Diagram archive
GID: 2_2
Designation: Descartes: Circular Diatonic Scale 1
Description: Circular pitch diagrams. Describe diatonic scale with an ambiguous tone, different by a "schisma", i.e., a syntonic comma 81 : 80.

GID: 1_93
Year: 1650
Description: Constructed on a similar plan to image 92, this diagram from Descartes's Compendium musicae shows the interval sizes for a complete diatonic scale. The numbers around the edge are the lengths of string needed to produce the notes, assuming the lowest note comes from a string 540 units long. As the diagram illustrates, the use of just intonation produces some imperfections, here dealt with by having two different versions of one of the pitches, separated by a 'schisma' (syntonic comma).


GID: 1_100
Year: 1653
Description: 1653_descartes_compendium_en_032_diatonicCircle_1.jpg


GID: 1_104
Year: 1653
Description: 1653_descartes_compendium_en_074_animadv_diatonicScale_01.jpg


GID: 1_106
Year: 1653
Description: 1653_descartes_compendium_en_076_animadv_diatonicScale_03.jpg


GID: 1_110
Year: 1668
Description: 1668_descartes_buzon_2012_100_A.jpg


GID: 1_113
Year: 1672
Description: The English music theorist Thomas Salmon proposed reforms of musical notation and tuning in the 1770s. The circular diagram that appears here possibly owes something to Descartes.


GID: 1_154
Year: 1635
Description: 1635_descartes_compendium_musicae__leiden_ms_copy__diatonic_scale_1.jpg


GID: 1_159
Year: 1640
Description: 1640_descartes_compendium_musicae__groningen_ms_copy__diatonic_scale_1.jpg


GID: 1_83
Year: 1628
Description: 1628_beeckman 170v-171r_diatoniccircles_detail_a.jpg




gid: 2_2 / keyword: pitch diagram / id_keyword: 1
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