1644 in science
The year 1644 AD in science and technology involved several significant events in mathematics, technology, and medicine.
Mathematics
- The Basel problem is posed by Pietro Mengoli, and will puzzle mathematicians until solved by Leonhard Euler in 1735.
Technology
- Jacob [van Eyck] collaborates with the bellfounding duo Pieter and [François Hemony] to create the first tuned carillon in Zutphen.
Publications
- Jan Baptist van Helmont publishes Dageraad ofte Nieuwe Opkomst der Geneeskunst.
Births
- 25 September – Ole Rømer, Danish astronomer who makes the first quantitative measurements of the speed of light
Deaths
- 2 July – William Gascoigne, English scientist
- 30 December – Jan Baptist van Helmont, Flemish chemist