When Computers Were Human

When Computers Were Human

Author: David Alan Grier

Publisher: Princeton University Press

Published: 2013-11-01

Total Pages: 423

ISBN-13: 1400849365

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Before Palm Pilots and iPods, PCs and laptops, the term "computer" referred to the people who did scientific calculations by hand. These workers were neither calculating geniuses nor idiot savants but knowledgeable people who, in other circumstances, might have become scientists in their own right. When Computers Were Human represents the first in-depth account of this little-known, 200-year epoch in the history of science and technology. Beginning with the story of his own grandmother, who was trained as a human computer, David Alan Grier provides a poignant introduction to the wider world of women and men who did the hard computational labor of science. His grandmother's casual remark, "I wish I'd used my calculus," hinted at a career deferred and an education forgotten, a secret life unappreciated; like many highly educated women of her generation, she studied to become a human computer because nothing else would offer her a place in the scientific world. The book begins with the return of Halley's comet in 1758 and the effort of three French astronomers to compute its orbit. It ends four cycles later, with a UNIVAC electronic computer projecting the 1986 orbit. In between, Grier tells us about the surveyors of the French Revolution, describes the calculating machines of Charles Babbage, and guides the reader through the Great Depression to marvel at the giant computing room of the Works Progress Administration. When Computers Were Human is the sad but lyrical story of workers who gladly did the hard labor of research calculation in the hope that they might be part of the scientific community. In the end, they were rewarded by a new electronic machine that took the place and the name of those who were, once, the computers.


Surveys and Surveyors of the Public Domain, 1785-1975

Surveys and Surveyors of the Public Domain, 1785-1975

Author: Lola Cazier

Publisher:

Published: 1976

Total Pages: 248

ISBN-13:

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"Cadastral surveys are performed to create, mark, and define, or to retrace the boundaries between abutting land owners, and, more particularly, between land of the Federal Government and private owners or local governments. As referred to here, cadastral surveys were performed only by the General Land Office during its existence and by the Bureau of Land Management. The Bureau of Land Management is the only agency that is currently authorized to determine the boundaries of the public lands of the United States. Proper understanding of the basis for performance of cadastral surveys includes an understanding of the history of the public land surveys. An understanding of that history requires some consideration of the people who performed these surveys and of the people whose land was affected by them. These chapters were written to be used as an aid in training cadastral surveyors in the application of surveying principles. The learner is expected to gain from the factual material on survey laws and their formation, as well as from a study of the people who performed the surveys. Many of the men who had an important role in the history of cadastral surveying are still living, but only those who have retired are included in the present document."--Foreword.


The History of the Telescope

The History of the Telescope

Author: Henry C. King

Publisher: Courier Corporation

Published: 2003-01-01

Total Pages: 484

ISBN-13: 9780486432656

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This remarkable history encompasses not only the achievements of the early inventors and astronomers but also the less frequently recounted stories of the instrument makers and of the actual instruments. A model of unsurpassed, comprehensive scholarship, this volume covers many fields, including professional and amateur astronomy. 196 black-and-white illustrations.


The Sun Recorded Through History

The Sun Recorded Through History

Author: J.M. Vaquero

Publisher: Springer Science & Business Media

Published: 2009-04-21

Total Pages: 395

ISBN-13: 0387927905

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The Sun is nowadays observed using di?erent techniques that provide an almost instantaneous 3-D map of its structure. Of particular interest is the studyofthevariabilityinthesolaroutputproducedbythedissipationofm- netic energy on di?erent spatial and temporal scales – the so-called magnetic activity. The 11-year cycle is the main feature describing this phenomenon. Apart from its intrinsic scienti?c interest, this topic is worth studying because of the interaction of such processes with the terrestrial environment. A ?eet of space and ground-based observatories are currently monitoring the behaviour of our star on a daily basis. However, solar activity varies not only on this decadal time-scale, as has been attested mainly through two methods: (a) records of the number of sunspots observed on the solar surface from 1610, and (b) the records of 14 10 cosmogenic isotopes, such as Cand Be, measured in tree-rings and i- cores, respectively. The study of the long-term behaviour of solar activity may be comp- mented by the study of historical accounts describing phenomena directly or indirectly related to solar activity. Numerous scienti?c and non-scienti?c d- uments have reported these events and we can make use of them as a proxy of solar activity in past times.