births

Hertha Marks Ayrton, Polish-British engineer, mathematician, and physicist. (died 1923)

Historical image related to Hertha Marks Ayrton, Polish-British engineer, mathematician, and physicist. (died 1923) from April 28, 1854

Hertha Ayrton

English engineer, mathematician and inventor

Phoebe Sarah Hertha Ayrton was an English electrical engineer, mathematician, physicist and inventor, and suffragette. Known in adult life as Hertha Ayrton, born Phoebe Sarah Marks, she was awarded the Hughes Medal by the Royal Society for her work on electric arcs and ripple…
Source: Wikipedia (CC BY-SA)

April 28

Day of the year

April 28 is the 118th day of the year in the Gregorian calendar; 247 days remain until the end of the year.
Source: Wikipedia (CC BY-SA)