One of the two pioneering female honorary members of the Royal Astronomical Society, Mary Somerville was a 19th-century polymath and science writer. Though she specialized in math and astronomy, she was also well-versed in botany and geology. The Connection of the Physical Sciences remains her most notable work.
David Brewster was a British scientist, inventor, and author. He conducted many experiments in physical optics, especially concerned with the study of the polarization of light. Fellow scientist William Whewell dubbed him the "father of modern experimental optics." He was also a pioneer in photography and invented an improved stereoscope. He wrote numerous works of popular science as well.
Scottish astronomer Thomas Henderson was the first to measure the parallax of the Alpha Centauri. He was also named the first Astronomer Royal of Scotland. Though initially trained as a lawyer, he later focused on his love for math and astronomy. He also taught at the University of Edinburgh.
Apart from being a renowned astronomer, Alexander Wilson was also a qualified surgeon and once co-owned a type-founding business, too. He pioneered the use of kites in meteorological research and also co-founded the Royal Society of Edinburgh. He has a lunar crater named after him.
The son of a carpenter, James Short was orphaned at 10 but later excelled in studied and became a renowned optician. He then focused on making telescopes and became the first to create parabolic mirrors which produced images without distortions in reflecting telescopes. He was later named a Fellow of The Royal Society.