scholarly journals XXIX.—On the Red Prominences seen during Total Eclipses of the Sun. Part I

1853 ◽  
Vol 20 (3) ◽  
pp. 445-459
Author(s):  
William Swan
Keyword(s):  
The Sun ◽  
The Moon ◽  
Total Eclipse ◽  
Total Phase ◽  
The Subject ◽  
Solar Eclipses

The red prominences seen during total solar eclipses, are conspicuous rose-coloured objects which appear round the dark edge of the moon, as soon as the last rays of the sun have disappeared. In preparing my account of the total eclipse of the 28th July 1851, it was at first my intention to have stated some hypothetical views which I had formed regarding those remarkable objects, and other appearances I had observed during the total phase of the eclipse. I found, however, that the mere description of phenomena extended to so great a length, as to render such a course inexpedient; and I have since delayed resuming the subject, in order that by comparing a number of other observations with my own, I might be enabled, either to confirm or to modify my views.

4. On the Red Prominences seen during Total Eclipses of the Sun. Part I.

1857 ◽  
Vol 3 ◽  
pp. 135-136
Author(s):  
William Swan
Keyword(s):  
The Sun ◽  
The Moon ◽  
Total Phase ◽  
Solar Eclipses ◽  
The Rose

The object of this communication is to discuss the evidence afforded by various observations of the eclipse which occurred on the 28th July 1851, as to the nature of the rose-coloured prominences which are seen round the moon during the total phase of solar eclipses.In order to render the inquiry into the nature of the red prominences as complete as possible, the author has not confined himself to the consideration of such hypotheses only as have been formally stated regarding them; but has also included in his examination such other views as he thought might probably be entertained regarding those remarkable objects.

A Fix by Total Solar Eclipse

1999 ◽  
Vol 52 (2) ◽  
pp. 296-299
Author(s):  
D. H. Sadler
Keyword(s):  
Solar Eclipse ◽  
Total Solar Eclipse ◽  
Maximum Effect ◽  
The Sun ◽  
The Moon ◽  
Short Article ◽  
Total Eclipse ◽  
The Earth ◽  
Total Phase ◽  
February Issue

In anticipation of the TOTAL Solar Eclipse on 11 August 1999 (see the January/February issue of Navigation News), it seemed very appropriate to repeat this short article by one of the Institute's most respected Fellows. It was first published in Vol. VII, October 1954.A TOTAL eclipse of the Sun provides an opportunity, rare though it may be, of obtaining an instantaneous fix from the Sun alone. Eclipses vary greatly in character, in position on the Earth, in the width of the path of totality, in the duration, and also in the direction of the path. However, the shadow of the Moon cast by the Sun is always a right circular cone which, in the case of a total eclipse, intersects the Earth's surface at some point before its vertex. Owing to the motion of the Moon in its orbit round the Earth, the shadow moves at a speed of about 2000 m.p.h. from west to east (it varies considerably according to the distance of the Moon from the Earth). The intersection of this cone with the Earth's surface is an ellipse, which moves over the surface at speeds which are very high when the cone is nearly tangential (i.e. when the Sun's altitude is low) and at speeds as low as about 1000 m.p.h., when the eclipse is central over the equator at noon and the Earth's rotation has its maximum effect. The speed of the shadow is generally low enough to give a position line of considerable accuracy from the observed time of either second or third contacts, that is the beginning or ending of the total phase. An error of 1 second corresponds, in the most favourable case, to about one-third of a mile. The position line is, of course, the portion of the elliptic shadow corresponding to the observed phase and time; these can be precomputed.

In the shadow of the Moon—An informative guide to solar eclipses Totality: Eclipses of the Sun

1991 ◽  
Vol 29 (5) ◽  
pp. 319-319
Author(s):  
Mark Littman ◽  
Ken Willcox ◽  
Edward Pascuzzi
Keyword(s):  
The Sun ◽  
The Moon ◽  
Solar Eclipses

Literary and astronomical evidence for a total eclipse of the sun observed in ancient Ugarit on 3 May 1375 b.c.

1970 ◽  
Vol 33 (3) ◽  
pp. 467-489 ◽  
Author(s):  
J. F. A. Sawyer ◽  
F. R. Stephenson
Keyword(s):  
High Speed ◽  
The Sun ◽  
Total Eclipse ◽  
Solar Eclipses ◽  
Speed Computer

A total eclipse of the sun is rare enough in any one place and spectacular enough to leave a profound impression on those who observe it. From very early times it was regarded as a portent of disaster and carefully recorded. Advances in the field of geophysics, together with the advent of the high-speed computer, have made it possible to compute early solar eclipses with a new degree of precision, and we may now expect to find a significant correlation between literary and astronomical evidence for solar eclipses in areas where a sufficiently representative bloc of literature has survived. The region around Has Shamra (ancient Ugarit) is one such area, and it was decided to compute the principal solar eclipses visible there during the period covered by the Ugaritic texts (c. 1450–1200 b.c.), and scan the texts for possible references.

scholarly journals XLIX. Extract of a letter from Mr. John Winthrop, Professor of Mathematics in Cambridge, New England, to James Short, A.M. F. R. S

1764 ◽  
Vol 54 ◽  
pp. 277-278
Keyword(s):  
New England ◽  
The Sun ◽  
The Moon ◽  
The Subject ◽  
Equation Of Time

Sir, I am greatly obliged to you for your candid and judicious remarks on my observation of Venus on the Sun, which I received from my much-esteemed friend Dr. Franklin. I wrote to the Dr. pretty largely on the subject, which I desired him to communicated to you: but when I had the pleasure of a visit from him last summer, he could not recollect whether he had done it or not. I therefore beg leave now to trouble you with the substance of it. Your remarks turned on two points, the longitude of the place of the observation, and the equation of time when found by equal altitudes. As to the first, I was so different of of the observation on the Moon, that I chose to keep to the longitude of St. John's, as set down by Sir Jonas Moore, who makes it 52° 50' west of Greenwich. Though I did not think it needful to mention this doubt in the pamphlet, which was published soon after I got home, to gratify the curiosity of my countrymen, yet I expressed it fully in a written account of the observation, drawn up in a different form, and sent to the late Dr. Bradley, but which I believe never reached his hands.

scholarly journals IMPROVING STUDENTS’ LEARNING OUTCOMES THROUGH JIGSAW LEARNING MODEL AT GRADE VI SD NEGERI 066050 MEDAN

2021 ◽  
Vol 5 (5) ◽  
pp. 1211
Author(s):  
Mangara Halomoan Siagian ◽  
Ester Julinda Simarmata ◽  
Reflina Sinaga ◽  
Patri Janson Silaban
Keyword(s):  
Action Research ◽  
Learning Outcomes ◽  
Learning Model ◽  
Average Score ◽  
The Sun ◽  
The Moon ◽  
The Subject ◽  
Classroom Action Research ◽  
Academic Year

The learning model refers to a learning that encourages students to be active and help each other in mastering the subject. This study aimed to improve students’ learning outcomes at grade VI SD Negeri 066050 Medan Denai for the academic year 2020/2021. This research was Classroom Action Research. The results of the study revealed that for the pretest,6 students (23.07%) reached the target score with an average score of 63.45. In cycle I, there were 11 students (42.30%) who reached the target, with an average of 67.94%. In cycle II, there were 21 students (84.61%) who reached the target with an average of 82.56%. The learning implementation was categorized as good. This was seen from the results of observations of teachers’ activities in cycle I for 64% and in cycle II it increased to 82%. Then, the implementation of learning was good. This was seen from the results of students’ observation activities in cycle I for 60% and in cycle II it increased to 88%. Thus, the results of the study showed an increase in students’ learning outcomes on the theme of Bumiku, the sub-themes of Earth, the Sun and the Moon of learning 1 and learning 2 at grade VI SD for the academic year 2020/2021 . In short, implementing Jigsaw learning model improved students’ learning outcomes.

scholarly journals III. Total eclipse of the sun observed at Caroline Island, on 6th May, 1883

1889 ◽  
Vol 180 ◽  
pp. 119-135 ◽  
Keyword(s):  
Royal Society ◽  
Solar Physics ◽  
The Sun ◽  
The Moon ◽  
Solar Image ◽  
Total Eclipse ◽  
Previous Communication

Owing to the representations of the Committee on Solar Physics, who communicated with the Royal Society the desirability of observing this eclipse, an expedition was organised under the auspices of the latter body. The Council of the Royal Society having requested me to draw up a report on the Total Eclipse observed at Caroline Island, I undertook the task so far as relates to the results which were obtained with the same instruments which were employed in the observations of the Total Eclipse in Egypt in 1882. Two observers, Mr. H. Lawrance and Mr. C. R. Woods, who had both taken part in the Eclipse Expedition to Egypt as assistants to Professors Lockyer and Schuster, were entrusted with the arduous duty of making the observations. The expedition was devoted entirely to photographic work, the main object being to continue the photographic observations which had been carried on in Egypt, consisting of photographs of the corona taken on very rapid plates with varying exposure, photographs of the corona taken with a slitless spectroscope (the prismatic camera), and a photograph of the corona spectrum, the image of the moon and the corona being thrown on the slit cutting the diameter of the former. There is no occasion to describe the instruments which were employed for the first two classes of observations, as they have been fully described in the previous communication to the Royal Society by Professor Schuster and myself which appears in the ‘Philosophical Transactions’ for 1884. The photographic spectroscope which was employed on this occasion differed in one detail, and in one detail only, in that the dispersion was doubled, two medium dense flint prisms of 62½° being employed instead of one prism of the same angle. The experience gained in Egypt seemed to show that, if the coronal light was equally bright in the two eclipses, the rapid plates used on both occasions would be amply adequate to secure photographs with the larger dispersion. Besides these observations several others were made, but did not meet with the success it was hoped they would have done. A photoheliograph, giving a 4-inch solar image, was attached to an equatorial mount, in addition to the wooden camera carrying a lens of 5 ft. 6 in. focus, with which the smaller-sized pictures of the corona were taken in Egypt. The pictures taken with the former though sufficiently exposed, showed that a large image could be utilised.

scholarly journals A Fix by Total Solar Eclipse

1954 ◽  
Vol 7 (4) ◽  
pp. 402-404
Author(s):  
D. H. Sadler
Keyword(s):  
Solar Eclipse ◽  
Total Solar Eclipse ◽  
Circular Cone ◽  
The Sun ◽  
The Moon ◽  
Total Eclipse ◽  
The Earth

A total eclipse of the Sun provides an opportunity, rare though it may be, of obtaining an instantaneous fix from the Sun alone. Eclipses vary greatly in character, in position on the Earth, in the width of the path of totality, in the duration, and also in the direction of the path. However, the shadow of the Moon cast by the Sun is always a right circular cone which, in the case of a total eclipse, intersects the Earth's surface at some point before its vertex. Owing to the motion of the Moon in its orbit round the Earth the shadow moves at a speed of about 2000 m.p.h. from west to east (it varies considerably according to the distance of the Moon from the Earth).

scholarly journals The Astronomical Event of the Decade: Library Opportunities with the Coming Total Eclipse of the Sun

2017 ◽  
Vol 15 (1) ◽  
pp. 33
Author(s):  
Andrew Fraknoi ◽  
Dennis Schatz
Keyword(s):  
United States ◽  
Solar Eclipse ◽  
The United States ◽  
Total Solar Eclipse ◽  
The Sun ◽  
The Moon ◽  
Total Eclipse

On August 21, 2017, we will be treated to the first total eclipse of the sun visible in the continental United States in almost forty years. Because the total eclipse can only be seen in the United States, it is being called the “All American Total Solar Eclipse.” In this kind of eclipse, the Moon gets in front of the sun in the sky and blocks its light.

scholarly journals Functioning of space objects in the Crimeantatar language

2019 ◽  
Vol 6 (1) ◽  
pp. 122-125
Author(s):  
L.S. Absemieva
Keyword(s):  
Folk Songs ◽  
The Sun ◽  
The Moon ◽  
Continuous Sampling ◽  
Space Objects ◽  
Young Branch ◽  
The Subject ◽  
Crimean Tatar

The subject of the analysis in the article are the words related to the names of space objects in the Crimean Tatar language. Cosmodome and astronomy are onomastic space, providing a unique layer of vocabulary of the Crimean Tatar language. Comanime ‒ name universe, the moon, the sun and other cosmic objects, research is called cosmania. Names of space objects are often found in the Crimean Tatar folklore, folk songs, poetry. The young branch of onomastics of the Crimean Tatar language is practically not studied. This article investigates and groups space objects, which are extracted by the method of continuous sampling from folklore samples, poetry of EshrefShemya-zade. The study of kosminkov and astronomov necessary, as they provide invaluable historical, cultural, ethnographic material.

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