Free Posters Photos & Images

Find and download poster pictures on Pikwizard. We have thousands of free stock photos in our image library including poster images and more.

05
Boy showing a poster with ADHD in the park
08
Digital composite of cook woman with wood fork and poster
00
Building Machine Architecture
00
Action an equal brotherhood collaboration
00
These L-band images of the Manaus region of Brazil were acquired by the Spaceborne Imaging Radar-C and X-band Synthetic Aperture Radar (SIR-C/X-SAR) aboard the space shuttle Endeavour. The left image was acquired on April 12, 1994, and the middle image was acquired on October 3, 1994. The area shown is approximately 8 kilometers by 40 kilometers (5 miles by 25 miles). The two large rivers in this image, the Rio Negro (top) and the Rio Solimoes (bottom), combine at Manaus (west of the image) to form the Amazon River. The image is centered at about 3 degrees south latitude and 61 degrees west longitude. North is toward the top left of the images. The differences in brightness between the images reflect changes in the scattering of the radar channel. In this case, the changes are indicative of flooding. A flooded forest has a higher backscatter at L-band (horizontally transmitted and received) than an unflooded river. The extent of the flooding is much greater in the April image than in the October image, and corresponds to the annual, 10-meter (33-foot) rise and fall of the Amazon River. A third image at right shows the change in the April and October images and was created by determining which areas had significant decreases in the intensity of radar returns. These areas, which appear blue on the third image at right, show the dramatic decrease in the extent of flooded forest, as the level of the Amazon River falls. The flooded forest is a vital habitat for fish and floating meadows are an important source of atmospheric methane. This demonstrates the capability of SIR-C/X-SAR to study important environmental changes that are impossible to see with optical sensors over regions such as the Amazon, where frequent cloud cover and dense forest canopies obscure monitoring of floods. Field studies by boat, on foot and in low-flying aircraft by the University of California at Santa Barbara, in collaboration with Brazil's Instituto Nacional de Pesguisas Estaciais, during the first and second flights of the SIR-C/X-SAR system have validated the interpretation of the radar images.  http://photojournal.jpl.nasa.gov/catalog/PIA01740
03
Banknote bill collect dollar bill
00
Scuba diver Diver Explorer
04
Graffito Artwork Decoration
00
Boy looking away while sitting at desk in classroom
04
Interior of empty classroom with desks and chairs
07
High angle view of various technologies with colorful charts and coffee on table
07
Empty benches in classroom at school
00
Flowers colorful plants bloom
01
Silhouette Black Design
00
Person Walking Along Concrete Wall With Old Forester Bottle Graffiti
00
Analog photography contact sheet hand light
06
Graphic Design Wallpaper
02
Sign Sky Clouds
00
Business Sky Silhouette
03
Wine Alcohol Glass
02
Attentive senior woman painting bowl in drawing class
05
Architecture art candles design
00
Mid section of woman painting bowl in class
06
Hand of woman molding clay in drawing class
00
Design Carousel Park
00
Locks lockets chainlink
00
Board game box business card
00
The Thwaites Ice Tongue is a large sheet of glacial ice extending from the West Antarctic mainland into the southern Amundsen Sea. A large crack in the Thwaites Tongue was discovered in imagery from Terra's Moderate Resolution Imaging SpectroRadiometer (MODIS). Subsequent widening of the crack led to the calving of a large iceberg. The development of this berg, designated B-22 by the National Ice Center, can be observed in these images from the Multi-angle Imaging SpectroRadiometer, also aboard Terra. The two views were acquired by MISR's nadir (vertical-viewing) camera on March 10 and 24, 2002.  The B-22 iceberg, located below and to the left of image center, measures approximately 82 kilometers long x 62 kilometers wide. Comparison of the two images shows the berg to have drifted away from the ice shelf edge. The breakup of ice near the shelf edge, in the area surrounding B-22, is also visible in the later image.  These natural-color images were acquired during Terra orbits 11843 and 12047, respectively. At the right-hand edge is Pine Island Bay, where the calving of another large iceberg (B-21) occurred in November 2001. B-21 subsequently split into two smaller bergs, both of which are visible to the right of B-22.  http://photojournal.jpl.nasa.gov/catalog/PIA03700
Popular Image Categories
Popular Video Categories