This animation demonstrates the mechanism and operation of record players.
The device that transmits human voice as electrical signals was invented by Bell in 1876.
This animation demonstrates how radios work.
Inventions in the 18th century resulted in huge advances in the development of the textile industry.
The American inventor presented his invention revolutionising telecommunication at New York University in 1837.
The trumpet is a musical instrument with the highest register in the brass family.
Television, invented in the early 20th century, became one of the basic forms of entertainment.
Cinemas were built in large numbers in big cities of the US in the 1910s.