scholarly journals RADIO ASTRONOMY - An Introduction

2002 ◽  
Vol 1 (1) ◽  
pp. 95-99
Author(s):  
T. Prabu
Keyword(s):  
World War Ii ◽  
Radio Astronomy ◽  
Electromagnetic Spectrum ◽  
Radio Telescopes ◽  
World War ◽  
Science And Engineering ◽  
Optical Telescope ◽  
Interdisciplinary Field ◽  
The Earth ◽  
Radio Signals

Wonders of the night sky developed curiously to the ancient civilization and paved way to the development of an oldest branch of knowledge, Astronomy. Today it has developed to be rich field in science. Astronomy is much different from many other science fields. ? It deals with remote subjects, unimaginable magnitude distances, sizes and time. The conventional optical telescope could not reveal vast majority of objects in the sky. Apart from light there are other invisible radiations reaching the Earth from the celestial objects. People started exploring both ends of the electromagnetic spectrum. Ever since World War II, astronomers are exploring the radio sky, by using Radio Telescopes. It became a new branch of study, the Radio Astronomy. Interesting fundamental discoveries and the inquisitive nature of the problems developed curiosity for future explorations in this field. The celestial radio signals reaching us are extremely week. It is required to develop sophisticated tools and powerful techniques to aid radio astronomy observations. Today Radio Astronomy has developed to be a highly interdisciplinary field with connections to various fields of science and engineering.

scholarly journals From the Solar Corona to Clusters of Galaxies: The Radio Astronomy of Bruce Slee

2004 ◽  
Vol 21 (1) ◽  
pp. 23-71 ◽  
Author(s):  
Wayne Orchiston
Keyword(s):  
World War Ii ◽  
Solar Corona ◽  
Radio Astronomy ◽  
Solar Radio Emission ◽  
Clusters Of Galaxies ◽  
Radio Telescopes ◽  
World War ◽  
Distant Galaxies ◽  
Different Types ◽  
Csiro Division

AbstractOwen Bruce Slee is one of the pioneers of Australian radio astronomy. During World War II he independently discovered solar radio emission, and, after joining the CSIRO Division of Radiophysics, used a succession of increasingly more sophisticated radio telescopes to examine an amazing variety of celestial objects and phenomena. These ranged from the solar corona and other targets in our solar system, to different types of stars and the ISM in our Galaxy, and beyond to distant galaxies and clusters of galaxies. Although long retired, Slee continues to carry out research, with emphasis on active stars and clusters of galaxies. A quiet and unassuming man, Slee has spent more than half a century making an important, wide-ranging contribution to astronomy, and his work deserves to be more widely known.

“The heart above the ruins”: Miriam Waddington’s Poetry, the Spanish Civil War, and Jewish Canadian Literature

1969 ◽  
Vol 26 ◽  
Author(s):  
Emily Robins Sharpe
Keyword(s):  
Human Rights ◽  
World War Ii ◽  
Civil War ◽  
Spanish Civil War ◽  
World War ◽  
Canadian Literature ◽  
The Earth ◽  
The Holocaust ◽  
The Subject ◽  
War Consequences

The Jewish Canadian writer Miriam Waddington returned repeatedly to the subject of the Spanish Civil War, searching for hope amid the ruins of Spanish democracy. The conflict, a prelude to World War II, inspired an outpouring of literature and volunteerism. My paper argues for Waddington’s unique poetic perspective, in which she represents the Holocaust as the Spanish Civil War’s outgrowth while highlighting the deeply personal repercussions of the war – consequences for women, for the earth, and for community. Waddington’s poetry connects women’s rights to human rights, Canadian peace to European war, and Jewish persecution to Spanish carnage.

scholarly journals Moving Lightly over the Earth

2021 ◽  
Author(s):  
Giovanni Spissu
Keyword(s):  
World War Ii ◽  
Lived Experiences ◽  
The Novel ◽  
World War ◽  
Unemployed People ◽  
The Earth ◽  
Ethnographic Observation ◽  
The Future ◽  
Specific Meaning ◽  
The Town

In the novel The Rings of Saturn (1995), the German writer W. G. Sebald recounts his solitary journey to the town of Suffolk (UK) at the end of his years, while he also reflects on some of the dramatic events that shaped World War II and his personal memories. In this work, he takes on a particular narrative tactic defined by the interaction between the text and images that creates a special type of montage in which he seems to draw from cinematic language. I argue that, drawing on Sebald’s work, we can imagine a form of ethnographic observation that involves the creation of a cinematic map through which to explore the memories and imagination of individuals in relation to places where they live. I explore the day-to-day lived experiences of unemployed people of Sulcis Iglesiente, through their everyday engagement with, and situated perceptions of, their territory. I describe the process that led me to build Moving Lightly over the Earth, a cinematic map of Sulcis Iglesiente through which I explored how women and men in the area who lost their jobs as a result of the process of its deindustrialization give specific meaning to the territory, relating it to memories of their past and hopes and desires for the future.

The cavity magnetron in World War II: was the secrecy justified?

2004 ◽  
Vol 58 (3) ◽  
pp. 283-294 ◽  
Author(s):  
B. Lovell
Keyword(s):  
World War Ii ◽  
Radio Astronomy ◽  
Present Author ◽  
World War ◽  
Main Contributor ◽  
Battle Of The Atlantic

The cavity magnetron was invented in Birmingham University and developed by the GEC for centimetric radar in World War II. Its existence was kept secret, and its deployment was delayed, in the belief that as soon as it was used the enemy would be able to adopt the technique both in radar and in countermeasures. The H 2 S radar using the cavity magnetron was first used in January 1943, and a Stirling bomber with H 2 S crashed a few nights later near Rotterdam. The radar equipment was recovered almost intact by Telefunken engineers. The author of a German report on the equipment, Otto Hachenberg, subsequently became a colleague of the present author in radio astronomy. He died in 2001 and his report of May 1943 was discovered among his papers. It reveals that the principle of the cavity magnetron was already well known in Germany, based on work published in Leningrad in 1936. The most serious effect of the delay in deployment of the magnetron in centimetric radar was in the anti–U–boat campaign, in which the new centimetric radar became the main contributor to the successful end of the Battle of the Atlantic.

Women in IT

2014 ◽  
pp. 1-12
Keyword(s):  
World War Ii ◽  
Historical Context ◽  
World War ◽  
Science And Engineering ◽  
Cultural Contexts ◽  
Women In It ◽  
Women In Technology ◽  
And Mathematics ◽  
Do So

The historical context of women in technology is introduced through individual and collective tales of notable women in the field, from Hypatia of Alexandria through to World War II Code Breakers. The lives of these women show that while women in technology (and its ancestors philosophy and mathematics) have been present throughout history, for millennia the pervading social and cultural contexts formed strong barriers against them. These barriers were so pervasive that they not merely hindered but practically suppressed female involvement in such fields. Yet, some women leaped those barriers, often in creative and interesting ways, to not only pursue their interests but also positively contribute to the overall fields of technology, science, and engineering. However, it took exceptionally resilient, strong individuals to do so.

Sacred Channels

2018 ◽  
Author(s):  
Erich Hörl
Keyword(s):  
World War Ii ◽  
Communication Theory ◽  
Philosophy Of Technology ◽  
World War ◽  
Contemporary Culture ◽  
Interdisciplinary Field ◽  
Friedrich Kittler ◽  
Cultural Imaginary ◽  
History Of ◽  
Nineteenth And Twentieth Centuries

Erich Hörl's Sacred Channels is an original take on the history of communication theory and the cultural imaginary of communication understood through the notions of the sacred and the primitive. Hörl offers insight into the shared ground of anthropology and media theory in the nineteenth and twentieth centuries and presents an archeology of the philosophy of technology that underpins contemporary culture. This singular and unique project focuses on the ethnological disciplines and their phantasmatic imaginations of a prealphabetical realm of the sacred and the primitive but reads them in the context of media cultural questions as epistemic unconscious and as projections of the emerging postalphabetical condition. Drawing inspiration from work by the likes of Friedrich Kittler, Hörl's understanding of cybernetics in the post-World War II interdisciplinary field informs a rich analysis that is of interest to media scholars and to anyone seeking to understand the historical and theoretical underpinnings of the humanities in the age of technical media.

Book reviews: Bernard Lovell, Astronomer by chance

1992 ◽  
Vol 46 (1) ◽  
pp. 200-202
Keyword(s):  
World War Ii ◽  
Radio Telescope ◽  
Radio Astronomy ◽  
Radar System ◽  
World War ◽  
New Science

Bernard Lovell, Astronomer by chance . London: Macmillan, 1991. Pp. 380, £18.99. ISBN 0-333-55195-8 In his Story of Jodrell Bank and Out of the zenith Sir Bernard Lovell has already told us in impressive detail how he fostered the new science of radio astronomy and, against fearful odds, built the 250 foot radio telescope now called the Lovell telescope. In his forthcoming Echoes of war we are promised an account of the development of the H 2 S radar system on which he worked during World War II. For those of us who are not prepared to plough through these specialized books I recommend Astronomer by chance ; not only does it cover the interesting stories of Jodrell Bank and the development of H 2 S but it tells us more about the man behind them.

“Dead Weight”: Visconti and Forms of Life

2017 ◽  
Author(s):  
Timothy C. Campbell
Keyword(s):  
World War Ii ◽  
World War ◽  
Dead Weight ◽  
Post World War Ii ◽  
The Earth ◽  
Aesthetic Realism ◽  
Forms Of Life ◽  
The Difference ◽  
The Spectator

In this chapter, the first of three dedicated to films from post–World War II Italy, Luchino Visconti’s The Earth Trembles becomes the locus for a reflection on the relation among gesture, generosity, and landscape. The visual weight of the Cyclops Islands as destiny in the film’s frame is noted along with the difference in how members of the Valastri family touch and hold objects, especially the women of the household. An affinity between how objects are held on screen and how the spectator is urged to hold what she sees on screen is discussed, along with the importance of the long shot in Visconti’s aesthetic realism as a mode of creating attention.

7. The radio sky

2016 ◽  
pp. 77-95
Author(s):  
Geoff Cottrell
Keyword(s):  
Black Holes ◽  
World War Ii ◽  
Neutron Stars ◽  
Radio Telescope ◽  
Radio Astronomy ◽  
Cosmic Radio ◽  
Radio Waves ◽  
World War ◽  
Radar Systems ◽  
Radio Technology

‘The radio sky’ considers radio telescopes that can see much longer wavelengths. Cosmic radio waves were first discovered in 1932 by Karl Jansky, with the first radio telescope built in 1937. Technology for radar systems advanced during World War II and then after the war scientists, such as Bernard Lovell and Martin Ryle, made use of the advances in electronics, radio technology, and digital computers, to found radio astronomy. Single-dish antennas—including the Lovell Telescope at Jodrell Bank Observatory—continue to play important roles. To improve angular resolution two antennas need to be operated as an interferometer. These are described along with the discovery of quasars, supermassive black holes, pulsars, and neutron stars.

scholarly journals Basil Ferdinand Jamieson Schonland, 1896-1972

1973 ◽  
Vol 19 ◽  
pp. 629-653 ◽  
Keyword(s):  
World War Ii ◽  
Electric Fields ◽  
Early Years ◽  
Complex Nature ◽  
Benjamin Franklin ◽  
World War ◽  
Energy Research ◽  
Science And Engineering ◽  
Scientific Papers ◽  
The Subject

In the long list of scientists who have contributed to our knowledge of lightning Basil Schonland’s name will stand forth for ever. Benjamin Franklin’s name was the first; C. T. R. Wilson and G. C. Simpson were protagonists in the early years of this Century and from their work came knowledge of the electric fields and the field changes associated with thunder-clouds and lightning flashes, but Schonland was the first to use successfully the camera with rotating lenses by which the complex nature of the flash and the time-sequence of its component strokes were elucidated. With collaborators in the Transvaal he wrote a score of scientific papers on lightning, revealing discoveries of the utmost importance to science and engineering, and in no other country have comparable contributions been made to our knowledge of the subject. In the midst of this work came World War II in which he played an important part, and at the end of his extremely vigorous life of scientific experimentation came his life and work at the Atomic Energy Research Establishment at Harwell but it is as the leading authority on lightning that his name can truly be classed, alone, with Benjamin Franklin.

Sign in / Sign up

Export Citation Format

Share Document