Skip to main content
   

Electromagnetic spectrum

When scientists first realised that electromagnetic waves could be transmitted through the air, they didn't understand the full extent or impact of what they'd discovered.

As our knowledge of the electromagnetic spectrum and the properties of electromagnetic waves has increased, we have learnt to manipulate and exploit them in different ways for many different uses, from early transatlantic phone calls to today's satellite and mobile communications.

The electromagnetic spectrum : from FM to infrared, AM to ultraviolet

The electromagnetic spectrum : from FM to infrared, AM to ultraviolet

How does the ionosphere bounce radio signals? : up and down

How does the ionosphere bounce radio signals? : up and down
fun and games

Can you beat our games? Explode equipment to see what's inside, hear the changing sounds of telecommunications, see how telecommunications designs have changed over time or send an e-postacard.

what's on

The UK's first permanent gallery dedicated to the history of information and communication technologies opens in the new Information Age gallery at London’s Science Museum.

audio history

Take a trip down memory lane with extracts of the interviews which have been recorded as part of the Connected Earth oral history programme.

featured story

100 years of automatic switching!
In 1912 the GPO installed Britain's first automatic telephone exchange in Epsom.

Discover the early days of the telephone...