The compression ice machine was invented by John Gorrie, a physician from Florida, in the 1840s. Gorrie's invention was the precursor to modern refrigeration technology and laid the groundwork for the development of refrigeration systems.
Dr. John Gorrie, a physician from Florida, is credited with inventing the first ice-making machine in the 1840s. Gorrie's machine was designed to provide a cooling system for his patients with yellow fever, but it laid the groundwork for modern ice machines used for refrigeration and food preservation.
Adolphe Sax, in the 1840s.
Adolphe Sax invented the saxophone in the 1840s.
Zero, the computer was yet to be invented.
It is unknown the exact year that Christmas crackers were invented. However, the earliest documentation of them was from the early 1840s.
It was invented in the 1840s by a men named Antoine Joseph
Adolphe Sax in the 1840s. See wikipedia http://en.wikipedia.org/wiki/Adolphe_Sax
The Morse system of telegraphy was invented by Samuel Finley Breese Morse in the 1840s.
first demonstrated by Daniel Colladon and Jacques Babinet in Paris in the early 1840s
In 1840 batteries hadn't been invented yet, so the cost was zero.
A member of the saxophone family of woodwind instruments invented by Belgian instrument designer Adolphe Sax in the 1840s, and patented in 1846.