Hertha Ayrton (née Phoebe Sarah Marks) (1854–1923), electrical engineer, physicist and campaigner for women’s suffrage. This portrait is assumed to have been taken to mark the award to Hertha of the Royal Society’s Hughes Medal for original research in November 1906, in recognition of her investigations into the electric arc and the formation of sand ripples. Hertha is photographed in the drawing-room laboratory of her London home, posed before one of the experimental troughs she used to research the formation of sand ripples and water vortices. Hertha’s first paper on this subject was read before the Royal Society in 1904, some two years after her nomination for a Fellowship in 1902.
- © 2015 The Author(s) Published by the Royal Society.