Who was the French professor that the Robert brothers built the world's first hydrogen balloon for?
Robert brothers Les Frères Robert were two French brothers. Anne-Jean Robert (1758–1820) and Nicolas-Louis Robert (1760–1820) were the engineers who built the world's first hydrogen balloon for professor Jacques Charles; which flew from central Paris on August 27, 1783. They went on to build the world's first manned hydrogen balloon, and on 1 December 1783 Nicolas-Louis accompanied Jacques Charles on a 2-hour, 5-minute flight. Their barometer and thermometer made it the first balloon flight to provide meteorological measurements of the atmosphere above the Earth's surface.
Jacques Genest Jacques Genest {'1': ", '2': ", '3': ", '4': "} ( ; born May 29, 1919 in Montreal, Quebec) is a Canadian physician and scientist. He is a professor at McGill University. Dr. Genest is best known for founding and leading several organizations related to clinical research in Québec and for his work on arterial hypertension.