For what are the key and receiver used?
The key is used for sending messages, and the receiver for receiving them.
What must each station have?
Each station must have both a key and a receiver, so as to send as well as receive messages.
What is the Atlantic cable?
The Atlantic cable is a telegraphic wire reaching across the Atlantic Ocean, from America to Europe.
When was the first Atlantic cable laid?
The first Atlantic cable was successfully laid in 1866, between Newfoundland and Ireland. It is eighteen hundred and sixty-four miles long, and its success is chiefly due to Cyrus W. Field.
Of what use is the Atlantic cable?
The Atlantic cable forms a telegraphic connection between Europe and America, so that news may be sent from one country to the other in a few moments of time; thus the people of the two continents, although so far apart, can communicate with each other many times in a single day.