EM Waves 04

OPENING QUESTION: What is the wavelength of light with a frequency of 1295 megacycles?

How much energy does ONE photon of that light carry?

What uses has the FCC set aside for that type of light?


LEARNING TARGET: I will investigate how astronomers study each type of light in the EM Spectrum during today's class


  • hertz (Hz): a measure of wave frequency in waves/second
  • electromagnetic waves (light waves from radio - gamma)
  • quantum jump
  • energy levels
  • excited (electron) = ("electrons 'jolted' into a higher energy level")
  • rest state (electron) = ("electrons existing on the lowest energy level")


h = Plank's Constant = (6.63 x 10-34 m2kg/s)

c=λυ: The speed of light (c) = wavelength (λ "lamda") x frequency "nu")

E = hυ (The energy in a photon of light is given by Plank's Constant times the frequency of that light


Test returns today

Test on light waves on Thursday

Begin TFAD work on Friday



Let us return to our project to examine the various types of RMIVUXG light:

By the end of class today you should have:

    • A list of all the types of light in some sort of order

    • A well-crafted, thoughtful explanation of how that type of light is created by humans here on Earth

    • Several well-crafted, thoughtful descriptions of how we as humans use or experience that type of light here on Earth

    • An example of the specialized equipment ASTRONOMERS use to observe phonomena in that type of light in the Universe.

    • A picture of an astronomical object photographed in that type of light