Edward J. Johnson and the early History of Ship Magnetism

1979 ◽  
Vol 32 (3) ◽  
pp. 415-421
Author(s):  
Charles H. Cotter

During the months of October and November 1835 a series of magnetic observations was made, under orders of the Lords Commissioners of the Admiralty, on board the iron steamship Garryowen by Commander Edward J. Johnson R.N. The results of Johnson's observations paved the way to Airy's solution to the crucial problem of compass management on board an iron ship.Johnson related in a paper in which he described his experiments, that he proceeded to Ireland taking with him the necessary instruments for ascertaining the deviation of the magnetic needle produced by the local attraction of an iron steam-vessel, together with instruments for measuring dip and magnetic intensity. Every facility was afforded him by the owners of the Garryowen, the City of Dublin Steam Packet Company, and by the builders of the vessel, Messrs. Laird of Liverpool.The Garryowen, built in 1833, was a paddle steamer of length 130 ft, breadth 21 ft 6 in and depth 11 ft. She was equipped with two engines each rated at 85 h.p. and her tonnage was 281 tons burden. She was fitted with four water-tight transverse bulkheads of wrought-iron ¼ in thick. Her hull and boilers were of malleable iron and the total weight of iron in her structure amounted to 180 tons.

This report commences with a description of the iron steam-vessel, the “Garryowen,” belonging to the City of Dublin Steam Packet Company, and built by the Messrs. Laird, of Liverpool. She is constructed of malleable iron, is 281 tons burthen, and draws only 5 1/4 feet water, although the weight of iron in the hull, machinery, &c. is 180 tons. This vessel was placed under the directions of the author, in Tarbert Bay, on the Shannon, on the 19th of October, 1835, for the purpose of investigating its local attractions on the compass. The methods which were adopted with that view are given ; together with tables of the results of the several experiments, and plans of the various parts of the Garryowen. The horizontal deflections of the magnetic needle at different situations in the vessel were observed, for the purpose of ascertaining the most advantageous place for a steering compass, and also for the application of Professor Barlow’s correcting plate : and the dip and intensity in these situations were, at the same time, noted.


Urban History ◽  
2021 ◽  
pp. 1-21
Author(s):  
Asif Siddiqi

Abstract This article recovers the early history of the Soviet ‘closed city’, towns that during the Cold War were absent from maps and unknown to the general public due to their involvement in weapons research. I argue that the closed cities echoed and appropriated features of the Stalinist Gulag camp system, principally their adoption of physical isolation and the language of obfuscation. In doing so, I highlight a process called ‘atomized urbanism’ that embodies the tension between the obdurate reality of the city and the goal of the state to obliterate that reality through secrecy. In spatial terms, ‘atomized’ also describes the urban geography of these cities which lacked any kind of organic suburban expansion.


Antichthon ◽  
2014 ◽  
Vol 48 ◽  
pp. 1-13
Author(s):  
C.J. Mackie

AbstractThis article explores the part played by Mount Ida in the Iliad. It begins with some consideration of Ida in the early ‘history’ of Troy – the stories of Dardanus and the early line of Trojan kings. The city of Troy (Ilios) has its origins on Mount Ida, and the mountain remains very dear to the Trojans in many different ways. The rivers at Troy have their source on the mountain, and the Trojans acquire their water and wood from there. Moreover, the mountain is a central part of Trojan religious life, including the peak at Gargarus, where Zeus resides for a significant part of the poem. This article considers the two journeys of Zeus to Mount Ida from Olympus in the Iliad, and the ways that these are dealt with in the text. It raises questions about the rationale for and the effect of his visits there. It is argued that the poet uses Zeus’s absence from Olympus to ‘open up’ the cosmos, and permit new kinds of divine conduct and intervention. The article concludes with some consideration of the fact that the text offers no reference to the return of Zeus from Ida to Olympus prior to the council of the gods and Theomachy in Book 20.


2021 ◽  
Author(s):  
Brian Piitz

This applied thesis is focused on the full cataloguing and contextualizing of a collection of one hundred and sixteen postcards at the Art Gallery of Ontario (AGO) depicting scenes of Toronto a the beginning of the twentieth century. Twenty-seven publishers representing international, national and regional manufacturers are identified with their imprint on the verso of the postcard. The applied thesis includes a literature survey discussing a rationale for the cataloguing of postcards, as well as a brief overview of the history of postcards and the history of the urbanization of the City of Toronto. A description and analysis of the AGO postcards provides information about the production cycle of postcards, the scope of commercial photography and the dissemination of photographic imagery in Toronto. The thesis also examines the way images were altered in the production cycle and the manner in which photographers and publishers exchanged photographs intended for postcard production.


2021 ◽  
Author(s):  
Brian Piitz

This applied thesis is focused on the full cataloguing and contextualizing of a collection of one hundred and sixteen postcards at the Art Gallery of Ontario (AGO) depicting scenes of Toronto a the beginning of the twentieth century. Twenty-seven publishers representing international, national and regional manufacturers are identified with their imprint on the verso of the postcard. The applied thesis includes a literature survey discussing a rationale for the cataloguing of postcards, as well as a brief overview of the history of postcards and the history of the urbanization of the City of Toronto. A description and analysis of the AGO postcards provides information about the production cycle of postcards, the scope of commercial photography and the dissemination of photographic imagery in Toronto. The thesis also examines the way images were altered in the production cycle and the manner in which photographers and publishers exchanged photographs intended for postcard production.


Leonardo ◽  
2019 ◽  
Vol 52 (1) ◽  
pp. 37-43
Author(s):  
Charlotte Frost

Art critic Jerry Saltz is regarded as a pioneer of online art criticism by the mainstream press, yet the Internet has been used as a platform for art discussion for over 30 years. There have been studies of independent print-based arts publishing, online art production and electronic literature, but there have been no histories of online art criticism. In this article, the author provides an account of the first wave of online art criticism (1980–1995) to document this history and prepare the way for thorough evaluations of the changing form of art criticism after the Internet.


2018 ◽  
Vol 45 (1) ◽  
pp. 132-145
Author(s):  
Gyula Szvák

It would be too early to try and summarize the way in which the issue of Russia’s “state historical and remembrance policy” has evolved or foresee its possible outcomes, as the standard uniform set of schoolbooks has not yet been approved. The media-voting competitions presented in this essay, however, clearly demonstrate the national social climate and its trends, which would have to be moulded into some form of an “all-Russian socium” by such a new approach to history. As contemporaries we might curiously await the next rounds of the “identity battle,” but as historians we must give voice to scepticism in regards to hopes of any form of quick success. Yet most of all, we have to stand by the deep conviction that only a pluralistic approach to history based on free research and the freedom to present freely conceived alternatives can help in the crystallization of a realistic national self-image. P.S.: For the first time in the history of Russia a statue has been erected for Ivan IV (the Terrible, the Fearsome) in the city of Oryol on 15 October 2016. The countdown has begun.


2017 ◽  
Vol 59 (1) ◽  
pp. 71-94
Author(s):  
John Curran

Recent research on the textual tradition of Latin versions of the Testimonium Flavianum prompts another enquiry into the original text and the transmission of the famous passage. It is suggested here that the Greek/Latin versions highlight a western/eastern early history of the Testimonium and that in turn directs our attention back to the original circumstances of its composition and publication in the city of Rome in the later years of the first century. Restored to its original historical context, the Testimonium emerges as a carefully crafted attack upon the post-Pauline community of Christ-followers in the city.


2016 ◽  
Vol 14 (2) ◽  
pp. 419 ◽  
Author(s):  
Asep Saefullah

This article attempts to trace the early history of Islam in Temasek, a former name of Singapore. The city was also known as the ‘Sea Town’, and was a part of the Nusantara. In the 12th-14th century, Tumasik and Kedah were important ports in the Malay Peninsula. Tumasik, at that time, was important enough to figure in international trade networks. The very strategic location of Tumasik, at the very tip of the Malay Peninsula, made it a significant prize for the master. Kingdoms that once ruled it: the Sriwijaya kingdom until the end of the 13th century AD and Majapahit kingdom that ruled it until the 14th century. In the 15th century AD, Tumasik came under the rule of Ayutthaya-Thailand; and subsequent occupation controlled by the Sultanate of Malacca to the Portuguese in 1511 AD. Speaking on the comming of Islam in Tumasik that was along with the influx of Muslim merchants, both Arabic and Persian, between the 8th – 11th century which the trading activity increased in the Archipelago. Coastal cities and ports, one of which Tumasik, on the Malay Peninsula became the settlements of Muslim tradespeople. Most of them settled and married there. Thus, it is strongly suspected that Islam has been present in Tumasik since perhaps the 8th century AD. Up until the beginning of the 16th century, the old Singapore remains a Muslim settlement, along with other vendors, both from Europe, India, and China, and also became an important port under the Sultanate of Malacca. That Malaccan empire was conquered by the Portuguese in 1511. Keywords: early history of Islam, Tumasik, Singapore, Sultanate of Malacca Artikel ini mencoba menelusuri sejarah awal Islam di Tumasik, kada disebut juga Temasek, nama dulu bagi Singapura. Kota ini juga disebut sebagai Kota Laut (Sea Town), dan merupakan bagian dari Nusantara masa lalu. Pada abad ke-12 s.d. 14 M, Tumasik bersama Kedah merupakan pelabuhan-pelabuhan penting di Semenanjung Malaya. Pada masa itu, Tumasik merupakan kota perdagangan yang cukup besar dan penting dalam jaringan perdagangan internasional. Posisinya yang sangat strategis di ujung Semenanjung Malaya, menjadikan Tumasik menggiurkan untuk dikuasai. Kerajaan-kerajaan yang pernah menguasai Tumasik yaitu Sriwijaya sampai akhir abad ke-13 M dan Majapahit sampai abad ke-14 M. Pada abad ke-15 M, Tumasik berada di bawah kekuasaan Ayutthaya-Thailand; dan selanjutnya dikuasai Kesultanan Malaka sampai pendu¬dukan Portugis 1511 M. Adapun proses masuknya Islam di Tumasik terjadi bersamaan dengan masuknya para pedagang Muslim, baik dari Arab maupun Persia pada abad ke-8 s.d. 11 M yang mengalami peningkatan aktivitas perdagangan. Kota-kota pesisir dan pelabuhan-pelabuhan, salah satunya Tumasik, di Semenanjung Malaya menjadi pemukiman-pemukiman bagi para pedagang Muslim tersebut. Sebagian dari mereka menetap dan berkeluarga di sana. Dengan demikian, diduga kuat bahwa Islam telah hadir di Tumasik antara abad ke-8 M - ke 11 M. Hingga permulaan abad ke-16 M, Singapura lama tetap menjadi pemukiman Muslim, bersama para pedagang lain, baik dari Eropa, India, maupun Cina, dan sekaligus menjadi pelabuhan penting di bawah kekuasaan Kesultanan Malaka, sampai dengan kesultanan ini ditaklukan oleh Portugis pada 1511 M. Kata kunci: sejarah awal Islam, Tumasik, Singapura, Kesultanan Malaka


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