TeachEngineering
Teach Engineering: The Energy of Light
For this introduction to light energy, students learn about reflection and refraction as they learn that light travels in wave form. Through hands-on activities, they see how prisms, magnifying glasses and polarized lenses work. They...
Georgia State University
Georgia State University: Hyper Physics: Refractive Telescopes
This site from Georgia State University Physics Department gives a discussion of the manner in which light is refracted by refractive telescopes. Discusses the Galielean telescope and the astronomical telescope.
Other
All About vision.com: Eye Conditions and Diseases
Many articles with consumer information about lenses, eyewear, eye problems, and unique eye conditions. Vast content and many links to off-site information.
Physics Aviary
Physics Aviary: Practice Problems: Image From Converging Lens 1
In this program you are to find the location and height of an image that is created by a converging lens.
Other
Ntnu Virtual Physics Lab: Thick Lens Java Applet
An interactive Java applet which allows the user to investigate the path of light through a lens shape object. The shape of the object, the index of refraction of the material, and the location of the incident rays can be altered.
University of Maryland
Optics Highlights: The Telescope
Part of an anecdotal history of optics and the study of light. Extremely thorough treatment of the invention of the telescope. Includes a short biographical sketch and discusses the work of Isaac Newton which focuses on his contribution...
Optical Society
Optical Society of America: Exploring the Science of Light: Classroom Activities
Experiments and activities for investigating the science of light, as well as in-depth explanations of some of the light principles.
Optical Society
Optical Society of America: Optics for Kids: Make a Telescope
An activity for making a telescope using a cardboard tube and two lenses. Accompanied by an explanation of how the telescope works, and a link to an article about lenses.
Optical Society
Optical Society of America: Optics for Kids: Lens Activity
An investigation into how lenses behave. Students explore using convex and concave lenses in various ways and record their observations. They are then are directed to another site to try activities where they can manipulate virtual lenses.
Physics Classroom
The Physics Classroom: Refraction/ray Model of Light: Image Formation/detection
Students discover the four parts of the eye are the most instrumental in the task of producing images that are discernible by the brain.
Curated OER
Kids Health: Your Eyes
Take a look at this article to learn about the different parts of this amazing part of the body that's at work from the moment you wake up until you close them to go to sleep.
Khan Academy
Khan Academy: Hyperopia and Convex Lenses
This passage will test your knowledge on lenses.
Khan Academy
Khan Academy: Converging and Diverging Lenses in a Lab
This passage will test your knowledge on lenses.
Khan Academy
Khan Academy: Thin Lens Sign Conventions
Have you ever wondered why some people need glasses and others don't? It's because of the way light is focused by the lens in your eye. This lens, like magnifying glasses, eyeglasses, and contact lenses, is considered a thin lens.
Aetna Intelihealth
Aetna: Inteli Health: Vision Glossary
Definitions of many technical and anatomical terms related to vision and the eye.
University of Chicago
University of Chicago: Reflector and Refractor
From the Yerkes Observatory Virtual Tour web site. Compares and contrasts reflecting and refracting telescopes. A link from the page leads to a second page which explains why most modern research telescopes are reflecting telescopes.
York University
York University: The Lens
Great description of the part of the eye called the lens, as well as what it does and how.
Exploratorium
Exploratorium: Water Sphere Lens
A discussion of how to make a magnifying lens exhibit using a water-filled flask and a light bulb. Consists of assembly instructions and a "To do and notice" section. Great for a teacher demonstration or a student project.
Other
Sherman Visual Lab: Thin Lens
Under the title, "Thin Lens and The Thin-Lens Equation," this site provides an animation of an object responding to the changes of its distance to the lens.
Other
Southern Microscope Service's Home Page
A series of pages explaining how microscopes work, the parts of a microscopes, the techniques of using a microscope, and other useful information.
Sophia Learning
Sophia: Parts of the Microscope: Lesson 2
This lesson will illustrate the different parts that make up a microscope, and explain how it works. It is 2 of 4 in the series titled "Parts of the Microscope."
Sophia Learning
Sophia: Parts of the Microscope: Lesson 3
This lesson will illustrate the different parts that make up a microscope, and explain how it works. It is 3 of 4 in the series titled "Parts of the Microscope."