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I have seen that Euclid's Elements was written 300 BC and first set in type in 1482. Are there scans of that old versions available?

How were formulas / images added to the books created with printing presses? Can / could formulas / images also be printed automatically or had they to draw every single image again for every single new book?

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Euclid's Elements of Geometry (1482)

In the 1455 Gutenberg bible the illustrations were hand-drawn after printing.The illustrations in the 1482 Elements were printed. [In some copies the diagrams were colored in by hand, see right image above.]

In a foreword the printer Erhard Ratdolt attributed the prior lack of printed mathematical works to the difficulty produced by the diagrams, and adds "Having perceived, that it was this alone that formed an obstacle to something that would be useful to all, I have achieved, by applying myself to the problem and not without putting in much hard work, that geometrical figures can be composed with the same ease as movable type".

There appears to be some uncertainty on the nature of Ratdolt's method, which he did not explain any further. The common practice in the 15th century was to use woodcuts for illustrations, as discussed by Bowers. Alternatively, according to this source, Ratdolt had devised elementary geometrical forms in type metal which could be combined to form figures which, being in metal, could be printed at the same time as the typeset page.


The OP asks also for early printed formulas. The earliest appearance of + and - symbols appears to be Johannes Widmann (1489), see image below. Notation that would need subscript or superscripts (such as exponents) was generally avoided, as were fractions with a bar. A quote: The bar is generally found in Latin manuscripts of the late Middle Ages, but when printing was introduced it was frequently omitted, doubtless owing to typographical difficulties. This inference is confirmed by such books as Rudolff's Kunstliche rechnung (1526), where the bar is omitted in all ordinary fractions but is inserted in fractions printed in larger type and those having large numbers.

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That looks awesome! –  moose Aug 11 at 19:34
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Although I see some images, I can't find any formula. Didn't they use fractions / systems of equations / exponentiation / roots at that time? If they used it: Was that also made with woodcut? Isn't woodcut too weak to be used with printing presses? –  moose Aug 11 at 20:32
    
@moose --- the link to Bowers' article that I added explains that wood blocks were preferred for illustrations over metal plates because they can take more wear before becoming unusable. Still, Ratdolt's comment suggests he used specially designed metal type for the drawings as well as for the text. –  Carlo Beenakker Aug 11 at 21:56
    
@moose --- I also added some info on early use of formulas –  Carlo Beenakker Aug 12 at 8:53

Printing requires pressing the mould against a hard surface with only a paper in between. This damages wood carvings, so they have a limited number of prints. In modern times, Escher, for example, used a Japanese technique that involved pressing the prints with bones. This was nicer to the engraving, but very time consuming and not so suitable for line production.

In later times, the chemistry allowed engraving metal, the etching. A sheet of copper is covered in a varnish, and the drawings are done removing selectively this layer. When finished, the sheet is submerged in acid, that corrodes the exposed metal, but leaves the areas protected by varnish.

detail

As adding any non text to printed books was so difficult, mathematical notation developed slowly. For example, the equal sign was not invented until 1557. Before that, they just spelled it out (or used Latin abbreviations). More advanced symbols, requiring reordering the elements of the text (the equal sign is just one character more in text), may have been invented before, but it would take a lot of effort to communicate to the rest of mathematicians.

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How do you know that it was 1557? –  moose Aug 11 at 21:58
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@moose enciclopedic memory, id est, I remembered to look it up in Wikipedia. (I forgot to add the link). –  Davidmh Aug 11 at 22:01

The following references describe mathematical printing in the 1950s, before it became too expensive and degenerated into illegible typescript:

The Printing of Mathematics by T. W. Chaundy, P. R. Barrett and Charles Batey, Oxford University Press, 1954.

Setting Mathematics by Arthur Phillips, in The Monotype Recorder 40 (4), Winter 1956.

Printing Mathematics by Peter Basnett, in Eureka 23 (1960) 11-13.

At that time, ordinary text (novels and newspapers) was set using the Linotype system, in which the compositor would use a huge keyboard to select characters and then they would be set in molten lead a whole line at a time.

However, this was unsuitable for mathematics and the "state of the art" was the Monotype Four Line System, which had movable type. The following piece of nonsense is a block provided by Monotype and used in the Eureka article:

enter image description here

Each letter is set on a block (shown in grey) that occupies space on one of the four lines. However, the $g$, $X$, $b$ and $Y$ overhang their blocks and are supported by spacer blocks (white) in the other line.

You could add big integral or summation signs in front of such a fractional expression, and (I think) a $d x$ vertically centered after it.

Here is the Eureka article but I will happily delete it if the author or current editor objects.

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I tried to fix the LaTeX, but I'm not sure this is what you intended; if I just enter your text into a LaTeX processor it complains with "Ambiguous; you need another { and }". –  Carlo Beenakker Aug 17 at 10:26
    
LaTeX --> image, for clarity. –  Carlo Beenakker Aug 17 at 12:13

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