Beyond the Visible

This is the official forum for the course "Beyond the Visible - Introduction to Hyperspectral Remote Sensing"


Find answers, ask questions, and connect with our
community around the world.

Landing Page Hero Forums Beyond the Visible Electromagnetic radiation (EMR)

  • Electromagnetic radiation (EMR)

    Posted by HYPERedu on November 24, 2021 at 1:52 pm

    This is the official discussion topic on Electromagnetic radiation (EMR). Feel free to ask your questions related to this topic or give feedback.

    Saskia replied 9 months, 3 weeks ago 5 Members · 4 Replies
  • 4 Replies
  • Jannis Viola

    December 7, 2021 at 9:52 pm

    Thank you HYPERedu for this great tutorial and overall great learning resource! However, for consistency reasons, i wanted to point out that in the graphic on Wien’s displacement law you have utilized the abbreviation FIR, which has previously not been introduced. Of course, one might be able to deduct that “F” stands for “far”-infrared, but i thought it might be helpful in the preceding graph on the EMR spectrum.

    • This reply was modified 9 months, 3 weeks ago by  Jannis Viola.
    • Saskia

      December 8, 2021 at 10:50 am

      Dear Jannis, Thank you very much for the kind words and the helpful comment. Yes, your are right, FIR stands for far-infrared. We will include it in the list of abbreviations when we revise the MOOC. Thank you again.

      • This reply was modified 9 months, 3 weeks ago by  Saskia.
  • KSab Magar

    December 3, 2021 at 2:06 pm

    May be comparable to the speed of light divided by unit.

  • Dionysios Tompros

    December 2, 2021 at 10:24 am


    what’s the theoretical maximum frequency which can be achieved considering matter’s limitations?