Catch up on stories from the past week (and beyond) at the Slashdot story archive

 



Forgot your password?
typodupeerror

Comment Re:Donald Idocracy Trump Stikes Again (Score 3, Interesting) 105

You don't work in a Fortune 500 company, eh?

Public companies do ALL KINDS of things aligned to the quarter. It's exhausting and there is a ton of pressure to do this or that within this quarter. I think a little longer "lens" will provide more insight to investors and cause less constant churn within companies so they can focus more on providing value and less on getting A, B and C done within a specific quarter.

Comment Re:Facts behind it (Score 1) 82

The fact that I specifically invoke the concept that REQUIRES it as baseline to be a viable concept never enters your mind. Because you don't think with concepts.

I do think with concepts. They get translated into words to post here, because that's how slashdot works. I think about the square-cube law, I'm actually picturing a 3D cube in my head.
What you haven't done is make any acknowledgement of the concept that while a sand battery might not be efficient at the scale of a house (for example), the bigger it gets the more efficient it becomes. A house might not be enough space - though there are plenty of thermal mass solutions for houses, such as masonry heaters. But this is a district system, 1-2 orders of magnitude larger.
Look at the history:
1. You reply to me, wondering how it can be efficient due to heat loss.
2. I reply, mentioning that the square-cube law means that it won't actually have that much surface area relative to the volume, giving several examples (like an office building).
3. "All heat exchangers are fundamentally surface increase mechanisms." does not imply philosophical heat exchangers that include unintended exchangers or even insulated structures, which are designed to minimize surface increases.
4. This is storage, not a designed radiator; they've optimized for the opposite
5. Accusing me of not understanding.
etc...
You never actually specifically invoked the concept.

Comment Re:Different Goals (Score 1) 77

Well, our language is littered with it - ATM Machine, PIN Number, LCD Display, UPC Code, DMZ Zone, Free gift, new innovation, etc...

Personally, I don't think "the patriarchy" actually exists, at least not in the form attributed to it. While Marx was very off base in a lot of things, I think that what people mistake for patriarchy is actually class dominance. Most men don't have the advantages they would actually have if there was actually a patriarchy enforcing male rule.

What a lot of people tend to miss is that while Men might have more hard power - by law due to their position, wealth, strength of arm, and all that, that women have a lot of "soft power". The ability to convince others to do things without actually having any legal requirement to do so.

I tend to start comparing humans to lion packs in this case. A few powerful and lucky men get many of the women, and while it might look like a heady and desired position, it's a lot more fragile than most think, and only a fraction of men get it. Women actually have a much easier time of it on average, even if they don't reach the lofty heights.

Comment Re:roundabouts (Score 1) 181

Nobody needs education about roundabouts

You clearly haven't seen how drivers in the USA like to handle them. Inconsistent signage doesn't help.
Though other people pointing out that people, even Americans, get used to them fairly rapidly is true. We have an increasing number in my local area, most people handle them fine now.
I learned how to handle them in Germany.

Comment Re:Facts behind it (Score 1) 82

"Seem" would be the point. Unlike many Americans, I'm well used to cogeneration plants. Eielson AFB has one, Fort Wainwright does, University of Alaska Fairbanks does as well.
Yes, I'm well aware of the temperatures involved.
Using a heat pump on the sand would be to reduce the heat levels necessary. And no, no super rare golden grade refrigerant required. Propane, Ammonia, R-32, all of it would work.

As for words vs concepts. You still don't seem to have grasped the square cube law. It's not like I can draw a picture on slashdot.

I'm well familiar that "everything is a heat exchanger", but outside of that philosophical point, when you say heat exchanger, I assume a dedicated designed one, made to exchange heat efficiently in a relatively small area with relatively small or cheap materials.
A cooler is still a heat exchanger, but it's designed to impede that.

A great big huge box of sand ends up being effectively well insulated just because of the high mass to surface area ratio.

Comment Re:We need every solution (Score 1) 49

Thing is, the biggest cargo ships these days, the ones you'd want nuclear powered first, would easily have the volume/space necessary for a nuclear power plant once you remove the fuel bunkers.
Even the bigger reactors from using only mildly enriched uranium.
Personally, I don't think it's that big of an issue.

Comment Re:We need every solution (Score 1) 49

There are a lot of nuances here.
1. Primary safety increase for naval reactors is their small size, not weapon grade fuel. 150-250 300MWt vs up 6GWt for a nuclear power plant. Note MWt and GWt is referring to thermal power. They're only about 33% efficient at turning it into electricity. Makes passive cooling easier, plus ships have effectively unlimited cooling water available.
2. We burned an awful lot of weapon grade uranium, mostly from Russia, in our power plants. Diluted it down first, of course.
3. Enriching to weapons grade is very expensive, a big reason for avoiding it when not necessary. Stealing it from an active reactor, even coast guard, is more a recipe for dead thieves from radiation poisoning than a working bomb.
4. We wouldn't be selling nuclear icebreakers to dodgy companies.

Comment Re:Earth is in no obligation to support human life (Score 1) 49

Advocating that society should be engineered towards resilience is not a new thing, it's what keeps us safe from earthquakes, for example.
You have no guarantee that we can stop global warming. I happen to think we will not. Too many politics, laziness and complacency.
It is not an unreasonable demand, what we try to build better insulated houses, further away from the sea. Just in case.

Comment Earth is in no obligation to support human life (Score 1) 49

We should spend more time getting ready for the fact that, even though we created global warming, Earth has warmed and cooled of its own volition in the past and is not contractually obliged to hold a comfortable temperature range or a certain sea level. Species adapt or die. Stop building in floodplains maybe?
Now that we know the ice caps can melt and raise sea levels to a certain height, maybe we should go live in a high place.
What are you going to do if the sun suddenly warms up in an unexpected way, are you going to try cooling down the sun?
Shouldn't we at least have a plan B in case we can't immediately fix this?

Slashdot Top Deals

System going down at 1:45 this afternoon for disk crashing.

Working...