Portrait of Hendrick de Hartog, Adriaan de Lelie, 1790

Portrait of Hendrick de Hartog, Adriaan de Lelie, 1790

canvas, h 79cm × w 64cm More details

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 distance while at sea.

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