the things we cherish are small indeed

Shockingly, however, spending most of your time in close proximity to 500 pounds of liquid mercury is Not Great For One’s Health and tons of lighthouse keepers started to go crazy from the whole. Mercury poisoning thing. Hence why there are a lot of “haunted” lighthouses or wickies that lose it and maybe do a bit of manslaughter.

In a letter written on April 19, 1825, Augustin Fresnel proposed the use of mercury to reduce the friction in revolving lenses. His statement follows: “I propose to float our rotating devices, of the first order, in a bath of mercury, instead of placing them on rollers. This project won't present many difficulties; nevertheless, as I have not put it into execution, I won't require you to adopt it for your first lighthouse.”

Fresnel’s plan for mercury flotation was not put into practice until 1890 when Monsieur Leon Bourdelles, Chief Engineer of the French Lighthouse Service, designed and built a workable mercury flotation system. The mercury bath allowed the lens to operate in an almost frictionless environment and, additionally, allowed the speed of rotation to be dramatically increased.

It mattered for optics reasons.

Under less-than-ideal conditions, you can only see the beam when it’s pointed more or less directly at you. In-between beams you would not be able to see anything. One solution to this was to create multiple beams, and the lenses Mr Fresnel designed usually created 8 beams. But, even still, duration between flashes could be as long as one minute in the old mechanical roller systems.

The nearly frictionless operation of the Mercury suspension system allowed the lenses (large pieces of precisely ground glass weighing several hundred pounds in some cases) to rotate fast enough that they could be redesigned to create fewer (usually 3) beams. Fewer beams from a similar light source will be proportionally brighter, and the gains in speed were sufficient that duration between flashes could still be reduced to as little as 10 seconds.

This was a big upgrade. It didn’t just make the lighthouse signal faster, it allowed them to completely overhaul the lens and derive more visibility from a light source.

What’s a little Madness, in the face of Progress?"

Also lighthouses are just fucking cool. You can see where they get all their gothic, haunted imagery. Isolation, madness, light, ocean, the burden of duty ...

Closest match: fucking badass werewolf Common name: hell yeahhhh

Round Three, Bracket 4

Propaganda below the cut:

Yeah, yeah. It's bad. We get it. Kinda hard to miss right now. You know what? So is everywhere else. You are not going to find a single government, a single nation, anywhere on earth that is perfect and unproblematic.

We need to acknowledge this. Nowhere is perfect. Everywhere has corrupt people who actively seek positions they can use to exploit power and enrich themselves at the expense of others. The vast majority of countries in the world have a lot of blood on their hands and were founded in war; loads of countries have a history of colonization and exploitation of other countries, and a lot of that is continuing to this day.

Now raise your hand: who here was taught as a child to believe in the good your nation can do for its people and the world? Who here was raised with the idea that your country had an awful past but has learned better and is trying to move forward to do better and be better in the future?

Short of buying a boat and hiding away at sea, you are never, ever going to be free of nationality. Not even if you burn it all down; something new will just arise in its place. This is the world we have; this is the society we have to live in. Do you not wish it was better? Do you not wish that is did reflect that optimism you were raised with?

The reason children around the world are taught to believe in the good side of their nation is NOT because the people teaching us want to indoctrinate us into the cult of nationalism (okay yeah, some do do that on purpose, and sometimes that's just the result despite teachers' best efforts), but because they want us to see that good side, see what things are like now, and get angry and disappointed and energized enough to fight to make it reality. To actually do better and become a better world for everyone.

well now i just havee to draw more rocky in my style

they get around to talking about WHY humans age and die so soon, and the Eridians are like, oh it's your genetic coding getting gradually mangled? it's your telomeres? fucking telomeres? (also your horrifying atmosphere slowly burning you alive but one problem at a time here)