Dead Internet Almanac

In 1973, a twenty-six-year-old engineer named Robert Metcalfe sat at a typewriter inside Xerox PARC—arguably the most productive research lab in computing history—and tapped out a memo that would forever change how machines communicate. Tasked with finding a way for PARC’s revolutionary graphical workstations to share a single, expensive laser printer, Metcalfe proposed a resilient data broadcast system running over thick coaxial cables snaking through the ceiling. He named his invention Ethernet, a poetic nod to a debunked nineteenth-century physics theory about an invisible medium carrying light through empty space.

While Xerox executives struggled to commercialize the miracles emerging from their California lab, Metcalfe eventually left to found 3Com, bringing his networking standard to the rest of the world. Over the next fifty years, Ethernet rapidly evolved from bulky metal transceivers clamped onto thick yellow cables into the gigabit and terabit bedrock of the global internet. Today, even as we perceive our digital lives as entirely wireless, every Wi-Fi router eventually connects back to a physical wire that still quietly routes packets using the exact same language Metcalfe sketched out half a century ago.

Read the original article: https://medium.com/@dia_91230/2-94-megabits-per-second-the-1973-memo-that-wired-the-world-62435f142eef

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Show Notes

In 1973, a twenty-six-year-old engineer named Robert Metcalfe sat at a typewriter inside Xerox PARC—arguably the most productive research lab in computing history—and tapped out a memo that would forever change how machines communicate. Tasked with finding a way for PARC’s revolutionary graphical workstations to share a single, expensive laser printer, Metcalfe proposed a resilient data broadcast system running over thick coaxial cables snaking through the ceiling. He named his invention Ethernet, a poetic nod to a debunked nineteenth-century physics theory about an invisible medium carrying light through empty space. While Xerox executives struggled to commercialize the miracles emerging from their California lab, Metcalfe eventually left to found 3Com, bringing his networking standard to the rest of the world. Over the next fifty years, Ethernet rapidly evolved from bulky metal transceivers clamped onto thick yellow cables into the gigabit and terabit bedrock of the global internet. Today, even as we perceive our digital lives as entirely wireless, every Wi-Fi router eventually connects back to a physical wire that still quietly routes packets using the exact same language Metcalfe sketched out half a century ago. Read the original article: https://medium.com/@dia_91230/2-94-megabits-per-second-the-1973-memo-that-wired-the-world-62435f142eef Subscribe to The Dead Internet Almanac: https://buttondown.com/dead-internet-almanac

What is Dead Internet Almanac?

Old games, dead platforms, forgotten memes, vanished websites, and the strange little artifacts that somehow survived.

On May twenty-second, nineteen seventy-three, a twenty-six-year-old engineer named Robert Metcalfe sat down at an IBM Selectric typewriter at Xerox PARC. He tapped out a memo describing a way to connect the lab's computers together using coaxial cable.

He called his invention Ethernet, naming it after the luminiferous aether, the invisible medium that nineteenth-century physicists mistakenly believed carried light through empty space. The physicists were wrong about the aether, but Metcalfe was right about the network.

Half a century later, while wireless connections dominate consumer life, Metcalfe's invention remains the physical bedrock of the internet.

Xerox PARC in the early nineteen seventies was arguably the most productive research lab in computing history. In a span of just a few years, a small team there invented the graphical user interface, the computer mouse, the laser printer, and what you see is what you get text editing. But all those powerful workstations needed a way to talk to each other and share the expensive new laser printer.

Metcalfe's memo proposed a broadcast system running over a thick coaxial cable snaking through the building's ceiling. Any computer on the network could send a packet of data, and if two packets collided, the machines would wait a random fraction of a second before trying again. It was simple, resilient, and ran at an astonishing two point nine four megabits per second, fast enough to feel instantaneous.

While the memo was the spark, the implementation took physical form. Early transceivers were bulky metal boxes clamped directly onto the thick yellow cable, puncturing the shielding to make contact with the copper core.

Xerox struggled to turn PARC's miracles into commercial products. The company was fundamentally a copier business, and the executives in New York rarely understood what the researchers in California were building. So Metcalfe eventually left, founding Three Com to sell Ethernet cards to the rest of the world.

Over the decades, the technology evolved from thick yellow coax to twisted-pair cables with R J forty-five connectors, scaling from two point nine four megabits per second to gigabit and eventually terabit speeds.

Today, we think of ourselves as living in a wireless world. But every Wi-Fi router eventually plugs into a wire, and that wire still speaks the language of Ethernet. The name itself is a beautiful artifact, a permanent monument to a debunked theory of physics, quietly routing packets in every data center on Earth.