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National Center for University Corporation

Teresa Eastburn Tim Barnes. National Center for University Corporation Atmospheric Research for Atmospheric Research. The Interior of the Sun. Sunspots. Magnetic “ loops ” near

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National Center for University Corporation

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  1. Teresa Eastburn Tim Barnes National Center for University Corporation Atmospheric Research for Atmospheric Research

  2. The Interior of the Sun

  3. Sunspots Magnetic “loops” near sunspot area Source NASA TRACE Spacecraft

  4. Solar Flares

  5. Coronal Mass Ejection

  6. Solar Cycle

  7. Earth’s Magnetosphere

  8. Activity on The Nature of Light – Absorption, Reflection (Scattering), Transmission, or Combination of These Meet the Photon Folks

  9. Where does color come from? What if...

  10. Weather and Light Text Text

  11. Air Temperature

  12. Atmosphere’s Convection Currents

  13. TakingLight Apart; PuttingItBackTogether The Sun in Visible Light -- What color is this light? White? Are you sure? Let’s find out! White-light image of the sun. Taken on September 13, 2001 by the Big Bear Observatory

  14. Blue Sky* Activity ... and Red Sunsets

  15. OurAtmospherefromSpace

  16. Sun seen in light/radiation that isinvisible to our eyes. Extreme Ultraviolet image of the sun. Taken on September 13, 2001 by the Extreme Ultraviolet Imaging Telescope aboard the SOHO Spacecraft. Soft X-ray image of the sun. Taken on September 13, 2001 by the Yohko Spacecraft.

  17. Ultraviolet Light Infrared Light Visible Light

  18. Frequency is the number of waves in a given unit of time, usually a second. Frequency is measured in Hertz. Wavelength is the distance from the crest of one wave to the crest of the next. Wavelength is measured in meters.

  19. Wave Demo Activity

  20. Spectroscope Activity

  21. a. Incandescent b. Fluorescent c. Hg low pressure d. Hg high pressure e. Metal Halide f. Na (sodium) high g. Na low pressure h. Red Neon Sign i. Neon Sign (other than red)

  22. Our Atmospheric Filter

  23. ALBEDO – the amount of light energy reflected by the Earth, measured on a scale from 0 to 1 or 0 to 100% (Earth’s average albedo is about 0.31 or 31% -- Snow has a high albedo; the ocean has a low albedo))

  24. AlbedoZebraStripes!

  25. IR movie Source: Jet Propulsion Laboratory & the University of California

  26. 11 million square miles 3 times the size of the U.S.

  27. Refraction of Light Light is bent by refraction. The index of refraction for water is 4/3, implying that lighttravels 3/4 as fast in water as it does in a vacuum.

  28. Tangent point The LEO tracks the GPS phase while the signal is occulted to determine the Doppler -- when you understand light, you can understand today’s most advanced technological tools. For instance you have to understand principals of refraction to understand radio occultation. (Demonstrate refraction by having students stick a sharp pencil through a closed baggy filled with water vGPS LEO vleo

  29. Ultraviolet Light

  30. Thank you for joining us today for Ina NewLight

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