Internet

Undersea cables are the unseen backbone of the global internet

Have you ever wondered how an email sent from New York arrives in Sydney in mere seconds, or how you can video chat with someone on the other side of the globe with barely a hint of delay? Behind these everyday miracles lies ...

Telecom

ESA shipping container's laser link to space

ESA's very latest laboratory extension is portable in nature: Hosted within a standard shipping container, this ESA Transportable Optical Ground Station, ETOGS, can be transported all across Europe as needed, to perform laser-based ...

Business

Taiwan prepares for cyber D-Day in China invasion scenarios

Millions of people offline, banks knocked out and the world's most advanced semiconductor industry paralyzed—Taiwan's doomsday scenario includes not just invading Chinese troops but also a wave of attacks against its cyber ...

Consumer & Gadgets

Can you charge an old phone with a new charger?

"Do older Apple devices have the software that allows them to regulate the amount of power provided by today's more powerful chargers? Can those higher-powered chargers harm older devices?"

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Cable

A cable is two or more wires running side by side and bonded, twisted or braided together to form a single assembly. In mechanics cables, otherwise known as wire ropes, are used for lifting, hauling and towing or conveying force through tension. In electrical engineering cables are used to carry electric currents. An optical cable contains one or more optical fibers in a protective jacket that supports the fibers.

Electric cables discussed here are mainly meant for installation in buildings and industrial sites. For power transmission at distances greater than a few kilometres see high voltage cable, power cables and HVDC.

This text uses material from Wikipedia, licensed under CC BY-SA