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Title: Diagram of black hole.
Identifier(s): graphics:3096; APSdigobj3393
Description: Diagram of black hole, with typed notes on gravitational fields, glued into notebook.; Notebook: Relativity III, page 173.
Creator: Wheeler, John Archibald, 1911-2008
Source: John Archibald Wheeler papers, [ca. 1950s-1970s] (Mss.B.W564); http://amphilsoc.org/mole/view?docId=ead/Mss.B.W564-ead.xml
Subject: Math & Physics ; Wheeler, John Archibald, 1911-2008; Relativity; Gravity
Date: 1955

Title: Eclipsis Solaris.
Identifier(s): graphics:3130; APSdigobj3382
Description: Diagram of an eclipse of the sun, 24 June 1778.
Creator: Freehauff, Daniel
Source: Astronomical calculations, 1778, 1779 (Mss.523.78.F87c); http://amphilsoc.org/mole/view?docId=ead/Mss.523.78.F87c-ead.xml
Subject: Math & Physics ; Eclipses; Astronomy--Early works to 1800
Date: 1778

Title: "...Circles of the sphere projected on the Meridian Stereographically."
Identifier(s): graphics:3133; APSdigobj3383
Description: Illustrations of the spheres projected on the Meridian.; Page 53
Creator: Dovaston, John,1740-1808
Source: Astronomical Notebook (Mss.522.D75); http://amphilsoc.org/mole/view?docId=ead/Mss.522.D75-ead.xml
Subject: Math & Physics ; Eclipses; Astronomy--Early works to 1800

Title: Magic Cyclovolute
Identifier(s): APSdigobj3384; APSdigobj3384
Description: Graphic representation of the magic squares first introduced by Benjamin Franklin, using overlapping circles.; Page 208
Creator: Nulty, E.
Source: Transactions of the American Philosophical Society (506.73.Am4t);
Subject: Math & Physics; Mathematics; Transactions of the American Philosophical Society
Date: 1837