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 (scientist)|William Gascoigne], English scientist
- 30 December – Jan Baptist van Helmont, Flemish chemist