Lídia Coelho Salgueiro (1917–2009) was a Portuguese atomic and nuclear physicist whose research and teaching played a meaningful role in establishing the experimental foundations of quantum physics in Portugal during the mid-20th century. While she is not widely known for groundbreaking theoretical contributions like Planck or Schrödinger, her work was essential in sustaining and advancing experimental research in quantum-related fields—often under challenging political conditions.
Her PhD thesis, Gamma Spectrum of Long-Life Derivatives of Radon, focused on gamma emissions arising from quantum transitions in unstable nuclei. Alongside her collaborators, she measured fine structures and emission intensities of specific X-ray lines, using spectroscopic techniques rooted in quantum principles governing atomic transitions.
Following political purges in 1947 that severely disrupted scientific research in Lisbon, Salgueiro played a key role in keeping her research group active. She continued advancing experimental studies related to radiation at atomic and nuclear scales, helping maintain Portugal’s connection to the rapidly evolving global quantum research landscape.
Over more than three decades at the University of Lisbon, she taught quantum mechanics, atomic physics, optics, and X-ray spectroscopy—shaping generations of students in core quantum disciplines. She also authored textbooks on atomic and nuclear physics, strengthening quantum-centered scientific education across Portugal. In 1976, she founded the Atomic Physics Centre at the University of Lisbon, further consolidating experimental research informed by quantum theory.
Beyond research and teaching, Salgueiro contributed to science communication through historical and philatelic works on physics, including Atomic Physics through Postage Stamps, helping make complex quantum-related concepts more accessible to the public.
Lídia Salgueiro’s legacy lies in her experimental and educational contributions. By producing empirical data, nurturing scientific talent, and sustaining research during politically difficult times, she helped keep quantum experimental physics alive in Portugal and connected to the broader scientific community.
Inspired by pioneers like Lídia Salgueiro—and looking ahead to the future they helped make possible—
As we step into 2026, SheQuantum sends warm wishes to the global quantum community for a year filled with discovery, innovation, and impact.
We take special pride in celebrating:
🔹 Women shaping the future of quantum today
🔹 Girls and young minds aspiring to enter this fascinating field
🔹 All allies working to make quantum more inclusive and diverse
Here’s to 2026 and beyond—a future where quantum innovation is powered by diverse voices, bold ideas, and limitless potential.
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