The Beginning of the Long Dash / / Malcolm M. Thomson.
In the early days of formal timekeeping, determining the time was a specialized branch of astronomy. Now it is a branch of physics. Through decades of innovation, scientists at the Dominion Observatory and the National Research Council have created a Canadian time signal based not on the stars but o...
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Place / Publishing House: | Toronto : : University of Toronto Press, , [2019] ©1978 |
Year of Publication: | 2019 |
Language: | English |
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Thomson, Malcolm M., author. aut http://id.loc.gov/vocabulary/relators/aut The Beginning of the Long Dash / Malcolm M. Thomson. Toronto : University of Toronto Press, [2019] ©1978 1 online resource (256 p.) text txt rdacontent computer c rdamedia online resource cr rdacarrier text file PDF rda Heritage Frontmatter -- Contents -- Plates -- Preface -- Acknowledgments -- 1. The origin of astronomical timekeeping -- 2. Integrating the time services -- 3. The rise of the Dominion Observatory -- 4. The evolution of astronomical techniques -- 5. From pendulums to masers: clocks of the Time Service -- 6. Radio time signals -- APPENDIX A. The unit of time -- APPENDIX B. Daylight Saving Time -- Bibliography -- Index restricted access http://purl.org/coar/access_right/c_16ec online access with authorization star In the early days of formal timekeeping, determining the time was a specialized branch of astronomy. Now it is a branch of physics. Through decades of innovation, scientists at the Dominion Observatory and the National Research Council have created a Canadian time signal based not on the stars but on the cesium atom. This history of some 125 years of timekeeping in Canada documents a resolution in scientific principles and methods. Timekeeping in Canada originated in response to he needs of the mariner, the surveyor, the meterorologist, and the astronomer. Until the 1880s local time centres, serving regional needs, operated autonomously. The railways which linked the nation were one of the key factors in the gradual centralizatino of timekeeping responsibilities. The Dominion Observatory, established as a base for the survey of western Canada, gradually became of centre of research into modern techniques of timekeeping and in 1941 assumed resopnsibility for official time. This book reviews the advances adopted and often pioneered by the scientists at the Time Service in Ottawa, including the shift from astronomical to atomic time, short wave signal transmissions, and sophisticated astronomical measurements. The author was associated with the Dominion Observatory in Ottawa for more than forty years. He has been personally involved in the story he records, and the result is a rich blend of history, science, and anecdote. Mode of access: Internet via World Wide Web. In English. Description based on online resource; title from PDF title page (publisher's Web site, viewed 30. Aug 2021) Time Systems and standards Canada. SCIENCE / Time. bisacsh Title is part of eBook package: De Gruyter University of Toronto Press eBook-Package Archive 1933-1999 9783110490947 https://doi.org/10.3138/9781487575731 https://www.degruyter.com/isbn/9781487575731 Cover https://www.degruyter.com/cover/covers/9781487575731.jpg |
language |
English |
format |
eBook |
author |
Thomson, Malcolm M., Thomson, Malcolm M., |
spellingShingle |
Thomson, Malcolm M., Thomson, Malcolm M., The Beginning of the Long Dash / Heritage Frontmatter -- Contents -- Plates -- Preface -- Acknowledgments -- 1. The origin of astronomical timekeeping -- 2. Integrating the time services -- 3. The rise of the Dominion Observatory -- 4. The evolution of astronomical techniques -- 5. From pendulums to masers: clocks of the Time Service -- 6. Radio time signals -- APPENDIX A. The unit of time -- APPENDIX B. Daylight Saving Time -- Bibliography -- Index |
author_facet |
Thomson, Malcolm M., Thomson, Malcolm M., |
author_variant |
m m t mm mmt m m t mm mmt |
author_role |
VerfasserIn VerfasserIn |
author_sort |
Thomson, Malcolm M., |
title |
The Beginning of the Long Dash / |
title_full |
The Beginning of the Long Dash / Malcolm M. Thomson. |
title_fullStr |
The Beginning of the Long Dash / Malcolm M. Thomson. |
title_full_unstemmed |
The Beginning of the Long Dash / Malcolm M. Thomson. |
title_auth |
The Beginning of the Long Dash / |
title_alt |
Frontmatter -- Contents -- Plates -- Preface -- Acknowledgments -- 1. The origin of astronomical timekeeping -- 2. Integrating the time services -- 3. The rise of the Dominion Observatory -- 4. The evolution of astronomical techniques -- 5. From pendulums to masers: clocks of the Time Service -- 6. Radio time signals -- APPENDIX A. The unit of time -- APPENDIX B. Daylight Saving Time -- Bibliography -- Index |
title_new |
The Beginning of the Long Dash / |
title_sort |
the beginning of the long dash / |
series |
Heritage |
series2 |
Heritage |
publisher |
University of Toronto Press, |
publishDate |
2019 |
physical |
1 online resource (256 p.) |
contents |
Frontmatter -- Contents -- Plates -- Preface -- Acknowledgments -- 1. The origin of astronomical timekeeping -- 2. Integrating the time services -- 3. The rise of the Dominion Observatory -- 4. The evolution of astronomical techniques -- 5. From pendulums to masers: clocks of the Time Service -- 6. Radio time signals -- APPENDIX A. The unit of time -- APPENDIX B. Daylight Saving Time -- Bibliography -- Index |
isbn |
9781487575731 9783110490947 |
callnumber-first |
Q - Science |
callnumber-subject |
QB - Astronomy |
callnumber-label |
QB223 |
callnumber-sort |
QB 3223 T466 41978 |
geographic_facet |
Canada. |
url |
https://doi.org/10.3138/9781487575731 https://www.degruyter.com/isbn/9781487575731 https://www.degruyter.com/cover/covers/9781487575731.jpg |
illustrated |
Not Illustrated |
dewey-hundreds |
300 - Social sciences |
dewey-tens |
380 - Commerce, communications & transportation |
dewey-ones |
389 - Metrology & standardization |
dewey-full |
389.17 |
dewey-sort |
3389.17 |
dewey-raw |
389.17 |
dewey-search |
389.17 |
doi_str_mv |
10.3138/9781487575731 |
oclc_num |
1129158677 |
work_keys_str_mv |
AT thomsonmalcolmm thebeginningofthelongdash AT thomsonmalcolmm beginningofthelongdash |
status_str |
n |
ids_txt_mv |
(DE-B1597)528026 (OCoLC)1129158677 |
carrierType_str_mv |
cr |
hierarchy_parent_title |
Title is part of eBook package: De Gruyter University of Toronto Press eBook-Package Archive 1933-1999 |
is_hierarchy_title |
The Beginning of the Long Dash / |
container_title |
Title is part of eBook package: De Gruyter University of Toronto Press eBook-Package Archive 1933-1999 |
_version_ |
1806143861312978944 |
fullrecord |
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