Portrait of Hendrick de Hartog by Adriaan de Lelie (1755-1820), oil on canvas, 1790. Hendrick de Hartog taught mathematics at the Felix Meritis Society on Monday evenings. He had this portrait made when the Dutch East India Company (VOC) appointed him a navigation examiner. On the table are a telescope and a sextant. De Hartog had devised a new, viable arithmetic method for calculating lunar distances while at sea.

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Portrait of Hendrick de Hartog by Adriaan de Lelie (1755-1820), oil on canvas, 1790. Hendrick de Hartog taught mathematics at the Felix Meritis Society on Monday evenings. He had this portrait made when the Dutch East India Company (VOC) appointed him a navigation examiner. On the table are a telescope and a sextant. De Hartog had devised a new, viable arithmetic method for calculating lunar distances while at sea.

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Size: 4025px × 5210px
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Photo credit: © World History Archive / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: 1790., canvas, company, de, dutch, east, evenings., felix, hartog, hendrick, india, mathematics, meritis, monday, oil, portrait, society, taught