In what year was Nathan B. Stubbefield the first person to broadcast a human voice using a wireless telephone attached to ground electrodes?

In what year was Nathan B. Stubbefield the first person to broadcast a human voice using a wireless telephone attached to ground electrodes?

In what year was Nathan B. Stubbefield the first person to broadcast a human voice using a wireless telephone attached to ground electrodes?










a. 1892
b. 1776
c. 1899
d. 1893















Answer: A