Exploring Infrared Image Technology
Activity Time: 25-45 minutes
1. Project (via computer or overhead transparency) one of the following pictures from the Cool Cosmos: Our Infrared World Image Gallery, http://coolcosmos.ipac.caltech.edu/image_galleries/our_ir_world_gallery.html. Initially show the picture with the temperature scale covered/hidden.
2. Prompt discussion by asking questions. Guide the discussion to allow for learner questions. Use the Infrared Image Gallery to help guide their inquiry during the second activity. Included below are some example questions and responses that should be discussed before moving forward.
NOW SHOW THEM THE TEMPERATURE SCALES
NOW SHOW THEM A VISIBLE LIGHT IMAGE OF THE POPSICLE, TOASTER, HAIRDRYER
THEY SHOULD MAKE THE CONNECTION THAT INFRARED IMAGES CAN GIVE US IMPORTANT INFORMATION ABOUT AN OBJECT THAT OUR EYES CANNOT!
3. Have a short presentation on infrared cameras, false-color images, and how to interpret false-color images. This need only be a few minutes so that your learners have a brief introduction to the technology.
4. As a follow-up to the initial discussion and the short presentation, use the following sets of images in an open discussion of comparing and contrasting. This brief activity should be used to solidify their new and basic knowledge of the false-color infrared images. This may also be done in small groups. Some questions for learners to answer:
Cups Containing Hot and Cold Water,
Faucet Running Hot and Cold Water,
Shoe Just After Being Worn,
5. Have groups present their work or hold another discussion to wrap up these aspects of infrared imaging.
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