Special GoogleHealth Search
|
This
is an image of Phoenix, Arizona
showing the near infrared data
collected by the Landsat 5
satellite. The light areas are areas
with high reflectance of near
infrared waves. The dark areas show
little reflectance. What do you
think the black grid lines in the
lower right of this image represent?
|
|
This
image shows the infrared data
(appearing as red) composited with
visible light data at the blue and
green wavelengths. If near infrared
is reflected off of healthy
vegetation, what do you think the
red square shaped areas are in the
lower left of the image?
|
Instruments on board satellites can also
take pictures of things in space. The image
below of the center region of our galaxy was
taken by IRAS. The hazy, horizontal S-shaped
feature that crosses the image is faint heat
emitted by dust in the plane of the Solar
System.
Infrared Processing and Analysis Center,
Caltech/JPL
|
|
|
|
|