Nierop, Dirck Rembrandtszoon van
- Rudolf A. Rasch
(b Nieuwe Niedorp, North Holland, c1610; d Nieuwe Niedorp, 1682). Dutch amateur scientist. His manuscript notes (dated 1642–4) in a copy of Jacob Vredeman's Isagoge musice (1618; copy now in NL-LE ) suggest that this book played an important part in his music education. It is said that he also benefited from talking to Descartes when the latter was at Egmond, near Alkmaar, around 1645–8. Van Nierop wrote many popular scientific books and booklets in Dutch, disseminating among laymen recent discoveries in, for example, astronomy, physics, mathematics and navigation. His brief music treatise Wis-konstige musyka (‘Mathematical music’; Amsterdam, 1659) is of the same nature. In four sections, it includes the fundamentals of acoustics and musical proportions, instructions on the tuning of the cittern and harpsichord, and something about Greek music theory. Further musical material may be found in his Tweede deel op de wiskonstige rekening...