Coherer
[kәu'hiәrә]
Examples
- Then, suddenly, came the sharp click of the tapper as it struck the coherer. Rupert S. Holland. Historic Inventions.
- The coherer _j_ has two metal pole pieces, _j1 j2_, separated by silver and nickel filings. Edward W. Byrn. The Progress of Invention in the Nineteenth Century.
- This was in 1894, and the combination of oscillator and coherer actually formed the first real wireless set. Rupert S. Holland. Historic Inventions.
- The coherer, invented by Branly in 1891, is a glass tube containing metal filings between two circuit terminals. Edward W. Byrn. The Progress of Invention in the Nineteenth Century.
- Professor Oliver Lodge named this device of Branly’s a coherer, and when he found that it was more sensitive than the Hertz detector he combined it with the Hertz oscillator. Rupert S. Holland. Historic Inventions.
- The wave falls on conducting material and, the spark gap being replaced by a coherer, the metallic filings magnetically cling together, closing the relay circuit, so that a signal is made. Various. The Wonder Book of Knowledge.
- On breaking the current, a slight tap on the coherer or other means breaks the cohesion of the filings and the relay circuit is broken. Various. The Wonder Book of Knowledge.
Editor: Theresa