The entire internet weighs about as much as a single grain of sand
In short: We treat the internet as a vast, ethereal cloud, but it is actually a physical infrastructure of cables and servers. Yet, despite its massive reach, the digital information itself is nearly weightless. Here is how a global network of bits manages to carry the world's data.
The internet was born from a military necessity for resilience. Created in 1969 by the United States Defense department's DARPA, it was designed as a decentralized network. The goal was to ensure that if one part of the system were destroyed during a war, other arms could remain functional, allowing communication to persist. This architecture remains its core principle: the internet is not located in one spot, but is a massive network of servers tied together by a backbone of fiber optic cables and city exchange points.
Technically, the internet functions on a client-server model using the TCP/IP protocol suite. When you request a website, your device (the client) sends a request that a server processes and sends back. TCP breaks this data into manageable packets, while IP handles the routing and addressing. To make this usable for humans, the Domain Name System (DNS) acts as a directory, translating easy-to-remember names like Amazon.com into unique numerical IP addresses that computers use to find each other.
While the physical hardware—estimated to be around 75 million servers as of 2018—occupies real estate in data centers, the data itself is composed of digital bits of electrical on-off pulses. According to Google estimates, the internet has a memory capacity of about 5 million Terabytes. If you were to weigh the trillions of bits and the electrons carrying them, the total weight would be approximately 0.2 millionths of an ounce—roughly the weight of a single grain of sand.
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Sources
- Summary by Intellect · source: How does the Internet work? Where is the internet?
- Also: How Does The Internet Work? | Internet Protocol Suite, Client-Server Architecture, & DNS | Britannica
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