The Resource All about sundials, presented by J. Leon Poirier

All about sundials, presented by J. Leon Poirier

Label
All about sundials
Title
All about sundials
Statement of responsibility
presented by J. Leon Poirier
Contributor
Subject
Language
eng
Summary
Did you know that the Egyptians used sundials and French railroads set their clocks with sundials until 1920? Over the centuries, hundreds of different sundials have been made from giant dials 100 ft high to tiny ones hidden in signet rings. The most common sundials use the azimuth of the Sun to tell time while others use its altitude. We will show examples of the two types of sundials and explain how each works. You will learn how to convert sundial time to clock time and how to make your own sundial. We will also see that sundials not only keep accurate time but can also show many other important solar events including, for example, the times of sunrise and sunset, the dates of the equinoxes and solstices, the signs of the Zodiac, and even your birthday or anniversary. You will be able to examine many homemade sundials including diptych, shepherds, flag, analemma, horizontal and vertical, equatorial, cube, perforated and universal ring, and armillary sphere dials. You can even take home a handout that you can cut out to make your own equatorial sundial or armillary sphere sundial. Doctor Poirier has taught electrical engineering and physics at UMASS Lowell and Tufts University. He has published over 50 papers and reports and holds 15 patents in radar and related topics. He is a life member of the Minute Man Sail and Power Squadron where teaches piloting and celestial navigation. Among his interests are celestial navigation, 15th-18th century navigation instruments, and sundials. He and his wife enjoy traveling and have visited 45 countries
Member of
Characteristic
videorecording
Date time place
Recorded at the Chelmsford Public Library on March 14, 2014
Funding information
This lecture is part of the Friday Morning Lecture Series sponsored by the Library and Learning in Retirement Association. It is funded by the Chelmsford Friends of the Library.
PerformerNote
Presented by J. Leon Poirier
http://library.link/vocab/relatedWorkOrContributorName
  • Poirier, J. Leon
  • Chelmsford Public Library (Chelmsford, Mass.)
Series statement
  • Library hour
  • Friday morning lecture series
http://library.link/vocab/subjectName
  • Videodiscs
  • Sundials
Technique
not applicable
Label
All about sundials, presented by J. Leon Poirier
Instantiates
Publication
Carrier category
videodisc
Carrier category code
vd
Carrier MARC source
rdacarrier
Color
multicolored
Configuration of playback channels
quadrophonic multichannel or surround
Content category
two-dimensional moving image
Content type code
tdi
Content type MARC source
rdacontent
Control code
1553886
Dimensions
4 3/4 in.
Dimensions
other
Extent
1 videodisc (approx. 60 min.)
Media category
video
Media MARC source
rdamedia
Media type code
v
Medium for sound
videodisc
Other physical details
sound, color
Sound on medium or separate
sound on medium
Specific material designation
videodisc
System control number
  • (Sirsi) 1553886
  • (Sirsi) 1553886
Video recording format
DVD
Label
All about sundials, presented by J. Leon Poirier
Publication
Carrier category
videodisc
Carrier category code
vd
Carrier MARC source
rdacarrier
Color
multicolored
Configuration of playback channels
quadrophonic multichannel or surround
Content category
two-dimensional moving image
Content type code
tdi
Content type MARC source
rdacontent
Control code
1553886
Dimensions
4 3/4 in.
Dimensions
other
Extent
1 videodisc (approx. 60 min.)
Media category
video
Media MARC source
rdamedia
Media type code
v
Medium for sound
videodisc
Other physical details
sound, color
Sound on medium or separate
sound on medium
Specific material designation
videodisc
System control number
  • (Sirsi) 1553886
  • (Sirsi) 1553886
Video recording format
DVD

Library Locations

    • Chelmsford Public LibraryBorrow it
      25 Boston Road, Chelmsford, MA, 01824, US
      42.5945374 -71.3516266
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