How Can Getting Farther Away from Earth Help Us See It More Clearly?
ESU101  Seeing Without Light

Visible light isn't the only wavelength of energy that satellite images record. Specialized sensors on satellites record energy at many different wavelengths to generate images of things that can't be detected with the unaided eye. Instruments that are sensitive to infrared waves (slightly longer than visible light waves) can record scenes even at night.

  !   Click the image to see the animation. Use the movie controls to step through the frames or replay the sequence.
These images show two days of weather patterns over the eastern United States. Images on the left show visible light images, while images on the right show the same scene at infrared wavelengths.

5. How do infrared wavelength detectors help weather forecasters?

 Step:   1   2   3   4   5   6   7   8   9