God damn that'd be painful.

>>17449139
You're a big guy

>>17449131
Wow, so you're telling me the grain eaters had rotting teeth and were forced to install metal bracing to keep their mouths from falling apart before they died of a tooth abscess at age 30 that was so bad it literally blew a hole in their jaws?
Amazing.

An extraordinary work with glass made by the Romans in the fifth century AD demonstrates one of the greatest examples of nanotechnology in the ancient world. The Lycurgus cup, which is part of the collection of the British Museum, shows King Lycurgus being dragged to the underworld by Ambrosia. This cup looks green in reflected light, but appears red when light is shone through it. This effect is due to the colloidal dispersion of gold and silver nanoparticles, about 70 nm in diameter, in the glass which scatter the light.

>>17449177
That's pretty cool

In Mesoamerica they did that with paint sometimes, where mica or metallic flakes were mixed into paint at Copan and Teotihuacan to give buildings a sort of pearlescent finish

Sadly I don't think there are any photos which show the effect off: The Rosalila temple at Copan this was documented at has been reburied for decades to keep it preserved and basically all the photos online show a 1:1 scale replica which doesn't have the same paint finish, and I'm not sure which compounds at Teotihuacan it was done at beyond knowing it happened there too

The obvious example of color changing structural coloration stuff from Mesoamerica though we do have photos of are feather mosaics: tens of thousands of feathers were arranged on the surface of tapestries, clothing, warsuits and armor, shields, helmets, and 3 dimensional arrays/models (like of animals) and banners to form a color shifting iridescent finish, where the arrangement of feathers of different colors formed images and patterns (EX: Jaguar warsuits had different feather colors for the spots, they weren't actually made from Jaguar pelt, usually)

Very few prehispanic examples survive, just 4 shields and one chalice cover (plus a breechcloth which was lost in WW2), but there's a few hundred pieces from the colonial period made by Mesoamerican artists (typically Aztec or Purepecha) for the Spanish with catholic imagery, see pic

>>17449131

This isn't technically technology, but a caveman drew this picture of a bear in Chauvet France during 30,000 BC and I think it's pretty good.

Really confident linework, perfectly captured the silhouette/shape of the bear, great shading on the muzzle, and I'm really impressed with how the ear 'nub' makes the picture look less flat and adds a little dimension.
It's difficult to see in this pic, but I'm especially impressed that they drew the legs correctly. People struggle with quadrupedal legs even today, but that caveman nailed where the shoulder and elbow were and how they bent perfectly.

Raymond Chandler blew apart slop serial sci-fi that crony capitalists worship despite being from the 1800s:

>Did you ever read what they call Science Fiction? It's a scream. It is written like this: "I checked out with K19 on Adabaran III, and stepped out through the crummaliote hatch on my 22 Model Sirus Hardtop. I cocked the timejector in secondary and waded through the bright blue manda grass. My breath froze into pink pretzels. I flicked on the heat bars and the Bryllis ran swiftly on five legs using their other two to send out crylon vibrations. The pressure was almost unbearable, but I caught the range on my wrist computer through the transparent cysicites. I pressed the trigger. The thin violet glow was ice-cold against the rust-colored mountains. The Bryllis shrank to half an inch long and I worked fast stepping on them with the poltex. But it wasn't enough. The sudden brightness swung me around and the Fourth Moon had already risen. I had exactly four seconds to hot up the disintegrator and Google had told me it wasn't enough. He was right."

>>17449140
for you

>>17449204
Mesoamericans were ANE, and therefore white

>>17449305
Joseph Smith I implore thee to exit this vessel and return to whence thee cameth.

>>17449237
got to remember the lighting in these caves would have been terrible. arguable better use of shading and perspective than lots of darkage artwork

>>17449204
these are super cool and fresh.

anyway. here is a german man found with a knive arm prosthetic from 6th-8th c AD.

>>17449140
for you

A toilet(?) at Teotihuacan

I have a (?) there because I'm not sure if the specific function of this has been confirmed, and according to researchers I or people I know have asked about toilets at Teotihuacan, the ones that have been investigated (which may or may not include this one) don't seem to have any sort of discovered connection to other waterworks, which seems strange considering you can clearly see some sort of channel or drain in the photo

Other structures at Teotihuacan have various waterworks in them: Various residences have reservoirs, as well as drainage systems to avoid flooding, and I believe though don't recall for sure some residences would have had running water. There were also rivers converted into canals or channels recoursed through the city's grid layout (there is some speculation but I don't know if any actual evidence for drains from homes and such going into the rivers), and the Ciudadela complex's plaza/courtyard was able to be flooded into a big basin or pool for rituals

See also >>>/v/700622432 , >>>/v/700623076 and https://www.youtube.com/watch?v=aV6ZZZsCjK8 for more info on Teotihuacan

>>17449177
Just how close were those mfs to figuring out the steam engine?