| HC
Dunwoody American patents the radio detector crystal with carborundum,
an essential element for the new industry of wireless telegraph. One of
the first components for the detection of radio waves, the crystal
carborundum allows the current entry in one sense , so that only the
top half of the EU modulated get through. The work of
Dunwoody on
a crystal enabled the first radio amateurs to build the first receivers
and hear radio previews. The carborundum is composed of
silicon
carbide and other materials. |
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