单词 | reflectance |
例句 | Although Galileo attempted to ascertain their composition using reflectance spectroscopy, it was unsuccessful. The chance that there is life on Europa just went up a little bit more 2022-10-13T04:00:00Z The techniques included X-ray fluorescence imaging spectroscopy and reflectance hyperspectral imaging, which uses a light-dispersing spectrometer to collect and process information from across the electromagnetic spectrum. National Gallery confirms one of its Vermeers is actually not a Vermeer 2022-10-07T04:00:00Z That same process also changes the reflectance of the surface, exposing more dark ground and evaporating more water. California fires are burning at high elevations than ever, creating new dangers 2021-09-14T04:00:00Z Dr. Delaney’s specialty, reflectance imaging spectroscopy, is one of the newer methods, taking advantage of the fact that different molecules absorb light at different wavelengths. Peering Under Vermeers Without Peeling Off the Paint 2021-06-28T04:00:00Z "It's a big deal, because every 1% of reflectance you get translates to 10 watts per metre squared less heat from the Sun," he explained. 'Whitest ever' paint reflects 98% of sunlight 2021-04-16T04:00:00Z Throughout the day, I was photographing: joy, mourning, and reflectance; and at the end of the night, I was photographing anger, frustration, and turmoil. Capturing the cry for change: photographers on the BLM protests 2020-06-12T04:00:00Z "If so, then Venus is volcanically active today because our experimental results show that the emissivity/reflectance signature of olivine should be obscured by oxide coatings within months to years." Venus may be the only other planet with active volcanoes 2020-01-04T05:00:00Z Consequently, the reflectance of polluted clouds is greater than that of unpolluted ones1. Weak sensitivity of cloud water to aerosols 2019-07-30T04:00:00Z Back at the National Gallery of Art, hyperspectral reflectance and X-ray fluorescence scans of the Vermeer paintings helped identify pigments and provided insights into how Vermeer worked. Peering Under Vermeers Without Peeling Off the Paint 2021-06-28T04:00:00Z As a result, the vegetation-covered surface of the Earth exhibits a sharp spectral edge in its reflectance as a function of wavelength. In Search of Green Dwarfs 2019-06-03T04:00:00Z The technique, called reflectance hyperspectral imaging, allows scientists to identify minerals based on patterns of dark lines in the spectrum. In Picasso’s Blue Period, Scanners Find Secrets He Painted Over 2018-02-20T05:00:00Z At longer wavelengths, the reflectance jumps to almost 50%, and the brightness of the spectrum rises abruptly, like a cliff. Earth-sized alien worlds are out there. Now, astronomers are figuring out how to detect life on them 2017-11-01T04:00:00Z As a result of the aerosol emissions of the early twenty-first century, as opposed to pre-industrial conditions, this enhanced reflectance generates a substantial cooling effect on Earth’s climate6. Weak sensitivity of cloud water to aerosols 2019-07-30T04:00:00Z For each point, the camera gathers detailed reflectance information across a range of wavelengths, generating gigabytes of data during an hourlong scan. Peering Under Vermeers Without Peeling Off the Paint 2021-06-28T04:00:00Z Her team, including African researchers, used a light meter to measure skin reflectance in 2092 people in Ethiopia, Tanzania, and Botswana. New gene variants reveal the evolution of human skin color 2017-10-12T04:00:00Z In tests, the material resulted in less than 1 percent reflectance. Learning from Nature: Moth Eyes Inspire Nonreflective Screen Coating 2017-07-26T04:00:00Z So Hegde and his colleagues are compiling a database of reflectance spectra for different types of microbes. Earth-sized alien worlds are out there. Now, astronomers are figuring out how to detect life on them 2017-11-01T04:00:00Z This effect slightly reduces the overall aerosol-induced increase in cloud reflectance. Weak sensitivity of cloud water to aerosols 2019-07-30T04:00:00Z NASA’s Mars Reconnaissance Orbiter and the Curiosity and Perseverance rovers use reflectance imaging spectroscopy to identify minerals on the red planet. Peering Under Vermeers Without Peeling Off the Paint 2021-06-28T04:00:00Z The researchers asked the computer to consider dozens of features–hue, saturation, even light reflectance–to determine whether clumps of pixels were trees as opposed to roads, buildings, or rivers. Quantum computer learns to ‘see’ trees 2017-03-08T05:00:00Z A low-intensity infrared laser—one that wouldn't risk stressing the diamonds—revealed a strong spike in the sample's reflectance, as expected from a metal. Diamond vise turns hydrogen into a metal, potentially ending 80 year quest 2017-01-26T05:00:00Z Known as the "red edge," it is the dramatic change in the reflectance of green plants at a wavelength of about 720 nanometers. Earth-sized alien worlds are out there. Now, astronomers are figuring out how to detect life on them 2017-11-01T04:00:00Z According to the authors, this “context-dependent reflectance strategy” is actually more effective than, say, invisibility cloaks, which “camouflage well for specific tasks but suffer limitations in more complex natural environments.” Sneaking with the fishes 2015-12-10T05:00:00Z Clarke agrees, adding that he thinks the findings are especially noteworthy because plant-bat relationships that include sound reflectance are "relatively rare." This carnivorous plant is shaped to help bats find it, so bats can sleep and poop inside 2015-07-09T04:00:00Z So, I was curious about whether turkeys could see changes in feather reflectance, the colors coming off the feathers, when they are parasitized, that we can't notice. Best of Thanksgiving 1: Let's Talk Turkey! 2014-11-27T05:00:00Z The researchers assessed pigmentation by using a spectrophotometer, which measures the reflectance of skin, and found that variants of a gene known as OCA2 lightened skin colour10. Skin colour: No hiding in the dark : Nature : Nature Publishing Group 2014-11-18T05:00:00Z On the basis of our three-dimensional simulations, which used a perfectly uniform population of cubes, we would expect a small reflectance even for such low surface coverage. Controlled-reflectance surfaces with film-coupled colloidal nanoantennas 2012-12-11T21:22:39.403Z “The UV reflectance of the crown plumage of female blue tits significantly affected male investment in feeding nestlings,” explain the authors. Prettier tits (the bird!) get more help from their partners 2012-06-25T17:45:05.873Z The modeled reflectance is shown as the dashed black line. [Report] Peak External Photocurrent Quantum Efficiency Exceeding 100% via MEG in a Quantum Dot Solar Cell 2011-12-15T18:55:58.470Z The Herschel data demand an extremely high reflectance, or albedo, of greater than 90 percent, indicating that Makemake is extremely icy. Hot and Cold: Dwarf Planet Makemake Could Have Extreme Temperatures Side by Side 2011-10-06T11:45:06.110Z I reviewed for them the main excitement of the evening, briefly filling their inquiries and in return receiving a small dose of chit-chat for my own reflectance. Through these Eyes The courageous struggle to find meaning in a life stressed with cancer 2011-08-14T02:00:18.947Z This variation contributes to a broader and shallower absorption dip in the reflectance. Controlled-reflectance surfaces with film-coupled colloidal nanoantennas 2012-12-11T21:22:39.403Z The impacts also change the colour, reflectance and chemistry of the surface over time. Messenger spies Mercury in detail 2011-06-16T19:16:39Z This change in reflectance contributes to what's called "albedo feedback," one of the main positive feedback mechanisms adding fuel to the planet's warming trend. Shrinking Snow and Ice Cover Intensify Global Warming 2011-01-20T16:16:00Z "Their lack of spots and the high reflectance of the face are indicative of enhancement for signalling," explained lead researcher Gary Bortolotti. Whiter snowy owls dazzle rivals 2011-01-11T09:40:47Z Moreover, one who accepts treatment without a hope for a cure dies in pain multiplied by the lack of peace which reflectance would have brought. Through these Eyes The courageous struggle to find meaning in a life stressed with cancer 2011-08-14T02:00:18.947Z A reflectance of less than 7% is observed for normal incidence at 637 nm from samples with 17.1% surface coverage, further demonstrating the ease and extent to which the reflectance can be controlled. Controlled-reflectance surfaces with film-coupled colloidal nanoantennas 2012-12-11T21:22:39.403Z Using a reflectance spectrophotometer and computer software, they then calculated the glossiness of the bird's feathers in each photograph. Glossy male birds are more 'sexy' 2010-03-23T14:59:00Z To enhance the light absorbed within a medium, both the reflectance and the transmittance of the medium must be minimized. Controlled-reflectance surfaces with film-coupled colloidal nanoantennas 2012-12-11T21:22:39.403Z Although any opaque material, such as a metal, can essentially eliminate transmittance, eliminating the reflectance is more difficult. Controlled-reflectance surfaces with film-coupled colloidal nanoantennas 2012-12-11T21:22:39.403Z By combining different types of metamaterial elements together into a single composite, more complicated reflectance spectra can be engineered, achieving the level of control needed in certain spectroscopy and energy-harvesting applications. Controlled-reflectance surfaces with film-coupled colloidal nanoantennas 2012-12-11T21:22:39.403Z In all of the presented data, the reflectivity of the cube-covered film is normalized by the reflectance spectrum of the bare gold film. Controlled-reflectance surfaces with film-coupled colloidal nanoantennas 2012-12-11T21:22:39.403Z By contrast, the bottom-up, colloidal approach described here is simple, rapid, inexpensive and easily scalable, and could lead to the eventual cost-effective manufacture of large-area metasurfaces with controlled reflectance. Controlled-reflectance surfaces with film-coupled colloidal nanoantennas 2012-12-11T21:22:39.403Z |
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