2. How we communicated back in
the day
• Before electricity was practical for everyday
use (up until the 1860’s), mail by horse was
the most common way of sending messages
and parcels.Today, the USPS has the same
functionality, but time to ship is quicker due
to airplanes and motor vehicles.
3. Electricity Kicks in!
• In 1836, Samuel Morse develops a code for sending
messages over an electrical line using electrical
pulses.This code was known as morse code and is
still used in aviation radio towers today.
4. Now everyone can communicate
• In 1876,Alexander Graham Bell
invented the telephone, a device that
allowed people to communicate via
sound waves.This broadened the
range for the audience that could
communicate electronically.
