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Comment Re:Terawatt in space? My ASS! (Score 1) 125

Around a billion m2 of heatsink, it's a little much.

The heatsink can be very light though, they need no real structural strength beyond being able to contain the pressure of the refrigerant (say ethanol at around 1 bar in lots of parallel channels in a thin sheet). The PV can be even thinner.

Comment Re:In est in lab meat (Score 1) 24

No, what we need is to stop being assholes. The moment hedonism is a valid excuse for animal agriculture, no matter how close you can get will never be enough. Animal agriculture is symptomatic of the fact that we are at a standstill or even regression of moral progress, though other symptoms are a little more obvious at the moment.

Of course humans won't stop being assholes, I'm not volunteering, but maybe AI will nanny us instead of just choosing plain eradication.

Comment Re:I don't think he is talking about satellite lev (Score 1) 147

The refrigerant wouldn't be boiling off, refrigerant cooling just works at conveniently relatively fixed temperatures. Liquid cooling needs more mass, but more importantly you get larger temperature gradients in your cooling blocks and radiators.

Even here on Earth there are now companies using boiling refrigerant in cooling blocks for GPUs rather than liquid cooling.

Comment Re: This is concerning (Score 0) 147

ISS is not in polar orbit. The batteries and weight needed to accommodate humans are so dominant there was never a need to truly optimise for weight for PV&radiator. In fact no satellite has ever had much use for the PV weight optimisation these polar orbit data centres can benefit from. Good enough is good enough, other parameters were more important.

Best possible for the space data centre is much lighter, Not much better in the existing applications, because PV/radiator weight had already pretty much stopped mattering there, but still much lighter.

Comment Re:I don't think he is talking about satellite lev (Score 1) 147

Radiators.

I don't know if it will be better to use heatpumps or just use more area. With heatpumps, you could probably get away using front for PV and back for radiators. Without heatpumps you'd probably have a bunch of the sun side area be mirrored, with more radiator area than PV.

Comment Re: This is concerning (Score 1) 147

As I've said before, the heat the back of the solar panel can reject at reasonable temp (near 100C) is in the same region as the front can generate (not taking into account earth visibility though, too hard for back of envelope). So cooling seems the easier problem. Capturing energy is just a question of more light weight (flexible) panels and a polar orbit for non stop sunshine.

LEO with never seen before surface area to weight ratios might be an issue.

Comment I don't think he is talking about satellite level (Score 1) 147

They don't make satellites.

Their problem is probably more making lightweight boiling refrigerant based cooling blocks which can keep the their system cool in a vacuum, including PCB, connectors, cables, etc. Dumping the heat from refrigerant to space is not their problem.

Comment Re:Pot calling kettle black (Score 1) 43

LCD with LED backlighting being advertised as LED TV's preceded mainstream availability of OLED TVs.

Should Samsung then market theirs as QLED-LCD TVs when the previous generation was still being marketed as LED TVs? For technical correctness sure, but it's not entirely fair, QLED is a major advancement over white LED light with colour filters.

Comment Re:âoeUse of the work for any purpose without (Score 5, Insightful) 54

That's not the real question, that's a silly distraction. There are a ton of literal copies made long before the LLM outputs anything to users.

If training is fair use, the final output is too. Bartz v. Anthropic ruled it fair use, which I think was insane ... but what judge will cripple a multi-trillion dollar industry over sanity? Need some pretty big balls.

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