Terms/Questions per Day
Terms
62 new/unreviewed 62 total
Term
James Marshall theorized the existence of --------------, believing it was possible to harness and use them to send signals.
Definition
Electromagnetic Waves
New/Unreviewed
Term
This tool, invented in the 1840s, was the precursor to radio technology that sent electrical impulses from a transmitter through a cable to a reception point.
Definition
Telegraph
New/Unreviewed
Term
After the development of the telegraph, but before the development of radio, what form of communication served as the primary means of sending coded messages?
Definition
Wireless Telegraphy
New/Unreviewed
Practice Test Scores
Practice Tests
0 total
(None) Completed practice tests will show up here