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| 1807 |
| | | A Scottish clergyman, Alexander Forsyth, invents the percussion cap to help in his pursuit of wildfowl | |
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| 1814 |
| | | The Times, England's oldest daily newspaper, becomes the first to print on a steam press | |
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| 1815 |
| | | English chemist Humphry Davy invents a safety lamp that shields the naked flame and prevents explosions in mines | |
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| 1816 |
| | | René Laënnec, reluctant to press his ear to the chest of a young female patient, finds a solution in the stethoscope | |
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| 1822 |
| | | French physicist Augustin Jean Fresnel develops a more efficient form of lens for use in lighthouses | |
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| 1835 |
| | | Fox Talbot exposes the first photographic negatives, among them a view looking out through an oriel window in Lacock Abbey | |
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| 1838 |
| | | US inventor Samuel Morse gives the first public demonstration, in Philadelphia, of his electric telegraph | |
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| 1841 |
| | | Fox Talbot patents the 'calotype', introducing the negative-positive process that becomes standard in photography | |
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| 1844 |
| | | Samuel Morse and his assistant Alfred Vail complete the first telegraph line, between New York and Baltimore | |
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| 1846 |
| | | The self-contained metal cartridge, with a percussion cap in its base, is patented by a Paris gunsmith named Houiller | |
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