Undersea Internet Cables
discrete
The 700,000 miles of cables connecting the world's internet
Introduction
Virtually all international internet traffic travels through over 700,000 nautical miles of undersea fiber-optic cables lying on the ocean floor. These cables connect continents, carrying emails, video calls, web pages, and streaming content. Companies like Arelion operate networks spanning 77,000 km connecting Europe, North America, and Asia. The design and routing of this infrastructure involves fascinating mathematical problems: finding shortest paths between landing points, ensuring network redundancy so a single cable cut doesn't disconnect regions, and optimizing data routing across the network. This is graph theory in action on a global scale.
Guiding Questions
- How can the global cable network be represented as a graph?
- What's the shortest cable route between New York and Tokyo?
- How many cable cuts would disconnect a major region?
- How is data routed between continents to minimize delay?
- What makes a cable network resilient to failures or attacks?
Key Mathematical Concepts
Optimization
Graph Theory
Networks
Global Infrastructure
Shortest Path