signals in photos
RSS signals in photos
Photos: The Colossus WWII codebreaking machine
Photo This is the radio receiver that was used to capture radio signals transmitting enciphered Lorenz messages. The enciphered messages from the radio signals were then punched onto paper tape using this... [18 Mar 2008]
Photos: Modern computing balancing on the head of a pin?
Photo It soon proved its worth with its ability to amplify electrical signals and to switch them on and off. They don't make them like this anymore - silicon.com casts an eye back over the ever-shrinking transistor, the... [29 Jan 2008]
Photos: 'Top Gun course' for submarine hunters
Photo The sonar operators rely on visual and audio signals to work out where submarines may be lurking, by using a series of sonar signal displays and their ears. A sonar operator's shift can last up to eight hours, with... [22 Aug 2007]
Photos: Cambridge boffins showcase tech of tomorrow
Photo But Dominic Mikulin, CEO of OptiSynx, the company behind the clock, said GPS signals can be disrupted by weather, environmental conditions or warped using basic equipment, leaving the system open to tampering. [13 Nov 2006]
Photos: The top 10 gadgets for business travellers
Photo Instead of having to open and shut your laptop to find out if there's a hotspot around, you can simply switch on your wi-fi finder, which will tell you how many access points are nearby and how strong the signals are. [26 May 2006]
Photos: BT Tower at 40
Photo The tower was designed to meet the increased demands of broadcasting by allowing the use of microwaves instead of landlines for transmitting television signals. The BT Tower, one of London's most famous landmarks, was... [10 Oct 2005]
