Mária Telkes
Who was Mária Telkes?
Hungarian–American scientist and inventor (1900–1995)
Biographical data adapted from Wikipedia’s article on Mária Telkes (CC BY-SA 4.0).
Biography
Mária Telkes, born on December 12, 1900, in Budapest, Hungary, became a leading scientist in solar energy technology during the 20th century. She studied at Eötvös Loránd University in Budapest and moved to the United States in 1925 to start her career as a biophysicist. She became a U.S. citizen in 1937 and joined the Massachusetts Institute of Technology two years later, focusing on practical uses for solar energy.
At MIT, Telkes saw solar energy as a practical solution to real-world problems. During World War II, she invented a solar-powered water distillation device that turned seawater into drinking water. This device, used late in the war, saved the lives of airmen and sailors stranded at sea. Her goal was to use this technology to help people in dry and poor areas who lacked clean water.
After the war, Telkes became an associate research professor at MIT and kept researching solar thermal systems. In the late 1940s, she worked with architect Eleanor Raymond to build the Dover Sun House in Massachusetts, one of the first houses in the U.S. heated entirely by solar energy. The house used a sodium sulfate compound, identified by Telkes, to store and release heat efficiently, which was a major discovery in solar thermal storage.
In 1953, Telkes and Raymond designed a solar oven that worked at different latitudes and was easy enough for children to use. Throughout her career, Telkes held more than twenty patents for solar heating, cooling, and desalination devices and methods. Her colleagues called her The Sun Queen, highlighting her dedication and skill in using solar energy to solve practical problems.
Telkes received many awards for her science and engineering achievements. In 1952, she was the first to receive the Society of Women Engineers Achievement Award. She later got a lifetime achievement award from the National Academy of Sciences and a Building Research Advisory Board Award in 1977. In 2012, she was inducted into the National Inventors Hall of Fame. She returned to Budapest in her later years and passed away there on December 2, 1995, just twelve days shy of her 95th birthday.
Before Fame
Mária Telkes grew up in Budapest during the last days of the Austro-Hungarian Empire, a city bustling with European intellectual and cultural life. She pursued rigorous scientific studies at Eötvös Loránd University, one of Hungary's top schools, where she built the diverse foundation that would define her career. Her education covered physics, chemistry, and biology at a time when such cross-training was rare, especially for women.
When she moved to the United States in 1925, she became part of a wave of European scientists who brought valuable skills to American research during the interwar years. Initially working as a biophysicist, she found solar energy both an intellectual challenge and a practical concern. By the time she joined MIT in 1939, she was convinced that solar power could move from a scientific idea to practical technology that would improve daily life, especially for those without reliable energy or clean water.
Key Achievements
- Invented a solar-powered seawater distillation device used in World War II military life raft kits, saving lives of stranded airmen and sailors
- Co-designed the Dover Sun House with architect Eleanor Raymond, one of the first solar-heated residential buildings in the United States
- Became the first-ever recipient of the Society of Women Engineers Achievement Award in 1952
- Developed solar thermal storage methods using phase-change materials, laying groundwork for modern solar energy storage systems
- Inducted into the National Inventors Hall of Fame in 2012 in recognition of her more than twenty patents and decades of solar energy innovation
Did You Know?
- 01.Telkes identified sodium sulfate decahydrate, also known as Glauber's salt, as a cost-effective material for storing solar heat in the Dover Sun House, a choice driven by the compound's high latent heat capacity.
- 02.Her solar water distillation device was small enough to be included in emergency life raft kits and was issued to Allied military personnel during World War II.
- 03.Colleagues at MIT nicknamed her The Sun Queen due to her unwavering focus on solar energy research over several decades.
- 04.The Dover Sun House, which she designed with architect Eleanor Raymond in the 1940s, stored enough solar energy during daylight hours to heat the building through cold New England nights without any conventional fuel source.
- 05.Telkes registered more than twenty patents over the course of her career, covering innovations in solar heating, solar cooling, and solar-powered desalination technology.
Awards & Honors
| Award | Year | Details |
|---|---|---|
| National Inventors Hall of Fame | 2012 | — |
| Society of Women Engineers Achievement Award | 1952 | — |