Results 1 to 10 of about 1,224,406 (321)
Nature, 1870 WE have in the work before us a proof that a very interesting and readable volume may be produced, although the hypothesis which has called it into being may be one with which we do not agree. Mr. Williams discusses at great length the very perplexing question of the sun's fuel, nevertheless we do not think that his hypothesis is an improvement upon ...
Balfour Stewart
openalex +5 more sources
Monochromatic X-Ray Imagers of the Sun Based on the Bragg Crystal Optics
Frontiers in Astronomy and Space Sciences, 2021 Investigations of solar activity require information about plasma in a wide range of temperatures. Generally, researchers require observations from telescopes producing monochromatic images of coronal plasma with cool, warm, and hot temperatures.
Anton A. Reva +5 more
doaj +1 more source
Is the F10.7cm – Sunspot Number relation linear and stable?
Journal of Space Weather and Space Climate, 2021 The F10.7cm radio flux and the Sunspot Number are the most widely used long-term indices of solar activity. They are strongly correlated, which led to the publication of many proxy relations allowing to convert one index onto the other.
Clette Frédéric
doaj +1 more source
Effect of solar flares on 54Mn and 57Co radioactive decay constants performance [PDF]
Nuclear Technology and Radiation Protection, 2021 Changes in radioactive decay rates due to solar flares have attracted increasing scientific attention in recent decades. In previous studies we demonstrated that solar flares cause changes in the decay rate of 241Am, 222Rn, and 232Th. The change
Walg Jonathan +4 more
doaj +1 more source
EXPLORATION OF THE SOLAR DECAMETER RADIO EMISSION WITH THE UTR-2 RADIO TELESCOPE [PDF]
Radio Physics and Radio Astronomy, 2021 Purpose: The overview of the scientifi c papers devoted to the study of the solar decameter radio emission with the world’s largest UTR-2 radio telescope (Ukraine) published for the last 50 years. Design/methodology/approach: The study and analysis of
V. N. Melnik +5 more
doaj +1 more source
What aspects of solar flares can be clarified with mm/submm observations?
Frontiers in Astronomy and Space Sciences, 2022 This paper identifies several unsolved questions about solar flares, which can potentially be answered or at least clarified with mm/submm observations with ALMA.
Gregory D. Fleishman +3 more
doaj +1 more source
Frontiers in Astronomy and Space Sciences, 2022 Solar flares are transient yet dramatic events in the atmosphere of the Sun, during which a vast amount of magnetic energy is liberated. This energy is subsequently transported through the solar atmosphere or into the heliosphere, and together with ...
Graham S. Kerr, Graham S. Kerr
doaj +1 more source
Identification of the Etymon of Indo-European 'Moist', Sinitic 'South', Tibeto-Burman 'Sun, Day, Sky' and Hungarian nap 'Sun, Day' [PDF]
Archaeoastronomy and Ancient Technologies, 2021 Using etymological methods, the present study has identified two Sinitic and Germanic shared (Sino-Germanic) etymologies (etyma):【南, 陰】. These two etyma form a rhyme correspondence.
Gao, J.
doaj +1 more source
The Seasonal Fluctuation of Fatigue in Multiple Sclerosis
Frontiers in Neurology, 2022 BackgroundFatigue is a common symptom in patients with multiple sclerosis. Several studies suggest that outdoor temperature can impact fatigue severity, but a systematic study of seasonal variations is lacking.MethodsFatigue was assessed with the Fatigue
Matthias Grothe +7 more
doaj +1 more source
Influence of cosmic factors on mud volcanic activity of the Earth [PDF]
Геосистемы переходных зон, 2023 In this work, the influence of various cosmic factors (gravitational influence of the Moon and the Sun, solar activity, the Earth’s rotation) on mud volcanic activity was analyzed for the first time. The analysis was carried out mainly on the example of
Gennady V. Ustyugov, Valery V. Ershov
doaj +1 more source