1641 in science

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The year 1641 in science and technology involved some significant events.

Medicine

The sealed thermometer is developed with Ferdinand II, Grand Duke of Tuscany, using a glass tube containing alcohol, which freezes well below the freezing point of water.
Samuel Winslow is granted the first patent in North America by the Massachusetts General Court for a new saltmaking process.^[1]

March – Menno van Coehoorn, Dutch military engineer (died 1704)
July 30 – Regnier de Graaf, Dutch physician and anatomist who discovered the ovarian follicles, which were later named Graafian follicles (died 1673)
September 26 – Nehemiah Grew, English botanist and physician who made some of the early microscopical observations of plants (died 1712)

↑ Cortada, James W. (1998). "Rise of the knowledge worker". Resources for the Knowledge-based Economy. Knowledge Reader Series. 8. Butterworth-Heinemann. p. 141. ISBN 0-7506-7058-4.

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