Astronomers take multiple photos using different filters that collect light from the entire range of the spectrum, including areas undetectable to the human eye.
An Ogawa badge is a passive sampler that collects nitrogen oxides through diffusion on a pre-coated filter [ 19, 24].
It utilizes Bayer color filter arrays (CFA) that collect red, green, and blue (RGB) values from a grid-like structure.
The Purdue researchers have also applied the coating to filters or membranes that collect beads of oil suspended in water, but let the water itself pass through, Dr. Howarter said.
The LEED gold-rated building, featuring a roof that resembles a "sculptured mountain peak," with plantings that collect and filter rainwater, is being built on speculation, said John Smith, vice president of 20Vic, the managing developer.
One method of achieving improved electrical conversion efficiencies in solar power plants is to employ a spectrally selective filter that splits the collected beam into optimised components for two or more spectral receivers.
Field control filters were also placed in some rucksacks and processed along with those that collected flour dust.
The waterless toilet system we created, Loowatt, collects human waste in a sealed filter that can be easily emptied.
It's natural for the person who collects information to filter that data through her own experiences.
Critics said older samplers are of limited use, however, because they rely on air filters that must be manually collected and evaluated by a laboratory, taking as much as 30 hours.
