Today is...
Saturday
4
May
Events on this day
Born on this day
Friedrich Wilhelm Bessel
Friedrich Wilhelm Bessel was a German mathematician and astronomer.
30th week in year
22 July 2024
Important eventsBack
The dimonstration of the lifting power of hot air8.8.1709
Wikipedia (26 Jul 2013, 08:36)
It is known that Bartolomeu de Gusmão was working on this principle at the public exhibition he gave before the Court on August 8, 1709, in the hall of the Casa da Índia in Lisbon, when he propelled a ball to the roof by combustion. The king rewarded the inventor by appointing him to a professorship at Coimbra and made him a canon.
