/sci/ - Science & Math

>>15900880
>>15901117
I got an idea.
If you build a cloud city big enough, it doesn't actually have to be light.
This is something Buckminister Fuller pointed out.
If you build a geodesic dome large enough, a kilometer or so in diameter, you only need to heat the air inside by about five degrees Fahrenheit to get it to cancel out the weight of the structure itself and float.
This is assuming a dome made out of steel and glass.
This is one of those cases where the square-cube law actually works for you rather than against you.
The structure of the dome is only the surface, but the buoyancy is controlled by the volume; the bigger you build your dome, the greater the payload fraction of the dome is.
A dome large enough to cover Midtown Manhattan (~3.2km) could support the weight of all the buildings in Midtown by raising the internal temperature five degrees and dropping the pressure by one or two percent.
Again, such a structure would be glass, steel, and concrete in construction.
You could get away with a city made from carbon and silicates with meter-thick radiation shields with a self-sustaining population of a quarter million people that could float at STP with a breathable atmosphere.
If you invert the dome, then you have a flat roof you build a runway on; the rest of the surface would be glass embedded with thin cell solar panels to block about half the light, dropping it to Earth normal.
You could supply all the rest of the power with a nuclear plant hanging from the bottom of the dome.
You could put a relatively small and light shadow shield above it to protect the city.
One hundred twenty-five of these domes would give you the population of Canada or the UK; that's plenty enough to have a self-sustaining civilization.
In fact, we could use the very elements of venus to supply free energy on this city.
People could use the very air and heat from below as a self sustaining source of energy.

>>14657671
OPs faggotry and his mom banging 2 negros caused a ripple in space time and began the big bang