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Section 7
The Electromagnetic Spectrum

In this section you will find materials that support the implementation of EarthComm, Section 7: The Electromagnetic Spectrum.

Inquiring Further

  1. To learn more about using radio waves to study distant objects, visit the following web site:

    Radar, Studyworld
    Find out how scientists study distant objects using the VLA and radio waves.

  2. To learn more about detection of electromagnetic radiation, visit the following web sites:

    Sensor Technology, NASA
    Learn how sensors and detectors are used to detect and measure electromagnetic radiation.

    The Very Large Array and the Very Long Baseline Array, National Radio Astronomy Observatory
    Read about the radio telescope arrays that allow scientists to look deep into space.

  3. To learn more about technologies that use electromagnetic radiation, visit the following web sites:

    Invention of the Microwave, The Great Idea Finder
    Learn more about the history and technology of the microwave oven.

    How does an x-ray machine work?, Howstuffworks
    Learn how an x-ray machine produces x-rays.

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To learn more about this topic, visit the following web sites:

The Nature of Electromagnetic Radiation

The Electromagnetic Spectrum, NASA
This home page provides links to two different topic levels, the second slightly more advanced than the first. The topics for Level One include: Measuring the Electromagnetic Spectrum, A Radio Wave Is Not a Gamma-ray, a Microwave Is Not an X-ray... or Is It?, Why Do We Have to Go to Space to See All of the Electromagnetic Spectrum?. The topics for Level Two include: More about the Electromagnetic Spectrum, and Space Observatories in Different Regions of the EM Spectrum.

All About Spectra, University of Illinois
Try another brief overview on electromagnetic spectrum and electromagnetic wave radiation.

Astronomy and the Electromagnetic Spectrum

An Introduction to Radio Astronomy, National Radio Astronomy Observatory
The NRAO web site offers an education section with various resources including background information and a photo gallery. The Introduction to Radio Astronomy is particular page that offers answers to frequently asked questions about radio astronomy, an article about the VLA and VLBA in New Mexico, and more.

The Electromagnetic Spectrum
Offers a good description of important properties of the major regions of the spectrum.

Using Electromagnetic Radiation to Understand Celestial Objects

Amazing Space, Space Telescope Science Institute
Explore space with the Hubble Telescope. Learn about what different colors say about stars by clicking on Star Light, Star Bright.

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Animations and Video

To view animations and video related to this topic, visit the following web sites:

Launchpad: Neon Lights - Spectroscopy in Action, NASA
At this website, locate and watch the NASA eClip titled, "Launchpad:  Neon Lights - Spectroscopy in Action."  This video examines emission spectrums and absorption spectrums and their application to objects in space.

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