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Josh Knox

Just Joshin' #106 (Engineering)

Published 15 days ago • 5 min read


1 Family Photo:
Railroad Museum

The other trip within our trip to Truckee was visiting the Nevada State Railroad Museum in Carson City, Nevada.

Longtime newsletter readers will note visiting train museums is sort of our thing—we've visited train museums in San Luis Obispo, Santa Maria, Virginia City, and Tiradentes to name a few. Our house (and everywhere we stay) becomes train museum, eventually.

Thanks to generous tips from newsletter readers, the Sacramento Railroad Museum and the Altoona Curve are on our shortlist of future train museums to visit.

I look forward to keeping you all updated.

--

The Nevada State Railroad Musuem is a big warehouse building full of restored steam engines and railcars. There's a shop in the back where volunteers rebuild and maintain old engines, and a private ralline circling the property where they run the steam trains on weekends in the summer.

There's a map of the transcontinental railroad painted along the floor of the museum. Every foot represents 10 miles. You can walk on top of it for half a football field from end to end, from San Francisco to Omaha. I've known about the transcontinental railroad since I was a little kid, but walking the map makes you marvel at its scale.

America's first railroads were built in the 1820s. Then someone dreamed up connecting the whole country with 2,000 miles of railroad track. Then others planned and designed the project. Then thousands painstakingly labored to bring it into existence.

The transcontinental railroad took six years to build (1863-1869) at a cost of $120,000,000 (2x the US Federal budget in 1863).

Not to mention how absurdly difficult it was to build train tunnels through granite in the Sierra Nevada mountains before the invention of dynamite (which we learned about at the Truckee Railroad Museum).

Once completed, the time it took to cross the United States was cut from months to less than a week. It was safer, and the cost was cut 10-fold.

Megaprojects like the transcontinental railroad, these feats of engineering, are inspiring. They're a reminder that hard things can be done. That hard things are worth doing. That we shouldn't be afraid of doing things just because they're hard.


1 Dad Joke:
Railroad Engineer

Why did the railroad engineer DJ the wedding?
Because he knew how to lay down some good tracks!

*image by
Dad[AI]Base


Highlights:
Engineering Feats

The Grid, Part IV: The Hard and Soft Paths of Energy Strategy by Brian Potter

Today, the electrical grid has over 500,000 miles of high-voltage transmission lines and more than 5 million miles of lower voltage distribution lines, which supply power from nearly 6,000 large power plants. Together, this system supplies more than 4 trillion kilowatt-hours of electricity to the US each year. The extent of it has led the US electrical grid to be called “the largest machine in the world.”
Building this machine took decades, millions of workers, and billions of dollars. Today investor-owned electric utilities collectively own nearly $1.6 trillion in assets, some of which have been in use for more than a century. The Whiting hydroelectric power plant was built in 1891 and still operates today, and the 2018 Camp Fire in California was caused by a PG&E transmission line built in 1921.

Modern civilization would be impossible to operate without cheap, widely available electric power. The grid makes modern society possible. But today, the grid faces several challenges that threaten its ability to distribute electric power...

The invisible seafaring industry that keeps the internet afloat by Josh Dzieza

In the family tree of professions, submarine cable work occupies a lonely branch somewhere between heavy construction and neurosurgery. It’s precision engineering on a shifting sea using heavy metal hooks and high-tension lines that, if they snap, can cut a person in half.

The world’s emails, TikToks, classified memos, bank transfers, satellite surveillance, and FaceTime calls travel on cables that are about as thin as a garden hose. There are about 800,000 miles of these skinny tubes crisscrossing the Earth’s oceans, representing nearly 600 different systems

If, hypothetically, all these cables were to simultaneously break, modern civilization would cease to function.

Fortunately, there is enough redundancy in the world’s cables to make it nearly impossible for a well-connected country to be cut off, but cable breaks do happen. On average, they happen every other day, about 200 times a year. The reason websites continue to load, bank transfers go through, and civilization persists is because of the thousand or so people living aboard 20-some ships stationed around the world, who race to fix each cable as soon as it breaks.

The sheer scale of the work can be thrilling, too. People will sometimes note that these are the largest construction projects humanity has ever built or sum up a decades-long resume by saying they’ve laid enough cable to circle the planet six times.

I Saw the Face of God in a Semiconductor Factory by Virginia Heffernan

TSMC makes a third of all the world’s silicon chips, notably the ones in iPhones and Macs. Every six months, just one of TSMC’s 13 foundries—the redoubtable Fab 18 in Tainan—carves and etches a quintillion transistors for Apple. In the form of these miniature masterpieces, which sit atop microchips, the semiconductor industry churns out more objects in a year than have ever been produced in all the other factories in all the other industries in the history of the world.

Like a dutiful valet who exists only to make his aristocrat look good, TSMC supplies the brains of various products but never claims credit. The fabs operate offstage and under an invisibility cloak, silently interceding between the flashy product designers and the even flashier makers and marketers. TSMC seems to relish the mystery, but anyone in the business understands that, were TSMC chips to vanish from this earth, every new iPad, iPhone, and Mac would be instantly bricked.

Several people at TSMC told me their work at arguably the most powerful company on the planet is “unsexy.” One told me that girls don’t fall for TSMC engineers, but their mothers do. Invisible as suitors. Indispensable as husbands.

How one stays interested, curious, consumed with an unrelaxed and breathless craving to know: This emerges as one of the central mysteries of the nano-engineering mind. Weaker minds shatter at the first touch of boredom. Distraction. Some in Taiwan call these American minds.

Mechanical Watch by Bartosz Ciechanowski

I’ll explain the workings of the mechanism seen in the demonstration below. You can drag the device around to change your viewing angle, and you can use the slider to peek at what’s going on inside:

The Art of Doing Science and Engineering by Richard W. Hamming

I need to discuss science vs. engineering. Put glibly:
In science, if you know what you are doing, you should not be doing it.
In engineering, if you do not know what you are doing, you should not be doing it.

Want to Talk?

Grab some time on my calendar to share a funny story from this week:

Let's Chat!

Book some time even if you don't know what you want to talk about:
https://calendly.com/iamjoshknox

Until next week,
iamJoshKnox​


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Josh Knox

Hi! I am Josh Knox. Read more of me here: 👇

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