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.
NASA
Nasa: Imagine the Universe: Welcome to the World of Multiwavelength Astronomy!
This Imagine the Universe site provides an introduction into the multiwavelength universe and astronomy. Site provides graphics, links to a quiz, facts on this topic as well as teacher resources.
NASA
Viewing the Violent Universe: What Are Gamma Rays?
The universe produces a broad range of light, only a fraction of which is visible to our eyes. Gamma rays are nonvisible light, which also includes x-rays, ultraviolet light, infrared radiation, and radio waves.
TeachEngineering
Teach Engineering: Quantum Dots and Colors
Students are introduced to the physical concept of the colors of rainbows as light energy in the form of waves with distinct wavelengths, but in a different manner than traditional kaleidoscopes. Looking at different quantum dot...
TeachEngineering
Teach Engineering: Thirsty for Gold
Student teams conduct an experiment that uses gold nanoparticles as sensors of chemical agents to determine which of four sports drinks has the most electrolytes. In this way, students are introduced to gold nanoparticles and their...
Florida State University
Florida State University: Molecular Expressions: Primary Subtractive Colors
Manipulate "pigmented" color discs to see how mixing subtractive colors affect the overall color.
Simon Fraser University
Chem1 Virtual Textbook: Particles and Waves
Acting as a subtopic of the General Chemistry Virtual Textbook's section on Atoms and the Periodic Table, this site discusses wavelength and the uncertainty principle. Information is also provided on de Broglie wavelength and electron...
NASA
Electromagnetic Spectrum: Ultraviolet Waves
Ultraviolet (UV) light has shorter wavelengths than visible light. Though these waves are invisible to the human eye, some insects can see them. The specific wavelength values are given. Uses and applications of these waves are explained.
Sophia Learning
Sophia: Radiation and Energy: Lesson 2
This lesson discusses the light spectrum and its influence on living things. It is 2 of 3 in the series titled "Radiation and Energy."
Florida State University
Florida State University: Molecular Expressions: Electromagnetic Radiation
This Florida State University page introduces light as an electromagnetic wave and discusses the frequency and wavelength range of the various regions of the electromagnetic spectrum. Includes links to some interactive Java applets.
Georgia State University
Georgia State University: Hyper Physics: Wave Motion
Two wave graphs depicting a sine wave and relating the various characteristics (wavelength, amplitude, frequency, and period) of a wave to each other. The site includes an interactive JavaScript form in which the visitor enters one...
NASA
Nasa: Space Place: The Electromagnetic Spectrum
Find out how energy, frequency, and wavelength are related in terms of the electromagnetic spectrum.
Lawrence Berkeley National Laboratory
Berkeley Lab: University of California: Electromagnetic Radiation
This page defines electromagnetic radiation. Included are links to more information.
Curated OER
Georgia State University: Color
This site from Georgia State University discusses the location of visible light on the electromagnetic spectrum. Includes the wavelength values for various colors of light within the visible light spectrum.
Curated OER
Georgia State University: Color
This site from Georgia State University discusses the location of visible light on the electromagnetic spectrum. Includes the wavelength values for various colors of light within the visible light spectrum.
Khan Academy
Khan Academy: Electromagnetic Waves: The Electromagnetic Spectrum and Photons
An article that discusses the coupling of an electric field with a magnetic field to create electromagnetic waves. Article also discusses how different types of electromagnetic waves have different wavelengths which forms the...
Space Telescope Science Institute
Hubble Site: Behind the Pictures
At this site from HubbleSite, you can take a peek behind the scenes and discover the meaning of color in Hubble Images.
NASA
Nasa: Mission: Science: Electromagnetic Spectrum: Infrared Waves
Infrared light lies between the visible and microwave portions of the electromagnetic spectrum. Infrared light has a range of wavelengths, just like visible light has wavelengths that range from red light to violet.
McGraw Hill
Mc Graw Hill Higher Education: Johnson Explorations: Photosynthesis
Photosynthesis is illustrated in this interactive. Begin by looking at a chloroplast and follow the path of electrons throughout. Discover what can affect the rate of photosynthesis by adjusting the light intensity and light wavelength.