energy
Tracing Power Lines with the Pylon Appreciation Society
Pylons
Not all the towers along a transmission line are identical. Look closely at a tower where the line makes a sharp turn and you will likely find it is wider and beefier than other towers along the route. The added strength and weight are needed to resist the unbalanced pull of the conductors, which might overturn an ordinary tower. These special towers are called deviation or angle towers.
The transmission-line tower everybody knows is an Erector Set latticework of steel girders and diagonal braces. The techniques for designing and building these towers are the same ones used in constructing steel bridge trusses or crane booms. The individual pieces can be made cheaply from rolled steel and then bolted together on the site. This last point is more important than it might seem: transporting a fully assembled tower 100 feet tall is an awkward and expensive business.
A haunting, syncopated music
"Rappers" on the roof of the electrostatic precipitator knock the accumulated dust free, letting it fall into the storage hopper. Each rapper is the size and shape of a baseball bat. Inside is an electromagnet that pulls a steel plunger upward, then allows it to fall again, producing a sharp knock. The rappers are energized at seemingly random intervals, producing a haunting, syncopated music. (The rhythm seemed more modern jazz than rap.)
Safety cut rope axe man
In the first nuclear reactor, constructed by Enrico Fermi in 1942 under the bleachers of the University of Chicago football stadium, the control rods were held up by a manila rope. A man with an axe was told to cut the rope if the reactor got out of hand. This "safety cut rope axe man" is supposedly the origin of the term SCRAM for an emergency shutdown procedure.
Color coding
Telephone wires erupt in a multicolor cascade in a ground-level, pedestal-type splice case on a city street.
Dividing the set of 10 colors into two contrasting groups of 5 allows for exactly 25 combinations with one color from each group; thus, each pair in a bundle can be uniquely colored. A similar color code is applied to the ribbons that bind together all the pairs in a bundle, and to those of the superbundles. The result is highly festive! A specific wire might be identified as the blue-red conductor within the orange-black bundle within the brown-yellow superbundle.
How Websites Die
I recently started compiling a list of defunct blogging platforms. It’s been interesting to see how websites die — from domain parking pages to timeouts to blank pages to outdated TLS cipher errors, there are a multitude of different ways.
It leaves no sign of its past self behind
When buildings are torn down and rebuilt, the ghost of the old building is often visible in the new one — strangely angled walls and rooms, which make sense only in the context of the space as a living organism. On the web, there are no such restrictions: when a website dies, it leaves no sign of its past self behind.
This obsession with permanence
I think a lot about the lifecycle of websites. I’m frustrated by so much of the short-term thinking I see in the world today, and the way we think about websites is a part of that: it’s “normal” for them to just go up in smoke as soon as their authors stop paying attention. People switch platforms and providers and break links without a second thought. It pains me to see people build websites with no feeling of obligation to them — when you put something out into the world, it is your responsibility to care for it.
At the same time, I wonder if this obsession with permanence is misplaced.