Page 15 - HP3A 008 The St. Louis World's Fair

messages were transmitted. Outside,

there was a receiver which a visitor

could pick up and hold to their ear.

The receiver, though not connected

to anything, allowed the visitor to

hear whatever messages were being

transmitted from inside, making

that exhibit the first wireless

communications device. Its same

technology was used in creating the

One example of a communications radio and eventually mobile phones

device was the radiophone. Inside which we use today. Among the

the Palace of Electricity, there was other practical inventions was the

an apparatus from which sound Finsen Light and X-ray Machine.