circular-disk

Updated: May 20, 2025

All this my own ears heard spoken to me with unmistakable distinctness by the then circular-disk armature of just such another little electro-magnet as this I hold in my hand." Thomson pronounced Bell's telephone "the most wonderful thing he had seen in America."

Walter Kellogg Towers - Masters of Space: Morse, Thompson, Bell, Marconi, Carty