For whiter whites, use beetles
نویسندگان
چکیده
منابع مشابه
Geoengineering: Whiter skies?
[1] One proposed side effect of geoengineering with stratospheric sulfate aerosols is sky whitening during the day and afterglows near sunset, as is seen after large volcanic eruptions. Sulfate aerosols in the stratosphere would increase diffuse light received at the surface, but with a non-uniform spectral distribution. We use a radiative transfer model to calculate spectral irradiance for ide...
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When the moon is absent from the night sky, stars remain as celestial visual cues. Nonetheless, only birds, seals, and humans are known to use stars for orientation. African ball-rolling dung beetles exploit the sun, the moon, and the celestial polarization pattern to move along straight paths, away from the intense competition at the dung pile. Even on clear moonless nights, many beetles still...
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Objective—The study objective was to estimate the prevalence and correlates of antidepressant use by black and white Americans. Methods—Data from the Collaborative Psychiatric Epidemiology Surveys (CPES) were analyzed to calculate nationally representative estimates of antidepressant use by black and white Americans. Setting—The 48 coterminous United States was the setting. Participants—Househo...
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abstract nowadays, the science of decision making has been paid to more attention due to the complexity of the problems of suppliers selection. as known, one of the efficient tools in economic and human resources development is the extension of communication networks in developing countries. so, the proper selection of suppliers of tc equipments is of concern very much. in this study, a ...
15 صفحه اولDiurnal dung beetles use the intensity gradient and the polarization pattern of the sky for orientation.
To escape competition at the dung pile, a ball-rolling dung beetle forms a piece of dung into a ball and rolls it away. To ensure their efficient escape from the dung pile, beetles rely on a 'celestial compass' to move along a straight path. Here, we analyzed the reliability of different skylight cues for this compass and found that dung beetles rely not only on the sun but also on the skylight...
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ژورنال
عنوان ژورنال: Materials Today
سال: 2007
ISSN: 1369-7021
DOI: 10.1016/s1369-7021(07)70014-7