约 304 个结果
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  1. nasa.gov
    https://imagine.gsfc.nasa.gov/science/toolbox/emspectrum1.html

    Electromagnetic Spectrum - Introduction - Imagine the Universe!

  2. nasa.gov
    https://imagine.gsfc.nasa.gov/science/toolbox/spectra1.html

    Spectra and What They Can Tell Us - Imagine the Universe!

  3. nasa.gov
    https://imagine.gsfc.nasa.gov/science/toolbox/emspectrum2.html

    The Electromagnetic Spectrum - Imagine the Universe!

  4. nasa.gov
    https://imagine.gsfc.nasa.gov/science/toolbox/spectrum_chart.html

    Wavelength, Frequency, and Energy - Imagine the Universe!

  5. nasa.gov
    https://imagine.gsfc.nasa.gov/science/activities/quiz_l2/emspectrum_…

    Electromagnetic Spectrum Quiz - Imagine the Universe!

  6. nasa.gov
    https://imagine.gsfc.nasa.gov/science/toolbox/emspectrum_observat…

    Observatories Across the Electromagnetic Spectrum - Imagine the …

  7. nasa.gov
    https://imagine.gsfc.nasa.gov/science/toolbox/history_multiwavelengt…

    Discovering the Electromagnetic Spectrum - Imagine the Universe!

  8. nasa.gov
    https://imagine.gsfc.nasa.gov/resources/dict_qz.html

    Imagine the Universe!

  9. nasa.gov
    https://imagine.gsfc.nasa.gov/educators/lessons/xray_spectra/backg…

    Background: Introduction to Spectroscopy - Imagine the Universe!

  10. nasa.gov
    https://imagine.gsfc.nasa.gov/science/toolbox/emspectrum1_fact.html

    Electromagnetic Spectrum Cool Fact - Imagine the Universe!