TeachEngineering
Teach Engineering: Riding the Radio Waves
In this lesson plan students learn how AM radios work through basic concepts about waves and magnetic fields. Waves are first introduced by establishing the difference between transverse and longitudinal waves, as well as identifying the...
PBS
Pbs Learning Media: How Is a Radio Wave Emitted?
This illustrated essay from A Science Odyssey Web site explains the science behind radio waves, including the role of electrons and electromagnetic fields.
CK-12 Foundation
Ck 12: Physical Science: Electronic Signal
[Free Registration/Login may be required to access all resource tools.] Covers electronic signal, how an electric current can be used to send an electronic message, what analog and digital signals are, and the difference between them.
Georgia State University
Georgia State University: Hyper Physics: Fiber Optics
This physics department site provides a discussion and explanation of fiber optics and fiber optic imaging.
NASA
Nasa: Electromagnetic Spectrum: Radio Waves
Radio waves have the longest wavelengths in the electromagnetic spectrum. This NASA article discusses AM, FM, TV, cell phone, as well as radio astronomy, which all use this technology.
University of California
Uc Berkeley: Radio Spectrum
From a course titled "Structure and Interpretation of Signals and Systems." A discussion of the entire radio spectrum, listing wavelength and frequency values for its various parts. The uses of each region of the radio spectrum is...
CK-12 Foundation
Ck 12: Physical Science: Optical Instruments
[Free Registration/Login may be required to access all resource tools.] What optics are and different types, and how they work and form images.
CK-12 Foundation
Ck 12: Physical Science: Radio Waves
[Free Registration/Login may be required to access all resource tools.] Radio waves and how they are used for AM and FM radio and television.
The Wonder of Science
The Wonder of Science: Ms Ps4 3: Digitized Wave Signals
Work samples, phenomena, assessment templates, and videos that directly address standard MS-PS4-3: digitized wave signals.
South Carolina Educational Television
Kids Work!: History of Telecommunications
An in-depth look at inventions and developments that had an impact on telecommunication.