22 April 2015


The invention: 

A medically safe alternative to X-ray examination,
ultrasound uses sound waves to detect fetal problems in pregnant

The people behind the invention:

Ian T. Donald (1910-1987), a British obstetrician

Paul Langévin (1872-1946), a French physicist

Marie Curie (1867-1946) and Pierre Curie (1859-1906), the French husband-and-wife team that researched and developed the field of radioactivity

Alice Stewart, a British researcher