Curated OER
Earth's Atmosphere II
In this Earth's atmosphere learning exercise, students use the chart shown to determine which information is given for each gas. Then they write the names of the layers of the Earth's atmosphere and describe which layer the temperature...
Curated OER
Telegraphy
Students research the telegraph. In this telegraph lesson, students review the history of the telegraph. Students complete radio wave experiments. Students work in pairs to complete 3 sound exercises.
NASA
Nasa: Imagers: The Electromagnetic Spectrum
NASA site provides information on waves, electromagnetic waves and their wavelengths.
PBS
Pbs Learning Media: Radio Waves: Fm vs. Am
This brief essay from A Science Odyssey Web site describes the difference between FM and AM radio waves.
PBS
Pbs Learning Media: Radio Transmission
This interactive activity from A Science Odyssey tracks the journey of a sound wave from the moment a musician sings into a microphone until his voice reaches the vibrating speakers of an AM Radio.
Science Buddies
Science Buddies: Wave Blockers
What do the radio, TV, radio controlled cars, and cell phones all have in common? They all use invisible waves to transmit information. Find out which materials block radio waves, and which materials allow radio waves to pass through in...
University of Colorado
University of Colorado: Ph Et Interactive Simulations: Radiowaves and Electromagnetic Fields
Broadcast radio waves from KPhET. Wiggle the transmitter electron manually or have it oscillate automatically. Display the field as a curve or vectors. The strip chart shows the electron positions at the transmitter and at the receiver.
University of Colorado
University of Colorado: Physics 2000: Cat Scans: Projecting Shadows
This page and the three pages which follow discuss how X-ray technology can be used to produce an image of the human body. Discussion is understandable and highly intriguing. Several interactive animations allow the visitor to explore...
Creative Science Centre
Creative Science Centre: G1 Exg's Radio Page
An extensive collection of links on anything to do with amateur radio, including experiments and projects, crystal set radio, radio magazines, educational sites, and materials suppliers.
Creative Science Centre
Creative Science Centre: Making a Rough Science Short Wave Crystal Set Radio
Presents plans for making a shortwave crystal set radio that is capable of receiving stations from around the world with a good antenna and earth connection.
PBS
Pbs: American Experience: Joseph Henry Lays Groundwork for the Telephone
This is the man who most encouraged Bell to invent the telephone. Bell said, "But for Henry, I never would have gone ahead with the telephone." This is a fascinating account both of Bell's invention and of Henry's life. Half a biography,...
PBS
Pbs: Cet: A Science Odyssey: Radio Transmission
In this illustrated tutorial, find out how radio signals get transmitted from an antennae to the air.
Other
Lee De Forest, American Inventor: The Complete Lee De Forest
An extensive site covering all aspects of Lee de Forest, his inventions, writings, and personal life. Find drawings and pictures of his audion tube and find out about his legacy, especially in the world of electronics.
The Franklin Institute
Franklin Institute Online: Guglielmo Marconi
Wireless communication was around in the 1800's. Learn about Guglielmo Marconi, his discovery of wireless communication and his rewards.
Nobel Media AB
The Nobel Prize: Marie and Pierre Curie and the Discovery of Polonium and Radium
The Nobel Foundation provides a lecture given by Nanny Froman at the Royal Swedish Academy of Science in Sotckholm, Sweden. "Marie and Pierre Curie and the Discovery of Polonium and Radium" is organized into several sections including:...
Georgia Department of Education
Ga Virtual Learning: Electromagnetic Waves
Through informational text, interactive activities, practice problems, and virtual simulations, students explore the properties of electromagnetic waves.
TeachEngineering
Teach Engineering: Am I on the Radio?
During this activity, students create a working radio by soldering circuit components supplied from an AM radio kit. Since this activity is carried out in conjunction with the associated lessons concerning circuits and how an AM radio...
NASA
Nasa's the Space Place: A Trip to the Land of the Magic Windows
Explore the electromagnetic spectrum and learn about each type of energy on the spectrum.
PBS
Pbs Learning Media: The Electromagnetic Spectrum: Frontline
This video segment adapted from FRONTLINE introduces the electromagnetic spectrum and explains how the various types of electromagnetic waves are distinguished by the amount of energy each wave carries.
TeachEngineering
Teach Engineering: Riding the Radio Waves
In this lesson learners 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...
University of Colorado
University of Colorado: Physics 2000: Electromagnetic Waves
Using a student-teacher dialogue format, this page discusses the nature of light as an electromagnetic wave and the electromagnetic spectrum.
NOAA
Noaa: Space Environment Topics: Radio Wave Propagation [Pdf]
NOAA has produced a series of topic papers for use by teachers and students. This paper is on the increase of radio wave activity and the effects solar emissions have on it. PDF format.
Other
Marconi Corporation: Marconi Calling
Read about Guglielmo Marconi's life and his scientific achievements in the realm of radio and communications. Hear wireless transmissions, and use the interactive timeline to see the development and use of Marconi's achievements.
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.