April 2 –
George Brayton obtains a United States
patent for a constant pressure internal combustion
engine, initially using vaporized gas, and marketed as 'Brayton's Ready Motor'.[13][14]
^Rice, A. L. (1999).
"The Challenger Expedition". Understanding the Oceans: Marine Science in the Wake of HMS Challenger. London: Routledge. pp. 27–48.
ISBN978-1-85728-705-9. Retrieved 8 May 2011.
^
abCrilly, Tony (2007). 50 Mathematical Ideas you really need to know. London: Quercus.
ISBN978-1-84724-008-8.
^Huntington, G. (1872-04-13).
"On Chorea". Medical and Surgical Reporter of Philadelphia. 26 (15): 317–321.
^Monoyer, F. (1872). "Sur l'introduction du système métrique dans le numérotage des verres de lunettes et sur le choix d'une unité de réfraction". Annales d'Oculistiques. 68: 101.
April 2 –
George Brayton obtains a United States
patent for a constant pressure internal combustion
engine, initially using vaporized gas, and marketed as 'Brayton's Ready Motor'.[13][14]
^Rice, A. L. (1999).
"The Challenger Expedition". Understanding the Oceans: Marine Science in the Wake of HMS Challenger. London: Routledge. pp. 27–48.
ISBN978-1-85728-705-9. Retrieved 8 May 2011.
^
abCrilly, Tony (2007). 50 Mathematical Ideas you really need to know. London: Quercus.
ISBN978-1-84724-008-8.
^Huntington, G. (1872-04-13).
"On Chorea". Medical and Surgical Reporter of Philadelphia. 26 (15): 317–321.
^Monoyer, F. (1872). "Sur l'introduction du système métrique dans le numérotage des verres de lunettes et sur le choix d'une unité de réfraction". Annales d'Oculistiques. 68: 101.