Re:US support to maintain UK's nuclear arsenal is in doubt
by ben_w on Sunday March 09, 2025 @10:15AM
(#43309193)
I don't understand your reaction.
I gave you a citation, that is about GRBs and interaction with the atmosphere. That's where 100 kJ/m^2 comes from. First page, even, it's in the abstract.
Radiation absorbed dose is measured in Grays, which is Joules/kg, and 8-30 J/kg is the lethal range I gave you, easy to find with trivial search but also so well known you shouldn't need to be told about it if you're serious about rad hazards.
You get from J/kg to J by accounting for mass, and from kJ/m^2 to J by accounting for cross sectional area. Hence 25 kJ actual, and 1 kJ lethal limit.
You can look up radiation mean-free-path shielding constants if you want, but I'm not walking you through what is foundation-level knowledge in this domain. Me, I got that knowledge by having an interest in atomic rockets and fusors back at university, it's not hard to find.
If you can't apply the inverse square law to get Martian sunglight relative to Earth's, or if you don't know about its missing ozone layer or missing magnetosphere, you have no business even thinking about a Mars colony.
At this point, why expect an AI based answer to miss citations when they've got a big friendly button saying "search" right there in the web UI?
I gave you a citation, that is about GRBs and interaction with the atmosphere. That's where 100 kJ/m^2 comes from. First page, even, it's in the abstract.
Radiation absorbed dose is measured in Grays, which is Joules/kg, and 8-30 J/kg is the lethal range I gave you, easy to find with trivial search but also so well known you shouldn't need to be told about it if you're serious about rad hazards.
You get from J/kg to J by accounting for mass, and from kJ/m^2 to J by accounting for cross sectional area. Hence 25 kJ actual, and 1 kJ lethal limit.
You can look up radiation mean-free-path shielding constants if you want, but I'm not walking you through what is foundation-level knowledge in this domain. Me, I got that knowledge by having an interest in atomic rockets and fusors back at university, it's not hard to find.
If you can't apply the inverse square law to get Martian sunglight relative to Earth's, or if you don't know about its missing ozone layer or missing magnetosphere, you have no business even thinking about a Mars colony.
At this point, why expect an AI based answer to miss citations when they've got a big friendly button saying "search" right there in the web UI?