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Posted on 9/14/24 at 12:32 pm to Joshjrn
quote:
Also, that’s actually the type of thing that generally gets lost to history, because books were incredibly fricking expensive back then, so no one wrote down rudimentary shite everyone already knew, like the recipe for concrete.
I mean, Romans were uniquely good at creating concrete, so I actually think someone would have written that down. Rome didn’t really control Egypt until Caesar, so it would make sense for someone visiting Rome from Egypt to write that down and bring it back to Alexandria.
Posted on 9/14/24 at 12:45 pm to OMLandshark
quote:
Rome could make better concrete than we currently can, and we have no idea how they did it. It’s why Roman roads and structures have particularly lasted so long.
They've actually done studies recently with modern equipment.
We've known alll along that the volcanic ash they used called Pozzolan (hence the name of an entire class of cementicious materials) prevented attack by seawater, and years ago found out it was due to an alkali-silica reaction (which is why a certain type of flyash - another "pozzolan" - is often added in great amounts to marine concrete).
What we didn't know until recently is that the lumps of lime that they fired into cement often didn't get cooked all the way, so every time a crack in the concrete grew into a lump, the uncured lime leached out and mortared the crack closed, helping to prevent further water intrusion.
Posted on 9/14/24 at 12:46 pm to Tiger1242
Little known fact:
It was located in the middle of the 167 turn circle.
It was located in the middle of the 167 turn circle.
Posted on 9/14/24 at 12:47 pm to OMLandshark
quote:
Rome could make better concrete than we currently can, and we have no idea how they did it. It’s why Roman roads and structures have particularly lasted so long.
This is false. We know exactly how they made it
LINK
Posted on 9/14/24 at 12:54 pm to Tiger1242
This post is why I love the OT. Up vote for humor and provoking thought.
Posted on 9/14/24 at 12:56 pm to Tiger1242
quote:
This is false. We know exactly how they made it
We do now, but we didn't for many centuries.
Posted on 9/14/24 at 12:57 pm to Tiger1242
Well not the first time I’ve been wrong and won’t be the last either.
Posted on 9/14/24 at 1:05 pm to BurningHeart
quote:
Nah it's still there
Been there , nothing fancy.
Posted on 9/14/24 at 1:06 pm to Tiger1242
JDHD
This post was edited on 10/2/24 at 7:38 am
Posted on 9/14/24 at 1:09 pm to Woolfpack
quote:
was a two hours drive
Took us 4. Drivers needed to “pray” at the make shift shopping center about half way. i.e. smoke and drink tea…
Posted on 9/14/24 at 1:37 pm to soccerfüt
quote:
It was located in the middle of the 167 turn circle
Probably explains why no one can find it.
Posted on 9/14/24 at 1:41 pm to athenslife101
Surely it was all backed up to the cloud, right?
Morons, all of them.
Morons, all of them.
Posted on 9/14/24 at 1:50 pm to supadave3
I mean, they’re finding stuff all the time.
I haven’t been able to find the source again of this fact. I heard this fact on Ancient Warfare podcast. But a quarter of all writing we have from antiquity is from Galen. Think about that.
I haven’t been able to find the source again of this fact. I heard this fact on Ancient Warfare podcast. But a quarter of all writing we have from antiquity is from Galen. Think about that.
Posted on 9/14/24 at 2:01 pm to BurningHeart
Been to the Ellick Library.
Prefer the Martin Branch Library in Pineville.
Prefer the Martin Branch Library in Pineville.
Posted on 9/14/24 at 2:31 pm to OMLandshark
quote:
I mean, Romans were uniquely good at creating concrete, so I actually think someone would have written that down. Rome didn’t really control Egypt until Caesar, so it would make sense for someone visiting Rome from Egypt to write that down and bring it back to Alexandria.
Sure, maybe some traveling scholar might have put it down on a sleeve of note paper. We’re talking books in a library. At a time when the people making the concrete almost certainly can’t read. It’s an extremely recent phenomenon for instructions for trades to be put into books. Hell, we have nearly nothing in the way of written texts when it comes to metallurgy and armor crafting from the Middle Ages. That type of thing just wasn’t written down in books, as a historic rule.
Posted on 9/14/24 at 3:00 pm to OMLandshark
quote:
Let’s say we lost all knowledge from the internet and didn’t get the internet back for 1300 years. That’s roughly what happened there.
Maybe the Egyptian hieroglyphs were really just the cat memes back then.
Posted on 9/14/24 at 3:33 pm to Joshjrn
We probably lost a lot of records about the history of certain civilizations. I’m sure some scientific knowledge was lost, but probably not enough to set us back centuries.
There are things like Heron’s steam engine which was preserved in writing, but the engine itself was said to be lost in the library. Things like that might have inspired someone who saw it, but didn’t have access to a book in Constantinople.
There are things like Heron’s steam engine which was preserved in writing, but the engine itself was said to be lost in the library. Things like that might have inspired someone who saw it, but didn’t have access to a book in Constantinople.
Posted on 9/14/24 at 3:35 pm to Tiger1242
The Pantheon in Rome was built 2000 years ago. It has a domed roof. In the 1500s a big church was built in Florence but the domed roof was not finished for over 100 years because nobody knew how to do that any more.
Posted on 9/14/24 at 3:42 pm to OMLandshark
quote:
Rome could make better concrete than we currently can, and we have no idea how they did it.
Lol. No they didn't. What an ignorant comment. Like people who claim the original Damascus steel is better than what we have today. Dumb.
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