🧬 Women & Trans Pioneers in STEM – Timeline

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• 1786 – Caroline Herschel: Astronomer who became the first woman to receive a salary for scientific work. She discovered several comets and contributed significantly to the cataloguing of nebulae and star clusters, helping lay early foundations for modern astronomy.
• 1843 – Ada Lovelace: Wrote the first published computer algorithm while translating and annotating Charles Babbage’s work on the Analytical Engine. Ada went far beyond translation—she envisioned machines capable of manipulating symbols, not just numbers, foreseeing concepts central to modern computing more than a century early.
• 1858 – Florence Nightingale: Pioneered modern statistical visualization and evidence-based public health. Her “coxcomb” diagrams demonstrated how statistical analysis could guide medical reform and policy.
• 1873 – Ellen Swallow Richards: First woman admitted to MIT and a pioneering chemist who helped found environmental chemistry and modern public health sanitation science.
• 1903 & 1911 – Marie Curie: First woman to win a Nobel Prize and the only person to receive Nobel Prizes in two different scientific fields. Her research on radioactivity transformed physics, chemistry, and medicine.
• 1900s – Mileva Marić: Serbian physicist and mathematician who studied with Albert Einstein at the Swiss Federal Polytechnic. Historians continue to debate the extent of her contributions to early relativity work.
• 1908 – Henrietta Swan Leavitt: Discovered the relationship between a star’s brightness and its pulsation period, enabling astronomers to measure vast intergalactic distances.
• 1916 – Alice Ball: Chemist who developed the first effective injectable treatment for leprosy, known as the “Ball Method,” which became the standard therapy for decades.
• 1918 – Emmy Noether: Mathematician whose theorem connecting symmetry and conservation laws became one of the most fundamental principles in modern theoretical physics.
• 1921 – Edith Clarke: First woman professionally employed as an electrical engineer in the United States, contributing key mathematical tools for power transmission engineering.
• 1925 – Cecilia Payne-Gaposchkin: Demonstrated that stars are primarily composed of hydrogen and helium, overturning long-standing astronomical theory.
• 1936–1945 – Bibha Chowdhuri: Indian particle physicist who conducted early cosmic-ray research and helped observe mesons using photographic plates.
• 1938 – Lise Meitner: Helped explain nuclear fission, revealing how atomic nuclei could split and release enormous energy.
• 1940s – The ENIAC Six: Kay McNulty, Betty Jennings, Betty Snyder, Marlyn Wescoff, Frances Bilas, and Ruth Lichterman were pioneering computer scientists and the first programmers of the ENIAC, developing the foundations of modern programming.
• 1941 – Hedy Lamarr: Co-developed frequency-hopping spread spectrum technology, later foundational to Wi-Fi, Bluetooth, and GPS.
• 1949 – Dorothy Vaughan: NASA mathematician who became the first Black woman supervisor at the agency and helped lead the transition to electronic computing.
• 1952 – Rosalind Franklin: Produced X-ray diffraction images of DNA (including Photo 51), providing crucial evidence for the discovery of the DNA double helix.
• 1952–1960s – Grace Hopper: Computer scientist who developed one of the first compilers and helped create COBOL, transforming programming into more human-readable languages.
• 1957 – Chien-Shiung Wu: Experimental physicist whose Wu Experiment demonstrated the violation of parity symmetry in weak nuclear interactions.
• 1958 – Mary Jackson: Became NASA’s first Black female engineer and contributed to aerodynamics research.
• 1960s – Katherine Johnson: Mathematician whose orbital mechanics calculations were essential for NASA’s Mercury and Apollo missions.
• 1960s – Frances E. Allen: Computer scientist who pioneered compiler optimization techniques and parallel computing research at IBM. She later became the first woman to receive the Turing Award (2006).
• 1960s–1970s – Lynn Margulis: Developed the endosymbiotic theory explaining how complex cells evolved through symbiosis between microorganisms.
• 1967 – Jocelyn Bell Burnell: Discovered pulsars while analyzing radio astronomy data as a graduate student.
• 1969 – Margaret Hamilton: Led the Apollo software engineering team that developed the onboard flight software enabling the Moon landing.
• 1970s – Vera Rubin: Provided key observational evidence for dark matter through galaxy rotation curves.
• 1970s – Annie Easley: NASA computer scientist who contributed to rocket propulsion and early software systems.
• 1970s–1980s – Lynn Conway: Computer scientist who helped revolutionize microchip design and VLSI architecture.
• 1972 – Karen Spärck Jones: Computer scientist who introduced inverse document frequency (IDF), a foundational concept used in modern search engines and information retrieval systems.
• 1983 – Sally Ride: Physicist and astronaut who became the first American woman in space.
• 1985 – Radia Perlman: Invented the Spanning Tree Protocol, a key technology enabling scalable Ethernet networking.
• 1985 – Sophie Wilson: Co-designed the ARM processor architecture, now powering billions of devices worldwide.
• 1986 – Barbara Liskov: Computer scientist whose work on data abstraction and the Liskov Substitution Principle shaped modern software engineering.
• 1992 – Mae Jemison: Physician and astronaut who became the first Black woman in space.
• 2005 – Limor Fried (Ladyada): Founder of Adafruit Industries and a pioneer of open-source hardware education.
• 2014 – Maryam Mirzakhani: First woman to win the Fields Medal for groundbreaking work in hyperbolic geometry and dynamical systems.
• 2015 – Katie Bouman: Computer scientist who helped develop the algorithm used to generate the first image of a black hole from Event Horizon Telescope data.
• 2018 – Donna Strickland: Laser physicist awarded the Nobel Prize in Physics for work on chirped pulse amplification, enabling high-intensity laser applications.
• 2010s – Fei-Fei Li: Led the ImageNet project, which catalyzed the deep learning revolution in computer vision and artificial intelligence.
• 2010s – Lucianne Walkowicz: Astrophysicist studying stellar magnetism and planetary systems while advocating for ethical and inclusive scientific practices.
• 2015 – Arlan Hamilton: Founder of Backstage Capital, investing in startups led by underrepresented founders.
• 2020s – Dr. Chanda Prescod-Weinstein: Theoretical physicist working on dark matter and cosmology while advocating for equity and inclusion in science.