EM Waves 05

OPENING QUESTION:

Hi there!

I'm a photon of light with 5.65 x 10-23 J of energy. Who am I and what is my wavelength?

═══════════════════════════

LEARNING TARGET: I will investigate infrared light during today's class.

WORDS O' THE DAY:

  • 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")

FORMULAE OBJECTUS:

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

WORK O' THE DAY:

═══════════════════════════

1) Now let's take a gander at the IR camera itself.... where do all the pretty colors come from? (Waita sec...I thought IR light was invisible??). Please provide a well-crafted response and have the person designated by the color RED record that on our slides:

2) Let's bring up a volunteer and have them stand about 3 meters (10 feet or so) away from me. I'll point the IR camera at the white board.... Please have a conversation and PREDICT what will happen.

Our volunteer will now lead us in a conversation to determine what MUST be occurring in terms of the characteristics of IR light.

3) I'm going to place a trash bag over my head (no jokes please...hah!) and have some lucky person take a picture of me with the IR camera. Please have a conversation and PREDICT what you think will occur.

Now that you've seen what happens, please pass the chromie to the clockwise person and have a thoughtful conversation and provide a thoughtful, written response on your IR slide

4) I'm going to place my hand on the whiteboard for a few moments, move it, and then take a picture of that part of the whiteboard with the IR camera. Please have a conversation and PREDICT what you think will occur.

Now that you've seen what happens, please pass the chromie to the clockwise person and have a thoughtful conversation and provide a thoughtful, written response on your IR slide

5) I'm going to move an ice cube over my head and then take a picture with the IR camera. Please have a conversation and PREDICT what you think will occur.

Now that you've seen what happens, please pass the chromie to the clockwise person and have a thoughtful conversation and provide a thoughtful, written response on your IR slide

6) Now let's send someone outside and take a picture of them through the window...