Take the following to the Goudsmit conference room:
FLIR camera, video cable, power cable (if battery charge is low), tripod; black garbage bag, aluminum foil, glass plate, glass rod; lighter, blowtorch (in 2 parts); and plastic cup with cold (tap) water in it.
Note that the camera measures the temperature at the crosshairs. With people in the picture, the auto scale will go from 23°C (dark violet) to 37°C (bright yellow).
Remove the chairs from the south end and southwest corner of the conference room table.
Attach the FLIR camera to the tripod, with the up-down angle control rod parallel to the camera.
Set the camera near the computer monitor in the Goudsmit conference room.
Connect the video cable to the camera, with the yellow video signal going to the yellow connector on the patch panel below the computer keyboard.
If the battery charge is low, connect the power cable from the camera to the power strip below the video patch panel.
Turn on the overhead projector and press the "N" button (the crossed out VCR button) to connect to the camera.
Aim the camera toward the southwest door of the Goudsmit conference room.
Make sure the laser pointer of the camera does not go out the small window in that door. Point the laser pointer at the middle of the door, and focus on the door.
What is warm? Pan the camera over the students, the fluorescent lights above their heads, the projector, and the computer monitor.
Have a volunteer stand to the side of the screen, and focus on his/her hand. Notice that people's foreheads are warmer than the rest of their face.
Notice that people's noses are cooler than the rest of their face, especially if they inhale quickly (noses can be blue).
Notice that people's glasses are opaque and cooler than their faces.
Notice that clothing is somewhat warm.
Have someone retract their hand from the end of a sweater or hoodie -- the end of the sleeve will be warm.
Have someone get out of their seat, and observe the pattern where they sat.
What transmits infrared? What can the camera see through? Note that the camera lens is opaque. Turn the room lights off and on, and show that the camera image doesn't change.
Cover the camera with the black plastic bag, and show that it sees through it.
Cover the instructor with the black plastic bag, and show that the camera can see the instructor.
Place the aluminum foil in front of the instructor's face to show that aluminum blocks infrared.
Place the glass plate in front of the instructor's face to show that glass blocks infrared.
Go behind the door and small glass window, to show that glass blocks infrared.
What reflects infrared? Focus on the small glass window on the door.
Stand to the left of the camera, and show the reflection of the instructor in the glass window.
Write on the door, using the side of your fist. Make a handprint on the door, by leaving your hand there for a short while.
Can we see hot gases? Make a flame with the lighter.
The body of the lighter will look blue, while the flame will show size and structure beyond what is visible.
(It's also possible to see the insides of someone's nostrils turn blue if they inhale fast, then red as they exhale.)
Put the blowtorch on the southwest corner of the conference room table, pointed across the field of view of the camera.
Put the glass plate on the side table, to later put the hot glass rod on it. Make a flame with the blowtorch.
Observe the hot gases rising. How long does it take for heat to conduct?
Gently warm the end of the glass rod. Show that the end is red.
Gently warm a small section of the rod, a couple of inches from the end.
Show that the thermal conductivity of glass is low, because the 2 red spots stay separated by a blue section for a long time.
Place the hot glass rod on the glass plate on the side table, and allow it to cool before moving it to your office.
What is cool? Show that the mug with cold water in it is blue against the background of the instructor. Dip a finger in the water until it is blue.
Have students come up and look at (focus/defocus, etc.) the camera.