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Sundials, Their Theory and Construction

by

Sundials, Their Theory and Construction Cover

 

Synopses & Reviews

Publisher Comments:

Have you every wanted to build a sundial or to understand how one works? Then you have probably been frustrated as you search vainly for help. Most books on the subject are either rare out-of-print works published centuries ago and available only in highly specialized collections, or highly complicated treatises whose information is hidden behind frightening arrays of involved formulas. But now your search is over. This book is designed to meet sundialing needs at either the simple or the sophisticated level.

Albert E. Waugh, professor and administrator at the University of Connecticut for 40 years, and an expert on the subject of sundials and their curious history, presents, on the one hand, a rigorous appraisal of the science of sundials, including mathematical treatment and an explanation of the pertinent astronomical background; on the other hand, he presents simple and non-technical treatments such that several of the dials can be built by children!

The subject matter is arranged in 19 chapters, each covering a different aspect of dialing science. All the common types of dials are covered, but the reader can also learn about analemmatic dials, polar dials, equatorial dials, portable dials, memorial dials, armillary spheres, reflected ceiling dials, cross dials, and old-fashioned noon marks. There are also sections on dial furniture, mottoes, the actual layout out of a dial, the equation of time, finding time in other cities, how to find the meridian, how to find time by moonlight — even how to estimate time from the length of one's own shadow! Directions are given for designing dials for any part of the country, or any place in the world. The author has designed many dials, and his text is filled with helpful hints based on his own personal experience. There are over 100 illustrations, charts, and tables, followed by an appendix which is filled with material which reduces or eliminates the need for calculation on the part of the reader.

Synopsis:

Far and away the best, most thorough coverage of ideas, mathematics concerned, types, construction, adjusting anywhere. Simple, non-technical treatment allows even children to build several of these dials. Over 100 illustrations.

Synopsis:

A rigorous appraisal of sundial science includes mathematical treatment and pertinent astronomical background, plus a nontechnical treatment so simple that several of the dials can be built by children. 106 illustrations.

Synopsis:

A rigorous appraisal of sundial science includes mathematical treatment and pertinent astronomical background, plus a nontechnical treatment so simple that several of the dials can be built by children. 106 illustrations.

Synopsis:

This fascinating approach to sundials offers a rigorous appraisal of the science of sundials, including mathematical treatment and pertinent astronomical background. It also provides a nontechnical treatment simple enough that several of the dials can be built by children. 106 illustrations.

Table of Contents

1. Historical Sketch

2. Kinds of Time

    The Sun's Apparent Motion.

    Differences in Longitiude.

    Local Apparent Time.

    Local Mean Time.

    The Equation of Time.

    Converting from Apparent to Mean Time.

    Standard Time.

    Longitude Corrections.

    Conversions from Standard Time to Local Apparent Time.

    Time When the Sun Souths.

    Daylight Saving Time.

3. The Noon Mark

    Finding the Meridian.

    The Analemma.

    Finding the Analemma by Computation.

4. The Equatorial Sundial

    Showing Standard Time.

5. The Horizontal Sundial

    General Appearance of the Horizontal Dial.

    The Latitude.

    Laying Out the Hour Lines Graphically.

    Laying Out the Hour Lines in a Unit Square.

    Laying Out the Hour Lines with Tabulated Angles.

    Laying Out the Hour Lines by Computation.

    Longitude Correction for Horizontal Dials.

    Adjustment to New Latitudes.

    Limiting Hour Lines.

6. Vertical Direct South Dials

7. The Vertical Direct North Dial

8. Vertical Direct East and West Dials

    Direct East and West Dials by Calculation.

9. The Polar Dial

    Graphic Construction.

    Construction by Calculation.

10. Vertical Declining Dials

    Graphical Method.

    The Computational Method.

    What Hour Lines to Include.

    Vertical North Decliners.

    Limiting Hours on North Decliners.

    Measuring a Wall's Declination.

    An Alternative Method of Finding a Wall's Declination.

    Dials with Large Declination.

11. Direct Reclining or Inclining Dials

    Direct South or North Recliners or Incliners.

    Direct East or West Recliners and Incliners.

12. Dials Which Both Decline and Recline

13. The Analemmatic Dial

    Laying Out the Hour Points.

    Finding the Hour Points from Central Angles.

    General Observations.

14. Reflected Ceiling Dials

    Drawing Hour Lines by Observation.

    Drawing the Dial by Computation.

15. Dial Furniture

    Dial Mottoes.

    The Equation of Time.

    Showing the Time in Other Cities.

    The Nodus and the Perpendicular Style.

    The Sun's Azimuth.

    The Sun's Altitude.

    Lines of Declination.

    The Use of Tables.

    Graphic Approach.

    Vertical Direct South Dials.

    Polar Dials and Vertical Direct East or West Dials.

    Lines of Declination: Vertical Declining Dials.

    The Length of Day.

    Signs of the Zodiac.

16. Portable Dials

    The Shepherds's Dial.

    Graphic Approach.

    Arithmetic Approach.

    Tablet Dials.

    Cubic Dials.

    Portable Cross Dials.

    Pocket Equatorial Dials.

    The Universal Ring Dial.

    Perforated Ring Dials.

    The Sun Watch.

    The Capuchin Dial.

    A Very Early Portable Dial.

    Time-Telling at Night.

    Time by Moonlight.

    The Nocturnal.

17. The Armillary Sphere

    Methods of Measurement.

    Laying out the Rings.

    The Sun's Declination.

18. Memorial Dials

    Headstone with a Sloping Surface.

    The Cross Dial.

    Star of David Dials.

19. Practical Hints on Dialling

    Laying out an Ellipse.

    Setting the Dial in Place.

    Finding Latitude and Longitude.

  Appendix

    Table A.1 The Equation of Time.

    Table A.2 Declinations of the Sun.

    Table A.3 The Zodiac.

    Table A.4 Conversion of Arc to Time.

    Table A.5 Conversion of Time to Arc.

    "Table A.6 Latitudes, Longitudes and Standard Time Zones."

    Table A.7 Earliest Sunrise and Latest Sunset.

    Table A.8 Sunset Times at Various Latitudes and Seasons.

    Table A.9 Data for Laying Out Dials in a Unit Square.

    Table A.10 Hour Angles for Horizontal and Vertical Direct South Dials.

    Table A.11 Factor Table for Reflected Ceiling Dials.

    Table A.12 Factor Table for Finding Distances of Hour Lines from the Equinoctial on Reflected Ceiling Dials.

  Bibliography

  Index

Product Details

ISBN:
9780486229478
Author:
Waugh, Albert E.
Publisher:
Dover Publications
Author:
Waugh, Albert E.
Author:
Waugh, Albert
Location:
New York
Subject:
General
Subject:
General science
Subject:
Science
Subject:
Hobbies
Subject:
Hobbies and games
Subject:
Time
Subject:
Sundials
Subject:
General Crafts & Hobbies
Subject:
Science Reference-General
Subject:
Applied Sciences
Copyright:
Edition Description:
Trade Paper
Series Volume:
no. 12
Publication Date:
19730631
Binding:
TRADE PAPER
Language:
English
Illustrations:
Yes
Pages:
230
Dimensions:
8.5 x 5.38 in 0.63 lb

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Sundials, Their Theory and Construction Used Trade Paper
0 stars - 0 reviews
$4.50 In Stock
Product details 230 pages Dover Publications - English 9780486229478 Reviews:
"Synopsis" by , Far and away the best, most thorough coverage of ideas, mathematics concerned, types, construction, adjusting anywhere. Simple, non-technical treatment allows even children to build several of these dials. Over 100 illustrations.
"Synopsis" by ,
A rigorous appraisal of sundial science includes mathematical treatment and pertinent astronomical background, plus a nontechnical treatment so simple that several of the dials can be built by children. 106 illustrations.
"Synopsis" by ,
A rigorous appraisal of sundial science includes mathematical treatment and pertinent astronomical background, plus a nontechnical treatment so simple that several of the dials can be built by children. 106 illustrations.
"Synopsis" by ,
This fascinating approach to sundials offers a rigorous appraisal of the science of sundials, including mathematical treatment and pertinent astronomical background. It also provides a nontechnical treatment simple enough that several of the dials can be built by children. 106 illustrations.
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