26-01-2023, 11:13 AM
(This post was last modified: 26-01-2023, 11:16 AM by Mike Watterson.)
Even not obsolete tech. There is also proprietary info only in a company, but companies go bust.
Try assembling detailed info (not just general principles) to cut silicon boules into wafers that can be processed. Imagine you haave a furnace for each doping. Try documenting complete step by step to make a 741 op-amp or a 4000 series logic gate or a power FET (hint: they are multiple parallel FETs on one chip).
Or how would you make a halogen lamp or florescent tube? The broad explanations are easy, a manufacturing step by step recipe is harder.
Some things seem easier, like pre-1970s piston engine car. However if you were working from scratch rather than buying parts how do you make:
Triplex glass
Piston rings
brake shoes
metal pipes for brakes
rubber / plastic pipes
sparkplugs
the light bulbs
wire to wind starter motor, generator and ignition coil
Tyres
Or if you can't buy aluminium and steel and scrap is unavailable how do you really make those from scratch?
A working copy of wikipedia would be no use after an apocalypse because by design it doesn't have step by step "how to". Wikihow isn't part of Wikipedia, but it's not much use on the majority of tech from scratch. https://www.wikihow.com/Main-Page
Try assembling detailed info (not just general principles) to cut silicon boules into wafers that can be processed. Imagine you haave a furnace for each doping. Try documenting complete step by step to make a 741 op-amp or a 4000 series logic gate or a power FET (hint: they are multiple parallel FETs on one chip).
Or how would you make a halogen lamp or florescent tube? The broad explanations are easy, a manufacturing step by step recipe is harder.
Some things seem easier, like pre-1970s piston engine car. However if you were working from scratch rather than buying parts how do you make:
Triplex glass
Piston rings
brake shoes
metal pipes for brakes
rubber / plastic pipes
sparkplugs
the light bulbs
wire to wind starter motor, generator and ignition coil
Tyres
Or if you can't buy aluminium and steel and scrap is unavailable how do you really make those from scratch?
A working copy of wikipedia would be no use after an apocalypse because by design it doesn't have step by step "how to". Wikihow isn't part of Wikipedia, but it's not much use on the majority of tech from scratch. https://www.wikihow.com/Main-Page
