By exist, I mean something you’d be able to study. For example, dinosaurs existed well before 1800 but that doesn’t mean there was a good way for the layman to learn about them.
By exist, I mean something you’d be able to study. For example, dinosaurs existed well before 1800 but that doesn’t mean there was a good way for the layman to learn about them.
Nope! The electric siren wasn’t invented until 1905 by William Box. The steam locomotive hadn’t been invented until 1802 when Richard Trevithick built the first. Steam engines in general were still in their relative infancy by 1800, and the closest we had to a warning siren before 1800 was a device invented by John Robison that was used to power some of the pipes in a musical organ rather than warn anyone.