Electricity seems to have become known and adapted widespread in the early 19th century. With people such as Nikola Tesla and Thomas Alva Edison it eventually entered our daily lives as a source of light and warmth.
Q: When/What was the first documented mention of mechanically generated electricity?
By mechanically I mean electricity generated through mechanical action (e.g. a wheel turning).
This question is asking about cases where the generated electricity has furthermore been used to power any contraption with, at least, an apparent use e.g.:
- powering a spark-gap transmitter to make electricity visible
- creating a charge that eventually unloads itself through touch or something like that
-> not cool