نتایج جستجو برای: solar eclipse

تعداد نتایج: 128228  

Journal: :international journal of environmental research 2009
a. bhatnagar p. sangwan

one of the sacred water tank brahmsarovar, at kurukshetra in india was studied to assess the impact of mass bathing during new moon day (called as amavasya in india) in terms of physico-chemical and biological characteristics. overall water quality index was calculated using online calculator. results have revealed significant (p

Journal: :JAMA ophthalmology 2017
David J Calkins Paul Sternberg

Something is about to happen in Nashville, Tennessee, that has not happened since Andrew Johnson was president of the United States in 1865. The time before that was Christmas Day 1628: the year Charles I of England granted a land charter to the Massachusetts Bay Colony. And the next occurrence will not take place until August 2566, some 549 years hence. You get the picture! On Monday, August 2...

2005
Shu T. Lai

[1] Spacecraft often charge to negative potentials of several kilovolts in eclipse at geosynchronous altitudes. We suggest that optical mirrors at geosynchronous altitudes will charge in sunlight as if in eclipse. Modern mirrors can attain very high reflectance, the reflected light being nearly as intense as the incoming light. With high reflectance, the sunlight photon energy imparted to mirro...

2016
L Barnard A M Portas S L Gray R G Harrison

The National Eclipse Weather Experiment (NEWEx) was a citizen science project designed to assess the effects of the 20 March 2015 partial solar eclipse on the weather over the United Kingdom (UK). NEWEx had two principal objectives: to provide a spatial network of meteorological observations across the UK to aid the investigation of eclipse-induced weather changes, and to develop a nationwide p...

2008
V. Amiridis A. F. Bais

This paper provides the overview of an integrated, multi-disciplinary effort to study the effects of the 29 March 2006 total solar eclipse on the environment, with special focus on the atmosphere. The eclipse has been visible over the Eastern Mediterranean, and on this occasion several research and academic institutes organised co-ordinated experimental campaigns, at different distances from ec...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2008
Constantino Baikouzis Marcelo O Magnasco

Plutarch and Heraclitus believed a certain passage in the 20th book of the Odyssey ("Theoclymenus's prophecy") to be a poetic description of a total solar eclipse. In the late 1920s, Schoch and Neugebauer computed that the solar eclipse of 16 April 1178 B.C.E. was total over the Ionian Islands and was the only suitable eclipse in more than a century to agree with classical estimates of the deca...

Journal: :Monthly Notices of the Royal Astronomical Society 1921

2017
Ahmed Lotfy Wagdy R. Anis M. A. Atalla Joseph V. M. Halim M. Abouelatta

This paper presents an optimum design of a photovoltaic (PV) power system for the satellite market using high efficiency solar cells. This is to enhance the power capabilities of the satellite solar arrays without extra challenges in area, weight and budget constraints. In this way, the designed power system can efficiently fulfill the power requirements of the satellite subsystems, either in d...

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