Results 21 to 30 of about 57,702 (239)

Reduction of Spectral Radiance Reflectance During the Annular Solar Eclipse of 21 June 2020 Observed by EPIC

Frontiers in Remote Sensing, 2022
The annular solar eclipse on 21 June 2020 passed over desert areas (parts of Central and Eastern Africa, the southern Arabian Peninsula), partly cloudy regions (parts of South Asia and the Himalayas), and the mostly cloudy region in East Asia.
Guoyong Wen, Guoyong Wen, Alexander Marshak, Jay Herman, Jay Herman, Dong Wu   +5 more
doaj   +1 more source

Structure and Dynamics of the 13/14 November 2012 Eclipse White-Light Corona [PDF]

, 2014
Continuing our series of observations of the motion and dynamics of the solar corona over the solar-activity cycle, we observed the corona from sites in Queensland, Australia, during the 13 (UT)/14 (local time) November 2012 total solar eclipse.
Babcock, Bryce A., Dantowitz, Ronald F., Davis, Allen B., Gaintatzis, Pavlos, Lu, Muzhou, Pasachoff, Jay M., Rusin, Vojtech, Saniga, Metod, Seaton, Daniel B., Seiradakis, John H., Shiota, Kazuo, Voulgaris, Aristeidis   +11 more
core   +3 more sources

Fused Ring Engineering Induced Topology Control in Covalent Organic Frameworks: Unlocking Promoted Photocatalytic H2O2 Production and Selective Methane Oxidation

Angewandte Chemie, EarlyView.
By modulating the topological structures of two N‐heterocycle‐based covalent organic frameworks, Phen‐TTA with a kgd‐v topology exhibits narrower optical bandgap, lower exciton binding energy, and faster charge‐carrier kinetics compared to O‐TTA with an hcb topology.
Lei Wang, Zhipeng Xie, Xinyi Zeng, Hetao Xu, Mingyue Wang, Jie Yang, Chao Lin, Wandong Xing, Zhengxiao Guo, Xiong Chen   +9 more
wiley   +2 more sources

Acute Solar Retinopathy

Delhi Journal of Ophthalmology, 2013
Solar observation and eye damage is known for centuries. Unprotected eclipse viewing is the leading cause of solar retinopathy. Inspite of using commercially available certified solar filters, use of binoculars, exposed photographic film and X-ray film ...
Shikha Baisakhiya, Mridu Chaudhry, Prafulla Manjhi, Meenu Babber, Chandan Mehta   +4 more
doaj   +1 more source

Controlling Near‐Infrared Fluorescence‐to‐Phosphorescence Ratios and Triplet Lifetimes in Rhodium(I) Dimers via Primary and Secondary Coordination Sphere Effects

Angewandte Chemie, EarlyView.
RhI dimers with bridging aryl isocyanide and di‐phosphine ligands show NIR‐I or NIR‐II fluorescence/phosphorescence, depending on the ligands and conformational rigidity at the Rh2 core. Rh‐Rh interactions can be tuned by peripheral modification of the aryl isocyanide ligand, resulting in a rigid Rh2 core and improved photophysical properties ...
Vanitha R. Naina, Giacomo Morselli, Alessandro Prescimone, Daniel Häussinger, Oliver S. Wenger   +4 more
wiley   +2 more sources

An empirical study of near-surface air temperature time lags and delay function during the longest total solar eclipse of the 21st century at Tianhuangping (Zhejiang), China, under cloudy conditions

Meteorologische Zeitschrift, 2022
Among the different ways that the solar heating of the Earth's surface can be interrupted, the most impressive is by a solar eclipse. While the solar radiation drops rapidly, the near-surface air temperature responds more gradually, typically reaching a ...
Marcos A. Peñaloza-Murillo, Michael T. Roman, Jay M. Pasachoff, Abouazza Elmhamdi   +3 more
doaj   +1 more source

Ionospheric measurements of relative coronal brightness during the total solar eclipses of 11 August, 1999 and 9 July, 1945 [PDF]

Annales Geophysicae, 2000
Swept-frequency (1-10 MHz) ionosonde measurements were made at Helston, Cornwall (50°06'N, 5°18'W) during the total solar eclipse on August 11, 1999. Soundings were made every three minutes.
C. J. Davis, C. J. Davis, M. Lockwood, M. Lockwood, S. A. Bell, S. A. Bell, J. A. Smith, J. A. Smith, E. M. Clarke, E. M. Clarke   +9 more
doaj   +1 more source

High-accuracy polarization measurements of the white-light corona during the 2023 total solar eclipse

Frontiers in Astronomy and Space Sciences
This study measured the polarization of the white-light corona during the total solar eclipse on 20 April 2023, which occurred under high solar activity.
Yoichiro Hanaoka, Yoichiro Hanaoka, Yoshiaki Sakai, Yoshiaki Sakai, Yukio Masuda   +4 more
doaj   +1 more source

The Great Reduction of Equatorial Electrojet During the Solar Eclipse on 14 December 2020

Space Weather, 2022
The solar eclipse has a great influence on the variability of the ionosphere because of the obscuration of solar radiation. Using the equatorial electrojet (EEJ) and plasma measurements from Swarm, zonal winds from the Michelson Interferometer for Global
Kedeng Zhang, Hui Wang
doaj   +1 more source

Precise Measurement of Gravity Variations During a Total Solar Eclipse

, 2010
The variations of gravity were measured with a high precision LaCoste-Romberg D gravimeter during a total solar eclipse to investigate the effect of solar eclipse on the gravitational field.
C. S. Unnikrishnan, Chang-chai Hua, Chuan-zhen Wu, E. J. Saxl, E. Podkletnov, G. Modanese, G. T. Gillies, Hong-chen Liu, Hong-gang Guo, Qian-shen Wang, T. VanFlandern, V. Desabbata, Xin-she Yang, Y. C. Liu   +13 more
core   +1 more source