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Whisk broom scanners have the effect of stopping the scan, and focusing the detector on one part of the swath width. Because the detector is only focused on a subsection of the full swath at any time, it typically has a higher resolution than a push broom design for the same size of scan swath.
A push broom scanner can gather more light than a whisk broom scanner because it looks at a particular area for a longer time, like a long exposure on a camera. One drawback of push broom sensors is the varying sensitivity of the individual detectors.
There are push broom scanners and the related whisk broom scanners (spatial scanning), which read images over time, band sequential scanners (spectral scanning), which acquire images of an area at different wavelengths, and snapshot hyperspectral imagers, which uses a staring array to generate an image in an instant.
Cob brooms are used to clean webs from high areas and were historically made with round brushes. [19] Whisk brooms use bristles that are shorter and finer than other brooms. [18] Rubber brooms were created in the early 20th century to prevent the debris raised when sweeping with straw brooms. [20]
The Super Bowl is the smorgasbord of television events. Offering something for everyone, fans can shop from home, watch commercials, enjoy a football game, consume countless foods and drinks ...
The pilot of the passenger plane that hit a military chopper and crashed in the Potomac River this week may have attempted a last second move to evade the collision, NTSB said at a news conference.
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