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Title:

The Electromagnetic spectrum

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Our eyes can perceive only a small fraction of the Full electromagnetic spectrum Infared energy is perceived as heat Microwave picture of the Milky Way galaxy TV ... – PowerPoint PPT presentation

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Title: The Electromagnetic spectrum


1
The Electromagnetic spectrum
2
Energy exists as waves or particles
3
Visible light
Our eyes can perceive only a small fraction of
the Full electromagnetic spectrum
4
Infared light
  • Infared energy is perceived as heat

5
Microwavesand radio waves
  • Microwave picture of the Milky Way galaxy
  • TV, radio, radar, and cell phones work in these
    frequencies

6
Ultraviolet spectrum
Many life forms can perceive UV light
Light with wavelengths shorter than visible
light are considered ionizing radiation
7
X radiation
  • Black holes are discovered by the x-rays they emit
  • Penetrate tissues, but are absorbed by bone

8
Gamma radiation
Gamma radiation cancer therapy
Supernova emitting gamma radiation
Gamma knife surgery
9
(No Transcript)
10
(No Transcript)
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