Waves: Electromagnetic waves. Flashcards

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1
Q

Are electromagentic waves traverse or longitudnal?

A
  • Transverse.
  • ## Transfer energy from the source of the waves to an absorber.
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2
Q

What is the electomagnetic spectrum?

A
  • Begginning of Spectrum: Lower frequency and longer wave length.
  • End of the spectrum: Higher Frequency and shorter wave length.
  • Radio Waves, Microwaves, Infrared Radiation, Visible light, ultra violet radiation, x-rays, Gamma rays.
  • Visible light= only part of electromagentic spectrum that can be detected by the human eye.
  • Waves do not need a medium to travel in and can travel through a vaccum.
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3
Q

What speed do electromagnetic waves travel in?

A
  • All electromagnetic waves travel in the same speed in a vaccum.
  • Speed is: 3 x 10^8 m/s.
  • Different materials absorb, transmit, or reflect electromagentic waves.
  • What happens to the waves depends on the wave length.
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