PBS
Light Absorption: Effects of Light | UNC-TV Science
Beat the summer heat by exploring the properties of color. Scientists view a video explaining the relationship between light absorption and energy transfer using variables including intensity, time, and wavelength. A multiple-choice...
PBS
Reflection and Refraction | UNC-TV Science
Uncover the exciting interactions of light energy and matter ranging from color to optical illusions. Participants explore color using red and green apples, differences between reflection and refraction, and descriptions of related...
Crash Course
Geometric Optics: Crash Course Physics #38
Light can be a mysterious phenomenon. Take away some of the mystery with an intriguing video lesson. The 38th lesson of the Crash Course physics series studies the movement of light waves. Topics include refraction and reflection as well...
Crash Course
Telescopes
According to the video, astronomy is like a jigsaw puzzle with an infinite number of pieces. The video explains the history and invention of telescopes, how they work, refraction versus reflection, and the changing technology. It...
Bozeman Science
Waves
Calculating frequency is so easy it Hertz! The video begins by describing transverse and longitudinal waves, and then it explores their properties and applications. Finally, it applies this to the formulaic relationships between wave...
SciShow
From Kepler to Webb: The History of the Telescope
The Hubble Telescope is approximately the size of a school bus, but the new Webb Telescope will be approximately the size of a tennis court. The history of the telescope, from its invention to to what it takes to make one, is the focus...
DoodleScience
Total Internal Reflection
Demonstrate fiber optics and specifically how total internal reflection works. It covers the relationship between the angle of incidence and the critical angle, refraction, and the role of density. It concludes with other applications...
DoodleScience
Diverging Lenses
2016 was the first time viewers could watch the Olympics in virtual reality. The video discusses how diverging lenses are used to create virtual images using refracting light. It also explains how to use a ray diagram and identify the...
DoodleScience
Converging Lenses
Did you know your eyes can only focus to within about six inches in front of them? The video explains converging lenses, refraction, images, the difference in converging and diverging, focus, focal length, and ray diagrams.
DoodleScience
Ultrasound
Here is a resource that explains how ultrasound works by using sound waves. It examines such applications as its use in the detection of kidney stones and in prenatal care. A practice problem is also included.
DoodleScience
Refraction and Refractive Index
This video covers refraction and the refractive index, which is based on density. It also explains why the angle of refraction is different than the angle of incidence and how this knowledge is helpful when it comes to lenses.
DoodleScience
Refraction and Diffraction
Holding a conversation underwater has its challenges. Sound and light waves can travel in different mediums, but it affects their waves. The video explains the process of refraction and diffraction and how it relates to energy waves.
TED-Ed
How Do Glasses Help Us See?
How do glasses help us see? Glasses correct refractive errors. A simple answer for a complex process that is detailed in a short video.
Steve Spangler Science
Disappearing Money - Sick Science! #049
Bring a little magic into the classroom. Fill a cup with water, place a plate underneath it, and watch a coin disappear. This is a great way to kick off a discussion involving the behavior of light and the concepts of reflection and...
Curated OER
Refraction
Refraction is the bending of light, changing its path. This phenomenon is caused by a change in the speed of the light waves. This video provides visual demonstrations of refraction through various media. It concludes by mentioning how...
Curated OER
Disappearing Money
Bring a little magic into the classroom. Fill a cup with water, place a plate underneath it, and watch a coin disappear. This is a great way to kick off a discussion involving the behavior of light and the concepts of reflection and...
Curated OER
Physics 11.2.1a - Refraction
All of the classic means of revealing refraction are employed in this interactive whiteboard presentation: a straw in a cup of water and light rays traveling through a piece of glass. On the drawing of light passing through glass, Derek...
Curated OER
Physics 11.2.3a - Snell's Law
Snell measured the angles of refraction through water and developed a formula for calculating a refraction. In this educational video clip, the teacher explains how it came about. It is most applicable to your high school physics class.
Curated OER
Physics - Spherical and Parabolic Mirrors
Intended for learners with a solid understanding of algebra, physics, and scientific language, this clip describes the differences and functions of spherical and parabolic mirrors. This clip is not so much about telescopes but about...
Massachusetts Institute of Technology
Mit: Science Out Loud: Creating Invisibility Cloaks
It's not just movie magic - invisibility cloaks could be feasible, just by manipulating the crazy ways that light bounces, bends, and mixes! Prashanth and Maria take you behind the physics of light and how an invisible cloak could...
Bozeman Science
Bozeman Science: Physics: 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
Crash Course Physics #38: Geometric Optics
This video episode of Crash Course Physics focuses on 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...
Khan Academy
Khan Academy: Waves and Optics: Convex Lens Examples
Convex lens seem confusing to you? This video lecture gives you some examples of ray diagrams for objects placed at different distances from a convex lens. [9:35]
Khan Academy
Khan Academy: Waves and Optics: Snell's Law Example 2
An exploration of Snell's Law using the example of a beam of light being refracted through a pool of water. [11:25]