Which physicist developed the uncertainty principle while working as Niels Bohr’s assistant?

The physicist who developed the uncertainty principle while serving as Niels Bohr’s assistant is Werner Heisenberg.1

Heisenberg held this position at Bohr’s institute in Copenhagen during the 1926–1927 academic year. It was during this time that his ongoing discussions with Bohr culminated in the formulation of the uncertainty principle, which states that the position and momentum of a particle cannot both be measured exactly at the same time. This discovery became a cornerstone of the Copenhagen interpretation of quantum mechanics.12