well i couldnt think of much for the 19th century besides all the small wars that popped up so i went a did a little research. didnt really find much but here is what i did find out. science leaped foward with the start of anthropology, archeology and cell biology along with the theory of evelution, astronomy geology, electricty was discovered, the telephone, reserch labs came into exsistance attached to universities. explorations reached both the north and south poles. some of the greatest scientific discoverys came at the end of the century. here is a list of all the inventions in the first half of the century hope this will be of some help
1800
* Frenchmen, J.M. Jacquard invents the Jacquard Loom.
* Count Alessandro Volta invents the battery
1804
* Freidrich Winzer (Winsor) was the first person to patent gas lighting.
* Richard Trevithick, an English mining engineer, developed the first steam-powered locomotive. Unfortunately, the machine was too heavy and broke the very rails it was traveling on.
1809
* Humphry Davy invents the first electric light - the first arc lamp.
1810
* German, Frederick Koenig invents an improved printing press.
* Peter Durand invents the tin can.
1814
* George Stephenson designs the first steam locomotive.
* The first plastic surgery is performed in England.
* German, Joseph von Fraunhofer invents the spectrocope for the chemical analysis of glowing objects.
* Joseph Nicéphore Niépce was the first person to take a photograph. He took the picture by setting up a machine called the camera obscura in the window of his home in France. It took eight hours for the camera to take the picture.
1815
* Humphry Davy invents the miner's lamp.
1819
* Samuel Fahnestock patents a "soda fountain".
* René Laënnec invents the stethoscope.
1823
* Mackintosh (raincoat) invented by Charles Mackintosh of Scotland.
1824
* Professor Michael Faraday invents the first toy balloon.
* Englishmen, Joseph Aspdin patents Portland cement, the modern building material.
1825
* William Sturgeon invented the electromagnet.
1827
* John Walker invents the modern matches.
* Charles Wheatstone invents the microphone.
1829
* American, W.A. Burt invents a typewriter.
* Frenchmen, Louis Braille invents braille printing.
* William Austin Burt patents a typographer, a predecessor to the typewriter.
1830
* Frenchmen, B. Thimonnier invents a sewing machine.
1831
* American, Cyrus H. McCormick invents the first commercially successful reaper.
* Michael Faraday invents a electric dynamo.
1832
* Englishmen, Louis Braille invents the stereoscope.
1834
* Henry Blair patents a corn planter, he is the second black person to receive a U.S. patent.
* Jacob Perkins invents an early refrigerator (really an ether ice machine).
1835
* Englishmen, Henry F. Talbot invents Calotype photography.
* Solymon Merrick patents the wrench.
* Englishmen, Francis Pettit Smith invents the propeller.
* Charles Babbage invents a mechanical calculator.
1836
* Francis Pettit Smith and John Ericcson co-invent the propellor.
* Samuel Colt invented the first revolver.
1837
* Samuel Morse invents the telegraph.
* English schoolmaster, Rowland Hill invents the postage stamp.
1838
* Samual Morse invents Morse Code.
I839
* American, Thaddeus Fairbanks invents platform scales.
* American, Charles Goodyear invents rubber vulcanization.
* Frenchmen, Louis Daguerre and J.N. Niepce co-invent Daguerreotype photography.
* Kirkpatrick Macmillan invents a bicycle.
* Welshmen, Sir William Robert Grove conceives of the first hydrogen fuel cell.
1840
* Englishmen, John Herschel invents the blueprint.
1841
* Samuel Slocum patents the stapler.
1842
* Joseph Dart builds the first grain elevator.
1843
* Alexander Bain of Scotland, invents the facsimile.
1844
* Englishmen, John Mercer invents mercerized cotton.
1845
* American, Elias Howe invents a sewing machine.
* Robert William Thomson patents the first vulcanised rubber pneumatic tire.
1846
* Dr. William Morton, a Massachusetts dentist, is the first to use anesthesia for tooth extraction.
1847
* Hungarian, Ignaz Semmelweis invents antisceptics.
1848
* Waldo Hanchett patents the dental chair.
1849
* Walter Hunt invents the safety pin.
1850
* Joel Houghton was granted the first dishwasher patent in 1850. The machine was made of wood and required you to hand-turn a wheel that caused water to splash on the dishes. Houghton's machine barely worked. The first practical dishwasher was invented by a woman named Josephine Cochran in 1886. Dishwashers, however, did not begin appearing in homes until the 1950s.