Ancient precision
 

Evidence of ancient high precision
Get interesting at 23 minutes in.
No one seems to be able to demonstrate how one can make a corundum vase to high precision and drill handle holes through it or make a dish out of granite so thin it's kind of transparent with copper chisels, wooden hammers and stone pounding blocks.

As soon as I saw the thread title I thought Seraphium and the Schist disk.

I'm only 38 minutes in but I am being driven from the house by the need for groceries. My theory for the control they had over surfaces is Electrical Discharge Machining.

edit:
The Unusual Earth Orbit Circling Above Our Ancient Past
Precise orbit from antiquity? At 13:30 he mentions the precision machining.

How to rebuild society after the solar micro nova?

www.youtube.com/watch?v=SOw9WqMOHjA"]https://www.youtube.com/watch?v=SOw9WqMOHjA[/URL]

Back in the old days any blacksmith could make a sword or armor, the bad ass blacksmiths made the files.

Clickspring is awesome. It makes you appreciate being able to pick up inexpensive tools at Harbor Freight.

His pneumatic fire starter is interesting.

40,000 to maybe possibly as old as 70,000 year old drill and stone work. The hole was drilled rapidly with little to no bit deflection, almost as if they used some sort of drilling machine.
https://youtu.be/kKEGouqTQ5Y
https://m.youtube.com/watch?v=kKEGou...ature=youtu.be

You can drill precision holes with abrasives or technically just water or even air. Grind and polish too, no hammered chisels necessary

No one expected ancient people like that to be this capable.

precision
 

The Metropolitan Museum says the Egyptians had saws and coring drills of bonded particulate abrasives, and performed finishing operations with rubbing stones and abrasive slurries.
A neighbor is an Austin limestone sculptor and uses all these techniques on the softer stone as well.

This is so much more interesting than 'discussing' climate change.

I'd like to do the props and sets for a post-apocalyptic story. The hook would be that life is better after the Apocalypse. A medieval-level technology with high tech masquerading as 'majic'.

The 3D house printer would consist in a mast with three yardarms creating a[n irregular] hexagon 40 ft in the air. It would suspend three cable inverted tripods Each cable would be pulleyed and controlled from the ground by crews coordinating their movements with sea shanties.

A wind-powered Olds elevator would lift cob to the top where it would be fed to one, or up to three, extruder[s]. Each could be replaced by a pick'n'place gripper to lay stone [else hemp Lego block] walls, or a pile driver/tamper for rammed earth floors.

The hard part would be getting the mast out of the finished structure so I propose stacked short sections of log caged by a tensegrity mast to stiffen it.

Up on the hill would be a wizard's tower with a tall lightning rod to run the antiquitech lighting, but it would have a glass cartridge vial as a fuse filled with newt's eylids and other orgainc refuse. Occasionally a lightning strike would reduce the fuse material to flash graphene. Which he would collect and distribute to the townspeople as an amendment to their adobe and cob.

It would be far enough North that sailing ships could reach ice floes, where they carve out needle shapes, capture them between two ship and spin them to carve a hydrodynamic profile and wrap it with wool tarps, to tow home and into a drydock where it supplies fresh water to the community.

For the ships I'm all over the place. Maybe like the low-poly wooden brigatines Cortez constructed for the siege of Tenochtitlán in 1521. The homes and shopping malls would be geodesic domes with Tartarian detailing.

https://external-content.duckduckgo....6pid%3DApi&f=1
https://external-content.duckduckgo....6pid%3DApi&f=1

The Golden Age as predicted by Scott Adams. It's pretty much high tech at both ends with low tech in the middle [ages].

Solar micro nova
 

I don't think there's such a thing.
1) the Sun is a main sequence star
2) it's 4.6-billion years old
3) it's lifespan is 10-billion years
4) 3.5-billion years ago, Earth was in the middle of the Goldilocks zone
5) Solar luminosity will increase 10% per billion years
6) By 500,002,015 all multicellular life will be threatened
7) By 1.75-billion years from now, the oceans will have evaporated away
8) as hydrogen fuel is spent and helium is burned, the Sun's interior pressure will overcome gravitational forces, and expand into a Red Dwarf incinerating the solar system

Nothing in your list precludes the phenomenom. 1) defines it away.

The classic scenario of feeding off a binary star companion is being extended to dust swept up from the interstellar medium.

Red dwarf or red giant?

en.wikipedia.org/wiki/Nova#Occurrence_rate_and_astrophysical_significanc e

There are world's of opportunity for events between a Coronal Mass Ejection and a Nova. And at least two probable causes.

"Necessity is a Mother"* Frank Zappa

phenomenon
 

1) my source is Howard E. Bond, Space Telescope Science Institute, Baltimore, MD, and Proceedings of the Frascati Workshop, Vulcan Island, Astrophysics and Space Science Library, aimed at a specialist audience.
2) the Sun is a main sequence star, not a binary, not a supermassive.
3) the Sun is held together by hydrostatic equilibrium.
4) nearing the end of its life, the Sun will experience expansion into a distended asymtotic-giant branch ( AGB ) star, in about 5-billion years.
5) the Sun will suddenly eject its outer layers, evolving into a proto-planetary-nebula phase.
6) the Sun's remnant core will rapidly evolve to very high surface temperature, emitting such intense UV radiation that the ejected envelope will heat to flourescence, producing a planetary nebula ( PN ).
7) as of 1989, there were 1250 known PN in the Milky Way.
8) a main sequence star remnant core is of such insufficient mass that it cannot become a neutron star or a black hole.
9) Perhaps S-O has mentioned the Russell-Vogt Theorem of mass-equilibrium limit.

?
 

Technically, is will be a planetary nebula.

necessity
 

And the necessity of invention is a mutha-

Nova
 

I'm not seeing anything in the solar physics literature which implies that we could expect any remarkable activity of of our Sun in the next 5-billion years.

As a sanity check, does your 'the solar physics literature' comment on the Charlemagne Event?

phys.org: Researcher points to Sun as likely source of eighth-century 'Charlemagne event'

event
 

* Sounds like it wasn't much of an event.
* Your friends at University of Illinois, Champagne-Urbana told us that for a supernova to hurt us, it would have to be within 25 light years, unless jets were perfectly aligned. If so, we'd be looking for either a neutron star or black hole remnant within 25 light years.
* University of Kansas has mentioned solar storms of 1928, 1946, and 1972.
*At home I've got some stuff on high-latitude events in Canada, where 6-million lost power, transformers exploded, satellites experienced space drag which degraded their orbits, ect..
* Also, NASA monitors solar flares for gamma-rays, so its looks like that can be a 'thing.'
* NASA also says that solar flares can not automatically be associated with solar storms, as it all has to do with alignments and intersects, neither of which can be predicted.

Carrington wasn't either, excepting the telegraphs. :eek:

Unfortunately advancement in this field is only occurring at the pace of funerals as the gatekeepers of the status quo die off.
https://youtu.be/-WhOSRbOLo0
https://m.youtube.com/watch?v=-WhOSR...ature=youtu.be

Interesting find from 31 May 2018. If the Muon-oscopy of SP-BV wasn't stopped, the shape of the volume should refine over time.

These are known unknowns. Makes me wonder about the Mud Flood and Tartarian antiquitech.

even of you don't like it.

The low key solution to surviving the apocalypse is the underground cheese cavern stockpiles. There are a billion pounds of cheese stored in apocalypse safe caverns underground. Why scavenge for food in abandoned stores full of zombies when generations of your future progeny could survive off cheese alone.

https://www.youtube.com/watch?v=VRCNpcmxi6Q

That's a lot of grilled cheese sandwiches.

edit: I got to t=250 and the memories came rushing back.

A bit odd.
https://youtu.be/cIZ7625Ts6A
https://m.youtube.com/watch?v=cIZ762...ature=youtu.be

All I need to form an opinion would be the orientation relative to the Solstices. It must be pretty wild that close to the pole.

How would you even deal with all the wobbles and permutations? Like perhaps, highest point above that knotch between those two pillars? That and lack of long term building materials....don't see a lot of ancient stone buildings above the artic circle

A little more modern.
https://youtu.be/TdoaHK5TRh8
https://m.youtube.com/watch?v=TdoaHK...ature=youtu.be
I didn't know cnc dated to 1958.

I was wondering where I'd find a thread where this would fit. Thanks for going modern.
Hot Tesla DOJO Update !
Note especially ?t=261 where it shows the traditional architecture of chip/package/board/box/rack/data center is superceded by chip/tile/exapod-->data center. Each tile is a sandwich of layers, one with 25 chips, that draws 15kW in at the bottom and rejects heat off the top.

The whole thing eats megawatts of power.

Anastasii has a mezmerizing accent.

Metrologists examine a pre-dynastic stone vase and the results are astonishing. None of this was supposed to be possible until at least 1700s.
https://youtu.be/PrhFnai2TGs
https://m.youtube.com/watch?v=PrhFna...ature=youtu.be
Archeologists: "just another totally lame, unimportant, pre-dynastic stone vase".
Machinist and stone mason's "we don't know how this was made and we can't reproduce it".
Archeologists: "but they hasn't even invented the wheel yet".

I think we have clear evidence that pre-dynastic civilization has been comically under estimated.

Reminds me of what I noticed in the previous video -- one thousandth of an inch? Why not 1/10,000ths [aerospace levels]? Disclaimer: I've never worked to more [less?] that 1/100ths myself.

Had to pause at 11:38. I see they will get to the Serapeum. I saw a primer on the nomenclature they use in their call-outs, an example at 7:11 as Controls. But I went back though my history and couldn't find it. Maybe later.

In case I don't get back to it, here's a PDF: brlcad.org/design/drafting/Drafting_Manual_DimensioningAndTolerancingSymbols_ 6-1.pdf

Yes theres one where they examine the serapeum.

At 51;17 they state the need to go to 10/1000ths.

Ya 1 thousands or 10,000s makes me think they used a surface grinder, not a cutter.
Seems kind of odd they didn't have the wheel, but appear to have a lathe with surface grinder setup.

Making something like this that's accurate to .001 isn't hard, you just need a solid tool holder and some really light feed pressure and oddly: climate control or a way to keep the part uniformly cool or warm. Rinse repeat. Making a part repeatable to .001 or making it that accurate to start with: THAT'S difficult because you need to also build a system that measures more accurately than you can cut. Light powered optical measurements are good to .0001 or 1 ten thousanths but it's only accurate to how accurate the profile is. If they found a couple of these that are that accurate, now I'm impressed, but a one off cherry picked for youtoob..... not so much.

I am also contemplating the visuals this guy is pushing with his measurement equipment, like how come the dial indicator foot isn't on the visible side where you can see it touch? I am also suspicious of his position locator arm sitting in a room temprature not clean room.

We don't know if they were made with a few thousands of an inch of each other as only one of these stone vases have been examined by metrologists. It seems museum curators who control vase sets that appear to be identical are not eager to have these vases examined by metrologists.
The idea that we are supposed to believe that these stone vases some with hardness from about 7 up to 9.25 on the mohs scale were precision ground by farmers and hunter/gathers who by all accounts hadn't invented the wheel is both preposterous and insulting.
Clearly they came from somewhere else, hunter gatherers didn't make these objects.
Then when they did try to make reproduction vases out of alabaster in the 3rd dynasty they were poor knockoffs. Alabaster maxes out at about a 2 on the mohs scale.
Steel is only about a 4 to 5 on the mohs scale.