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Fundamentals of Remote Sensing: Electromagnetic Spectrum and Systems
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Fundamentals of Remote Sensing: Electromagnetic Spectrum and Systems

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Questions and Answers

What is the portion of the electromagnetic spectrum that is visible to the human eye called?

  • Visible Spectrum (correct)
  • Microwave Spectrum
  • Infrared Spectrum
  • Ultraviolet Spectrum
  • Which wavelengths do optical remote sensing devices operate in?

  • Ultraviolet, near-infrared, and thermal infrared
  • Visible, ultraviolet, and microwave
  • Infrared, thermal infrared, and microwaves
  • Visible, near-infrared, middle infrared, and short-wave infrared (correct)
  • What range of wavelengths does a typical human eye respond to?

  • 400 to 700 nanometers (correct)
  • 100 to 400 nanometers
  • 200 to 600 nanometers
  • 300 to 800 nanometers
  • Which type of sensor is involved for data acquisition in thermal infrared remote sensing systems?

    <p>Thermal sensor</p> Signup and view all the answers

    Which portion of the electromagnetic spectrum includes wavelengths longer than those of visible light?

    <p>Infrared Spectrum</p> Signup and view all the answers

    What is used to make electromagnetic radiation outside the visible range visible to the human eye in remote sensing systems?

    <p>Various kinds of tools and devices</p> Signup and view all the answers

    What is the range of wavelengths for which most remote sensors record Electromagnetic Radiation (EMR)?

    <p>300 nm to 3000 nm</p> Signup and view all the answers

    Which region of the electromagnetic spectrum do thermal remote sensing systems primarily operate in?

    <p>Infrared waves</p> Signup and view all the answers

    What type of sensor is typically involved for data acquisition in thermal infrared remote sensing systems?

    <p>Active sensor</p> Signup and view all the answers

    Which type of radiation is invisible to the human eye and makes up part of the electromagnetic spectrum?

    <p>Gamma rays</p> Signup and view all the answers

    What is the continuum series of electromagnetic energy arranged according to frequency and wavelength called?

    <p>Electromagnetic spectrum</p> Signup and view all the answers

    Which region of the electromagnetic spectrum includes wavelengths longer than those of visible light?

    <p>Infrared waves</p> Signup and view all the answers

    What is the range of wavelengths for microwaves in the electromagnetic spectrum?

    <p>1 mm to 1 m</p> Signup and view all the answers

    Which type of remote sensor records backscattered microwaves in the electromagnetic spectrum?

    <p>RADAR sensor</p> Signup and view all the answers

    What are visible light waves made up of?

    <p>Vibrating waves of electrical and magnetic fields</p> Signup and view all the answers

    What is used to make electromagnetic radiation outside the visible range visible to the human eye in remote sensing systems?

    <p>Visible light waves</p> Signup and view all the answers

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