Penn Library's Library's LJS 487 - [Treatises on astronomical instruments].(Video Orientation)
Penn collection
Schoenberg Institute for Manuscript Studies (SIMS): Videos
Degree type
Discipline
Subject
Astronomy -- Early works to 1800
Astronomy
Astronomical instruments -- Early works to 1800
Sundials -- Early works to 1800
Sundials
Time measurements -- Early works to 1800
Time measurements
Astronomical instruments
Codices
Treatises
Tables (documents)
Manuscripts Latin
Manuscripts Renaissance
Astrophysics and Astronomy
History of Science, Technology, and Medicine
Renaissance Studies
Astronomy
Astronomical instruments -- Early works to 1800
Sundials -- Early works to 1800
Sundials
Time measurements -- Early works to 1800
Time measurements
Astronomical instruments
Codices
Treatises
Tables (documents)
Manuscripts Latin
Manuscripts Renaissance
Astrophysics and Astronomy
History of Science, Technology, and Medicine
Renaissance Studies
Format
youtube
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License
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Distributor
Author
Contributor
Abstract
Advisor
Date Range for Data Collection (Start Date)
Date Range for Data Collection (End Date)
Digital Object Identifier
Series name and number
Publication date
2023-03-20
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Video Orientation to the University of Pennsylvania Library's LJS 487, an anonymous treatise on constructing and using a horologium diei et noctis (combined sun dial and nocturnal), perhaps missing its first leaf, with 4 small tables (f. 4v, 6r, 6v, 8r). The uses include telling time of day and night, determining the times of sunrise and sunset and the precession of equinoxes and solstices, and measuring the height of stars. The first pages of an incomplete treatise on constructing a instrument for measuring angles called a baculus Jacob (called cross-staff or Jacob's staff in English, arbalestrille in French) follow. Written in eastern France in the 16th century, perhaps Franche-Comté or Lyonnais in the first half of the 16th century (based on script and watermarks). Record on Franklin, with link to a digital copy: https://franklin.library.upenn.edu/catalog/FRANKLIN_9956428933503681 Record on Internet Archive, with a link to PDF: https://archive.org/details/ljs487