Activity
Science Buddies

Science Buddies: Measuring the Speed of 'Light' With a Microwave Oven

For Students 9th - 10th
In this experiment, you will measure the speed of light using a microwave oven, some egg white, and a ruler. This short project proves to be an extremely interesting choice for a science lab, with pictures for illustration, and thorough...
Activity
Science Buddies

Science Buddies: Using a Laser to Measure the Speed of Light in Jello

For Students 9th - 10th
Think it takes expensive, sophisticated equipment to measure the speed of light? Think again. Outfit yourself with a simple handheld laser pointer, a protractor, and Jell-O, and you're ready to get started.
Handout
University of Colorado

University of Colorado: Physics 2000: Speed of Light

For Students 3rd - 8th
Using an interesting and intriguing format, this page discusses the question of "How does one measure the speed of light." Explanation focuses on Galileo's and Roemer's efforts to obtain a reasonable value. Also discusses Heinrich...
Handout
American Museum of Natural History

American Museum of Natural History: Ole Roemer and the Speed of Light

For Students 9th - 10th
This resource provides a concise overview of the speed of light and the Ole Roemer, the first man to measure it.
Unit Plan
University of New South Wales (Australia)

University of New South Wales: School of Physics: Physclips:the Nature of Light

For Students 9th - 10th
Physiclips thoroughly presents mechanics concepts about light with animations and film clips. Learn about light and color, wavelengths, speed of light, electromagnetic waves, Young's experiment, and photons.
Website
Other

Is the Speed of Light Constant?

For Students 9th - 10th
Using a question and answer format, this page discusses the question: "Is the Speed of Light Constant?" Discusses some of the history and experiments performed with light and the conclusions drawn from those findings.
Activity
PBS

Pbs Learning Media: Space Math Scale of the Solar System

For Students 6th - 8th
Practice Space Math! Math is the cornerstone of space travel. Familiarize yourself with all the ways math can help you study the solar system. Practice math problems in areas such as speed of light, the distance of planets to the sun,...
Handout
Mocomi & Anibrain Digital Technologies

Mocomi: What Is the Speed of Light?

For Students 3rd - 8th
How fast does light travel? How does its speed change when it travels through different media? Learn how scientists calculate the speed of light and some interesting facts.
Interactive
Other

Hstry Timeline: It's the Speed of Light, Dude!

For Students 9th - 10th
An interactive timeline that students can read, watch and listen to in order to understand the scientist who tried and succeeded in measuring the speed of light.
eBook
Libre Text

Libre Texts: Physics: Distortion of Space and Time

For Students 11th - 12th
If the speed of light remains a constant then time and distance change. Oh, it can be confusing! This text will help clear up the confusion. Discussion questions should serve to reinforce comprehension.and exercises
Website
University of Minnesota

University of Minnesota: Refraction of Light

For Students 9th - 10th
This page is a continuation of a tutorial about light reflection and refraction. It contains a diagram and suggestions on how to derive Snell's Law, which governs the refraction of light in a medium. For background to this derivation,...
Handout
Science Struck

Science Struck: How Does Light Travel Through Space and Other Media?

For Students 9th - 10th
A detailed discussion of the nature of light, how it can travel through a vacuum, and how the speed of light is affected when light travels through a medium.
Activity
NC State University

Pira Demonstration Catalog: Speed of Light

For Teachers 9th - 10th
A series of short descriptions of possible physics demonstrations for illustrating or measuring the speed of light. Suitable as a supplement to a teacher lesson plan or as an idea-generator for student projects.
Activity
PBS

Pbs: Nova: Time Travel: Think Like Einstein

For Students 9th - 10th
Addressed with questions about relative speed and the speed of light, students begin to "think like Einstein" while exploring the science behind the mystery of time travel.
eBook
Physics Classroom

The Physics Classroom: Refraction and Ray Model of Light: Direction of Bending

For Students 9th - 10th
In this interactive physics tutorial about refraction, students investigate the topic of the direction of bending of a light wave.
Unit Plan
PBS

Pbs Learning Media: Observing Refraction of Light

For Students 9th - 10th
This video segment adapted from Shedding Light on Science illustrates how light changes speed, and thus direction, in a process known as refraction. Includes background reading and discussion questions. [2:05]
Handout
Symmetry Magazine

Symmetry Magazine: Explain It in 60 Seconds: Cherenkov Light

For Students 9th - 10th
Cherenkov light is explained here as the light emitted when a charged particle travels through matter faster than light would be able to. This would be slower, however, than the maximum speed of light, which occurs in a vacuum. "Explain...
Article
Society for Science and the Public

Science News for Students: Breaking the Universal Speed Limit

For Students 9th - 10th
Describes research into whether neutrinos travel faster than the speed of light.
Unit Plan
CK-12 Foundation

Ck 12: Physical Science: Refraction of Light

For Students 4th - 5th
[Free Registration/Login may be required to access all resource tools.] Discusses refraction of light in matter and how light changes its speed and angle of refraction according to the type of medium it is travelling through.
Activity
American Museum of Natural History

American Museum of Natural History: O Logy: Train of Thought

For Students 3rd - 8th
Try out your ability to think like Einstein by working through two thought experiments that help explain how satellites stay in orbit and how the speed of light affects the universe.
Unit Plan
CK-12 Foundation

Ck 12: Light

For Students 9th - 10th
[Free Registration/Login may be required to access all resource tools.] In the following tutorial students will describe the relationships between speed, wavelength, and frequency of light. They will understand the photoelectric effect...
Unit Plan
BBC

Bbc: Gcse Bitesize: General Properties of Waves

For Students 9th - 10th
Light travels as waves. Waves can be described by their amplitude, wavelength and frequency. The speed of a wave can be calculated from its frequency and wavelength.
Unit Plan
Physics Classroom

The Physics Classroom: Optical Density and Light Speed

For Students 9th - 10th
A tutorial page explaining how the speed of light is dependent upon the optical density of the material through which it moves. Optical density is related to the index of refraction; sample values are given.
Handout
Fourmilab Switzerland

John Walker: C Ship: The Dilation of Time

For Students 9th - 10th
A good mathematical account of what happens to time as you approach c: the speed of light. Also provides a rather a fascinating video (fly through the Lattice) - don't miss it. Take some time and explore this site.

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