Results 21 to 30 of about 160 (131)
Vestnik KRAUNC: Fiziko-Matematičeskie Nauki, 2022 Internal gravitational waves are space-time fluctuations of air masses in the atmosphere. In addition to the longitudinal component, they also have a transverse component, which distinguishes them from ordinary acoustic waves.
Mordosova, O.V., Koltovskoi, I.I.
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Energies, 2020 The article presents the results of the studies concerning the influence of a light source installed in luminaire of opal sphere type on the light pollution effect of the night sky.
Przemyslaw Tabaka, Pawel Rozga
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Outcomes from the IYL2015 Quality Lighting Teaching Kit Program: Reaching for the Stars [PDF]
EPJ Web of Conferences, 2019 Poor quality lighting not only impedes astronomy research and our right to see a starry night sky, but creates safety issues, affects human circadian sensitivities, disrupts ecosystems, and wastes billions of dollars/year in energy consumption.
Walker Constance, Pompea Stephen
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Nature, 1908 THESE phenomena on about June 30 and July 1, referred to in my letter (NATURE, July 9, p. 221), I termed displays of Aurorae, and was prompted to apply that title by the descriptions given in some of the London newspapers, which stated that well-defined streamers had been observed from the metropolis.
openaire +2 more sources
Sensitivity of CCD matrices with electronic multiplication
Tekhnologiya i Konstruirovanie v Elektronnoi Apparature, 2018 The sensitivity and basic electrical characteristics of the developed direct illumination matrices with charge-coupled devices and electronic multiplication were investigated at room temperatures and low illumination. Photomatrices of 576×288 and 640×512
F. F. Sizov +5 more
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Artificial light at night is a top predictor of bird migration stopover density
Nature Communications, 2023 As billions of nocturnal avian migrants traverse North America, twice a year they must contend with landscape changes driven by natural and anthropogenic forces, including the rapid growth of the artificial glow of the night sky.
Kyle G. Horton +9 more
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The red sky enigma over Svalbard in December 2002: a model using polar stratospheric clouds [PDF]
Annales Geophysicae, 2005 An anomalous red glow due to scattered sunlight was observed at Longyearbyen (78° N, 15° E) on 6 December 2002 from 07:30 UT to 13:30 UT when the solar zenith angle varied between 100.7° and 104°.
N. D. Lloyd +4 more
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Cloud coverage acts as an amplifier for ecological light pollution in urban ecosystems.
PLoS ONE, 2011 The diurnal cycle of light and dark is one of the strongest environmental factors for life on Earth. Many species in both terrestrial and aquatic ecosystems use the level of ambient light to regulate their metabolism, growth, and behavior.
Christopher C M Kyba +3 more
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Enhancement of Dissymmetry Factors Through Axial Elongation of Hetero[n]helicenes
Angewandte Chemie, EarlyView.A benzofuran scaffolding strategy enables the synthesis of hetero[9]‐, [12]‐, and [15]helicenes. Structural and chiroptical analyses demonstrate that systematic axial elongation increases helical distortion and significantly amplifies luminescence dissymmetry.
Jeppe S. Mogensen +7 more
wiley +2 more sources
Angewandte Chemie, EarlyView.Dibenzo[b,d]selenophene (DBSe) π‐core fusion enables rapid triplet–singlet interconversion while preserving the narrowband emission features of multi‐resonance thermally activated delayed fluorescence (MR‐TADF) luminogens. Combined with peripheral donor engineering, this strategy enables systematic emission tuning from green to red, leading to highly ...
Jingpeng Zhang +4 more
wiley +2 more sources