OSRD awards Maria Telkes a Certificate of Merit for her solar distillation work (year documented; exact day not).
In 1945, the U.S. Office of Scientific Research and Development (OSRD) recognized Mária Telkes with a Certificate of Merit for her wartime work on solar distillation of seawater. For editorial consistency this project is placed on 1 January 1945, though surviving sources document only the year, not the specific presentation day.
During World War II, Telkes designed a compact solar still that converted seawater into drinkable water using the sun’s heat and condensation. The device could produce roughly a liter of potable water per day and was incorporated into emergency kits for lifeboats and downed aircrews. This innovation saved lives by providing a reliable source of fresh water in the open ocean, where dehydration was a constant threat.
The OSRD Certificate of Merit signaled high‑level governmental appreciation of her work at a time when women scientists were frequently overlooked. It validated solar technology as a serious component of wartime engineering and highlighted Telkes’s ability to translate theoretical knowledge into robust field equipment. Although details of the ceremony are sparse, the honor marks a crucial turning point: her solar distiller moved from an experimental idea to a recognized military technology, helping secure her reputation as a leading figure in applied solar energy.