Jonathan B. Peacock
LIS 391
During the second half of the last century scientists were searching the way to wireless communication. Many attempts made with electromagnetic waves
didn't lead to any result.
There were many scientific conquests which led to the comprehension of identity between light and electromagnetic action, that took Guglielmo Marconi
to his discovery, producing the device capable to make the electromagnetic waves travel the air.
Marconi then patented his invention in England. In 1897, the British Ministry of Posts gave him money and technicians to continue his experiments and
transmission distances became longer and longer: five, eight, fifteen, 30 and 100 kilometres. Radiotelegraphy had become a reality.
Marconi's invention was first used in sea rescues. Ships reached the scene within thirty minutes and rescued about 1,700 passengers when a sea disaster
occurred in 1909.
related sites:
http://www.alpcom.it/hamradio/marconi.html