- 1788 – Wolfgang Mozart completes his Symphony No. 40 in G minor (K550).
- 1837 – The first commercial use of an electric telegraph is successfully demonstrated by William Cooke and Charles Wheatstone on 25 July 1837 between Euston and Camden Town in London.
- 1908 – Ajinomoto is founded. Kikunae Ikeda of the Tokyo Imperial University discovers that a key ingredient in Konbu soup stock is monosodium glutamate (MSG), and patents a process for manufacturing it.
- 1920 – Telecommunications: the first transatlantic two-way radio broadcast takes place.