Telharmonium

Rarity: Common

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At a glance

Class

Invention

Domain

Arts and letters

Knowledge cost

3

In collections

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What Wikipedia says

The Telharmonium (also known as the Dynamophone) was an early electrical organ, developed by Thaddeus Cahill c. 1896 and patented in 1897. The electrical signal from the Telharmonium was transmitted over wires; it was heard on the receiving end by means of "horn" speakers.

Excerpt from the Wikipedia article “Telharmonium”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

Image: User Chris 73 on en.wikipedia, Public domain, via Wikimedia Commons.