Sensors and Systems
-->
Breaking News
ISS National Lab Launches Orbital Edge Accelerator Program to Propel Startups Into the Growing Space Economy
Rating12345CIRI, E2MC, and Stellar Ventures will invest in six...
Maptitude Recognized as the Leading GIS Solution for Client Experience and Buyer Satisfaction
Rating12345NEWTON, MA (USA) – Caliper Corporation today announced that...
Teledyne CARIS to showcase innovative marine solutions at Ocean Business 2025
Rating12345Fredericton, New Brunswick, CANADA – April 3, 2025 –...

January 10th, 2011
The Difference Engine: Scrap the Copper

  • Rating12345

The telephone line connecting a residence to a local exchange (called “central office” in America) consists of a pair of plastic-coated copper wires that are twisted together along their length. The idea of the twisted-pair was invented by Alexander Graham Bell in 1881 to cancel out any electromagnetic interference and crosstalk between adjacent lines. Read More