Curated OER
AM to FM - Lesson 4
Students examine different music styles played on AM radio versus FM radio. They compare a 1972 music hit from AM radio with a 1972 hit album on FM radio.
NPR: National Public Radio
Npr: Techno Pop
Feature series on "The Secret History of Technology and Pop Music," traced partly through the story of an Indiana company that stopped making pianos and started cutting 78 rpm records using the talents of famous jazz musicians and others.
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.
PBS
Pbs: Who Made America?: Innovators: Edwin Armstrong
This brilliant engineer advanced both AM and FM radio, turning them into viable broadcast technologies, and innovated military radio uses in two World Wars.
National High Magnetic Field Laboratory
Magnet Academy: Timeline of Electricity and Magnetism: 1930 1939
New tools such as special microscopes and the cyclotron take research to higher levels, while average citizens enjoy novel amenities such as the FM radio.
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.