No text, but a visual code

[Antonio García Jiménez]

Sorry David but I disagree. Wikipedia is not always rigorously written.

In this 17th century book you can see a table for astronomical calculations with the symbol of the small circle on the abbreviation of degree (Gr)


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Florian Cajori, an expert, said that the symbol came into use in the second half of the 16th century.

I believe that this symbol was used because of its spherical shape and that is why I wonder if the Voynich glyph (o) does not mean the same thing