scholarly journals Work of Art of the Han Dynasty Unearthed in China and Observations of Solar Phenomena

1987 ◽  
Vol 91 ◽  
pp. 51-56
Author(s):  
Xu Zhen-tao
Keyword(s):  
Solar Activity ◽  
Han Dynasty ◽  
The Sun ◽  
Work Of Art ◽  
Limited Knowledge ◽  
Works Of Art ◽  
The Everyday ◽  
Ancient Times ◽  
Solar Eclipses

In Chinese ancient times the Sun worship was in vogue. Mainly there were two sorts of the worship rites: 1) for rising and setting Sun; 2) for solar eclipses. Many evidences for Sun worship have been found in Chinese ancient books and bone inscriptions (Xu Zhentao et al.1985).The everyday worship to the Sun certainly caused spontaneous observations for solar phenomena. Since the ancients only had a limited knowledge they could not understand what were these phenomena and they, however, created many wonderful myths to describe them. These myths about Solar phenomena have vividly been expressed in the works of art of the Han Dynasty recently unearthed. So analysing the works of art we may trace the original phenomena of solar activity.

Astral Sciences in Ancient China

2018 ◽  
pp. 128-144
Author(s):  
Xu Fengxian
Keyword(s):  
Empty Space ◽  
Han Dynasty ◽  
The Sun ◽  
Space Theory ◽  
Ancient China ◽  
Star Catalogue ◽  
The Earth ◽  
The People ◽  
Solar Eclipses ◽  
Celestial Sphere

The chapter studies ancient Chinese astronomy, which focused on computing and predicting the movements of the heavens (天 tian), the sun, moon, stars, and asterisms, which was the duty of the rulers, in order that the people be well-regulated. Heavenly bodies were allocated to terrestrial zones, especially 28 constellations roughly along the equator or the ecliptic, the seven stars of the Big Dipper (regarded as the carriage of heaven), and the five planets. Unusual celestial phenomena were recorded, such as solar eclipses, comets, and meteorites. The 盖天 gai tian theory (celestial dome theory), the 浑天 hun tian Theory (celestial sphere theory) and the 宣夜 xuan ye theory (infinite empty space theory) were the three primary theories of the structure of the heaven and the earth, in the Han dynasty (202 bce—220 ce). The earliest extant Chinese star catalogue of the whole sky was composed in the 1st century bce, and the definitive constellation system of 283 constellations, 1464 or 1465 stars was composed in the 3rd century ce.

Kaki Manusia Sebagai Objek Estetik Penciptaan Fotografi Seni

2014 ◽  
Author(s):  
Dira Herawati
Keyword(s):  
Social Situation ◽  
Work Of Art ◽  
Social Phenomena ◽  
Aesthetic Object ◽  
Human Foot ◽  
Works Of Art ◽  
The Social ◽  
The Creation ◽  
Art Photography ◽  
Artistic Images

Accountability report is a written description of creative experiences as an artist or a photographer of aesthetic exploration efforts on the image and the idea of a human as a basic stimulant for the creation of works of art photography. Human foot as an aesthetic object is a problem that relates to various phenomena that occur in the social sphere, culture and politics in Indonesia today. Based on these linkages, human feet would be formulated as an image that has a value, and the impression of eating alone in the creation of a work of art photography. Hence the creation of this art photography entitled The Human Foots as Aesthetic Object  Creation of Art Photography. Starting from this background, then the legs as an option object art photography, will be managed creatively and systematically through a phases of creation. The creation phases consist of: (1) the exploration of discourse, (2) artistic exploration, (3) the stage of elaboration photographic, (4) the synthesis phase, and (5) the stage of completion. Methodically, through the phases of the creative process  through which this can then be formulated in various forms of artistic image of a human foot. The various forms of artistic images generated from the foots of its creation process, can be summed up as an object of aesthetic order 160 Kaki Manusia Sebagai Objek Estetik Penciptaan Fotografi Seni in the photographic works of art. It is specifically characterized by the formation of ‘imaging the other’ behind the image seen with legs visible, as well as of the various forms of ‘new image’ as a result of an artistic exploration of the common image of legs visible. In general, the whole image of the foot in a photographic work of art has a reflective relationship with the social situation, cultures, and politics that developed in Indonesian society, by value, meaning and impression that it contains.Keywords: human foots, aestheti,; social phenomena, art photography, images

scholarly journals Closing up onto our sun: solar imaging

2020 ◽  
Vol 240 ◽  
pp. 07011
Author(s):  
Kushagra Shrivastava ◽  
Keith Wen Kai Chia ◽  
Kang Jun Wong ◽  
Alfred Yong Liang Tan ◽  
Hwee Tiang Ning
Keyword(s):  
Solar Activity ◽  
The Sun ◽  
Research Needs ◽  
Large Numbers ◽  
Wide Range ◽  
Future Science ◽  
Insight Into ◽  
Term Data ◽  
Made In

Solar activity research provides insight into the Sun’s past, future (Science Daily, 2018). The solar activity includes observations of large numbers of intense sunspots, flares, and other phenomena; and demands a wide range of techniques and measurements on the observations. This research needs long term data collection before critical analyses can occur, to generate meaningful learning and knowledge. In this project, we will use solar imaging to make observations of solar activity, and take our baby steps to make contributions in citizen science. Observations will be made in 3 wavelengths to gain a more thorough analysis by looking at different perspectives of the Sun, namely H-Alpha, Calcium-K, and white light.

scholarly journals The influence of solar variability and the quasi-biennial oscillation on sea level pressure

2010 ◽  
Vol 10 (12) ◽  
pp. 30453-30471
Author(s):  
I. Roy ◽  
J. D. Haigh
Keyword(s):  
Solar Activity ◽  
Sea Level ◽  
The State ◽  
Solar Variability ◽  
The Sun ◽  
High Latitudes ◽  
Quasi Biennial Oscillation ◽  
Sea Level Pressure ◽  
Level Pressure ◽  
Biennial Oscillation

Abstract. We investigate an apparent inconsistency between two published results concerning the temperature of the winter polar stratosphere and its dependence on the state of the Sun and the phase of the Quasi-Biennial Oscillation (QBO). We find that the differences can be explained by the use of the authors of different pressure levels to define the phase of the QBO. We identify QBO and solar cycle signals in sea level pressure (SLP) data using a multiple linear regression approach. First we used a standard QBO time series dating back to 1953. In the SLP observations dating back to that time we find at high latitudes that individually the solar and QBO signals are weak but that a temporal index representing the combined effects of the Sun and the QBO shows a significant signal. This is such that combinations of low solar activity with westerly QBO and high solar activity with easterly QBO are both associated with a strengthening in the polar modes; while the opposite combinations coincide with a weakening. This result is true irrespective of the choice of QBO pressure level. By employing a QBO dataset reconstructed back to 1900, we extended the analysis and also find a robust signal in the surface SAM; though weaker for surface NAM. Our results suggest that solar variability, modulated by the phase of QBO, influences zonal mean temperatures at high latitudes in the lower stratosphere and subsequently affect sea level pressure near the poles. Thus a knowledge of the state of the Sun, and the phase of the QBO might be useful in surface climate prediction.

Possible Influence of the Solar Eclipse on the Global Geomagnetic Field

2017 ◽  
Vol 13 (S335) ◽  
pp. 167-170
Author(s):  
Jung-Hee Kim ◽  
Heon-Young Chang
Keyword(s):  
Solar Activity ◽  
Solar Cycle ◽  
Solar Eclipse ◽  
Geomagnetic Field ◽  
Geomagnetic Observatory ◽  
Geomagnetic Disturbances ◽  
Solar Eclipses ◽  
A Site

AbstractWe investigate the geomagnetic field variations recorded by INTERMAGNET geomagnetic observatories. We confirm that the effect of solar eclipse can be seen over an interval of 180 minutes centered at the time of maximum eclipse on a site of a geomagnetic observatory. It is found that the effect of the solar eclipse on the geomagnetic field becomes conspicuous as the magnitude of a solar eclipse becomes larger. The effect of solar eclipses is more evident in the second half of the path of Moon’s shadow. We also find that the effect can be overwhelmed, more sensitively by geomagnetic disturbances than by solar activity of solar cycle.

Addendum 2020 to ‘Measurement of the Earth’s rotation: 720 BC to AD 2015’

2021 ◽  
Vol 477 (2246) ◽  
pp. 20200776
Author(s):  
L. V. Morrison ◽  
F. R. Stephenson ◽  
C. Y. Hohenkerk ◽  
M. Zawilski
Keyword(s):  
Angular Momentum ◽  
Earth’S Rotation ◽  
The Sun ◽  
Earth's Rotation ◽  
Moon System ◽  
Link Type ◽  
The Earth ◽  
Solar Eclipses ◽  
Rotation Of The Earth

Historical reports of solar eclipses are added to our previous dataset (Stephenson et al. 2016 Proc. R. Soc. A 472 , 20160404 ( doi:10.1098/rspa.2016.0404 )) in order to refine our determination of centennial and longer-term changes since 720 BC in the rate of rotation of the Earth. The revised observed deceleration is −4.59 ± 0.08 × 10 −22  rad s −2 . By comparison the predicted tidal deceleration based on the conservation of angular momentum in the Sun–Earth–Moon system is −6.39 ± 0.03 × 10 −22  rad s −2 . These signify a mean accelerative component of +1.8 ± 0.1 × 10 −22  rad s −2 . There is also evidence of an oscillatory variation in the rate with a period of about 14 centuries.

Landart plein air “Between Sand and Foam” – Between the Everyday and the Ephemera

2021 ◽  
Vol 5 (2) ◽  
Author(s):  
Bissera Valeva ◽  
Keyword(s):  
Financial Support ◽  
High Tide ◽  
Research Fund ◽  
Work Of Art ◽  
Art Form ◽  
The Everyday ◽  
Traditional Artists

The text focuses on the realization of the plein air as a part of a larger project (ARTguments) implemented with the financial support of the Research Fund of Sofia University. The art form “landart” was chosen not by chance. It is characteristic for artists to “argue”, to transform their ephemeral visual sensations into art installations – materialized in nature, digitally stored emotional provocations, which also rely on the “co-authorship” of the elements. The pictorial focus is on “unnecessary”, discarded, marginalized objects, without utilitarian application, but discovered and recognized as necessary in the process of creating a work of art. This is the so called by Juri Lotman process of renaming “external” to the artistic installation elements in which they “invade” from the outside world implanting themselves in the imaginary space of the visual work. The art event aims to unite different artists as a way of expression, to gather and impose diverse, even dissimilar concepts.The forum realizes conceptual works by traditional artists, materializes the artistic reaction viewed from different angles, meets a random audience with non-randomly created installations, and last but not least, embodies different works as different visual emotion. The concept of the plein air is subordinated to the philosophy of Khalil Gibran and in particular to his sentences from the eponymous edition „Sand and Foam“:“I am forever walking upon these shores, Between the sand and the foam, The high tide will erase my foot prints,And the wind will blow away the foam...”

ESTABLISHING SOLAR ACTIVITY TREND FOR SOLAR CYCLES 21 – 24

2021 ◽  
Vol 44 ◽  
pp. 100-106
Author(s):  
A.K. Singh ◽  
◽  
A. Bhargawa ◽  
Keyword(s):  
Solar Activity ◽  
Solar Cycle ◽  
Sunspot Number ◽  
Cosmic Ray ◽  
Occurrence Rate ◽  
The Sun ◽  
Solar Cycles ◽  
Lyman Alpha ◽  
Rate Versus ◽  
Alpha Index

Solar-terrestrial environment is manifested primarily by the physical conditions of solar interior, solar atmosphere and eruptive solar plasma. Each parameter gives unique information about the Sun and its activity according to its defined characteristics. Hence the variability of solar parameters is of interest from the point of view of plasma dynamics on the Sun and in the interplanetary space as well as for the solar-terrestrial physics. In this study, we have analysed various solar transients and parameters to establish the recent trends of solar activity during solar cycles 21, 22, 23 and 24. The correlation coefficients of linear regression of F10.7 cm index, Lyman alpha index, Mg II index, cosmic ray intensity, number of M & X class flares and coronal mass ejections (CMEs) occurrence rate versus sunspot number was examined for last four solar cycles. A running cross-correlation method has been used to study the momentary relationship among the above mentioned solar activity parameters. Solar cycle 21 witnessed the highest value of correlation for F10.7 cm index, Lyman alpha index and number of M-class and X-class flares versus sunspot number among all the considered solar cycles which were 0.979, 0.935 and 0.964 respectively. Solar cycle 22 recorded the highest correlation in case of Mg II index, Ap index and CMEs occurrence rate versus sunspot number among all the considered solar cycles (0.964, 0.384 and 0.972 respectively). Solar cycle 23 and 24 did not witness any highest correlation compared to solar cycle 21 and 22. Further the record values (highest value compared to other solar three cycles) of each solar activity parameters for each of the four solar cycles have been studied. Here solar cycle 24 has no record text at all, this simply indicating that this cycle was a weakest cycle compared to the three previous ones. We have concluded that in every domain solar 24 was weaker to its three predecessors.

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