Finding “brown dwarfs” helps us measure the mass of the universe.
Debris disks – signs of other solar systems?
Slide 16
Dust absorbs visible light and re-emits it in the infrared.
Some galaxies emit most of their light in the infrared.
Slide 17
Visible light from very distant objects is shifted to the infrared.
Just as the pitch of a train whistle changes as it passes an observer, the observed wavelength of light emitted by a moving object also shifts.
Slide 18
Infrared light is mostly absorbed by our atmosphere.
Slide 19
Michelle Thaller
thaller@ipac.caltech.edu
SIRTF Science Center,
California Institute of Technology
sirtf.caltech.edu
Space Science Education
Resource Directory
Teachspacescience.org
Origins Education Forum
Origins.stsci.edu
Click on “Educator Resources”,
and then select “Curriculum Support”
Slide 20
Slide 21
Remote controls use infrared light.
Our eyes see only part of the electromagnetic spectrum…
Slide 22
Materials:
Glass prism
Three alcohol thermometers
Flat black paint or a permanent black marker
Scissors or a prism stand
Cardboard box
Blank sheet of white paper
Tape
Binders, books, or blocks
Observation chart
Pencils or pens
Preparation:
Acquire materials
Blacken thermometer bulbs
Cut out notch in box for prism
Identify location and time for experiment
Try experiment
Slide 23
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Much more available at sirtf.caltech.edu. Click on the “Education” button.