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← Every aircraft propulsion system is an air pump, and accelerating a…
11 connected korrents · 11 moments on record from 3 Nov 2008 to 15 Aug 2026.
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nuclear power Same subject Same subject Same subject Same subject Same subject Same subject Same subject Same subject Same subject Same subject Same subject Read this korrent: Every aircraft propulsion system is an air pump, and accelerating a large mass of air a little is always more efficient than accelerating a little air a lot. Every aircraft propulsion system is an air pump, and accelerating a large mass of air a little is always more efficient than accelerating a little air a lot. Last stated 4 years ago
8 Jul 2022
BF
Bjorn Fehrm — holds since 2022-07-08 — tap for who they are
Same subject: Electrification transfers badly from cars to aircraft, because a car engine is under 10% efficient while a modern aero engine is already 30 to 40%. — tap to centre the map on it Electrification transfers badly from cars to aircraft, because a car engine is under 10% efficient while a modern aero engine is already 30 to 40%. Last stated 5 years ago
28 Jan 2022
BF
Bjorn Fehrm — holds since 2022-01-28 — tap for who they are
Same subject: A hybrid-electric airliner ends up heavier and more complex than the aircraft it replaces and delivers no fuel saving at all. — tap to centre the map on it A hybrid-electric airliner ends up heavier and more complex than the aircraft it replaces and delivers no fuel saving at all. Last stated 5 years ago
2 Apr 2021
BF
Bjorn Fehrm — holds since 2021-04-02 — tap for who they are
Same subject: "Food from thin air" is not from thin air: it runs on water, minerals, ammonia and industrial plant. — tap to centre the map on it "Food from thin air" is not from thin air: it runs on water, minerals, ammonia and industrial plant. Last stated 2 months ago
30 Jun 2026
CS
Chris Smaje — holds since 2026-06-30 — tap for who they are
Same subject: A country outside the AI supply chain should just buy the index — which works only in the world where AI ends up commoditised rather than concentrated. — tap to centre the map on it A country outside the AI supply chain should just buy the index — which works only in the world where AI ends up commoditised rather than concentrated. Last stated 3 months ago
4 Jun 2026
AI
Alex Imas — holds since 2026-06-04 — tap for who they are
Same subject: A future of constrained energy will need more people working the land, and that is not the same as going back to the past. — tap to centre the map on it A future of constrained energy will need more people working the land, and that is not the same as going back to the past. Last stated 2 months ago
30 Jun 2026
CS
Chris Smaje — holds since 2026-06-30 — tap for who they are
Same subject: American manufacturing output cannot meaningfully rise without first building large amounts of new electricity generation. — tap to centre the map on it American manufacturing output cannot meaningfully rise without first building large amounts of new electricity generation. Last stated a year ago
6 Apr 2025
MH
Molson Hart — holds since 2025-04-06 — tap for who they are
Same subject: Europe cannot meet its energy needs from renewables alone and will need nuclear power, solar power from deserts elsewhere, or both. — tap to centre the map on it Europe cannot meet its energy needs from renewables alone and will need nuclear power, solar power from deserts elsewhere, or both. Last stated 18 years ago
3 Nov 2008
DM
David MacKay — holds since 2008-11-03 — tap for who they are
Same subject: Most nuclear companies will not have this solved by 2031, and many still will not by 2035, because they have the wrong mindset. — tap to centre the map on it Most nuclear companies will not have this solved by 2031, and many still will not by 2035, because they have the wrong mindset. Last stated 3 weeks ago
15 Aug 2026
IT
Isaiah Taylor — holds since 2026-08-15 — tap for who they are
Same subject: A data centre powered by solar and batteries alone needs an array so oversized that the design is not worth building. — tap to centre the map on it A data centre powered by solar and batteries alone needs an array so oversized that the design is not worth building. Last stated 2 years ago
18 Apr 2024
AV
Austin Vernon — holds since 2024-04-18 — tap for who they are
Same subject: A solar panel is a manufactured object that produces wealth rather than consuming it, at a hundred times the rate of the best farmland. — tap to centre the map on it A solar panel is a manufactured object that produces wealth rather than consuming it, at a hundred times the rate of the best farmland. Last stated 2 years ago
9 Nov 2024
CH
Casey Handmer — holds since 2024-11-09 — tap for who they are
Same subject: A solar system holding a trillion humans is the right thing to aim at, because a population that size would have a thousand Mozarts and a thousand Einsteins alive at once. — tap to centre the map on it A solar system holding a trillion humans is the right thing to aim at, because a population that size would have a thousand Mozarts and a thousand Einsteins alive at once. Last stated 3 years ago
14 Dec 2023
JB
Jeff Bezos — holds since 2023-12-14 — tap for who they are
At the centre
Every aircraft propulsion system is an air pump, and accelerating a large mass of air a little is always more efficient than accelerating a little air a lot.
Holds BF Bjorn FehrmRead this korrent →
Electrification transfers badly from cars to aircraft, because a car engine is under 10% efficient while a modern aero engine is already 30 to 40%.
Holds BF Bjorn Fehrm
A hybrid-electric airliner ends up heavier and more complex than the aircraft it replaces and delivers no fuel saving at all.
Holds BF Bjorn Fehrm
"Food from thin air" is not from thin air: it runs on water, minerals, ammonia and industrial plant.
Holds CS Chris Smaje
A country outside the AI supply chain should just buy the index — which works only in the world where AI ends up commoditised rather than concentrated.
Holds AI Alex Imas
A future of constrained energy will need more people working the land, and that is not the same as going back to the past.
Holds CS Chris Smaje
American manufacturing output cannot meaningfully rise without first building large amounts of new electricity generation.
Holds MH Molson Hart
Europe cannot meet its energy needs from renewables alone and will need nuclear power, solar power from deserts elsewhere, or both.
Holds DM David MacKay
Most nuclear companies will not have this solved by 2031, and many still will not by 2035, because they have the wrong mindset.
Holds IT Isaiah Taylor
A data centre powered by solar and batteries alone needs an array so oversized that the design is not worth building.
Holds AV Austin Vernon
A solar panel is a manufactured object that produces wealth rather than consuming it, at a hundred times the rate of the best farmland.
Holds CH Casey Handmer
A solar system holding a trillion humans is the right thing to aim at, because a population that size would have a thousand Mozarts and a thousand Einsteins alive at once.
Holds JB Jeff Bezos