Graduated with BSc in Engineering Physics in 1953, then well after retirement, an MSc in Astronomy in 2009. I have a deep interest in the physical sciences and find the questions in this site to be a great learning experience.
Q&A for active researchers, academics and students of physics
Q&A for power users of Apple hardware and software
Q&A for astronomers and astrophysicists
Q&A for those interested in the geology, meteorology, oceanography, and environmental sciences
Q&A for people interested in the history and origins of science and mathematics