial photographer Dan Bracaglia in this photography lesson from Howcast.
Curated Video
6 Digital SLR Photography Tips (DSLR)
Howcast - Learn six digital SLR (DSLR) photography tips from commercial photographer Dan Bracaglia in this digital photography lesson from Howcast.
Curated Video
5 Tips about Telephoto Lenses on a Digital Camera
Howcast - Learn about telephoto lenses from commercial photographer Dan Bracaglia in this digital photography lesson from Howcast.
Curated Video
8 Aperture Tips for a Digital Camera
Howcast - Learn eight digital camera aperture tips from commercial photographer Dan Bracaglia in this digital photography lesson from Howcast.