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9 Cards in this Set
- Front
- Back
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Aristotle on Light
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- light as quality, not an actual substance
- Potential for transparency |
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Newton on Light
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Dispersed light into rainbow w/ a prism; recombined it w/ a second one.
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History of Imaging
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Germans invent stereoscope (1830)-->use in Civil War w/ captive balloons-->kites and pigeons used as platforms (1900s)-->film introduced-->Wright photos from airplane (1909)
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Use in WWI, WWII
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WWI - photo interpreters
Commercial survey companies expand (1920s, 30s) WW2 - IR to identify camouflaged military equipment |
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High Flight
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First space photos from rockets (1943)
U-2: high-flying stable platform Most earth objects don't emit near IR radiation, but may strongly reflect it |
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Earth Orbiting Satellites
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Sputnik I (1957)
Television IR Observational Satellite (TIROS, 1960s) CIA's CORONA |
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Blackbird
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SR-71 as strategic reconnaissance aircraft
Mach 3 sensors |
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Satellites for Civilians
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Digital imaging system & processing: sharpen images, overlay ones taken at diff times
Earth Resources Tech Satellite (ERTS-I, later LANDSAT-1-5) for non-military users |
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Other Satellites
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8x: details as small as 6 in.
RussianKVR1000 (1 m, online) Landsat-7 (online) IKONOS (1 meter) QuickBird (61 cm for BW, 8-ft for color) |
