Search found 525 matches

by jseah
Sat Mar 03, 2018 10:37 pm UTC
Forum: Fictional Science
Topic: Magitech society needs a heat engine
Replies: 41
Views: 2484

Re: Magitech society needs a heat engine

Ah, I see. The adiabatic expansion performs work on the piston (integral of pressure over distance moved; which is proportional to volume). The energy from the work done lowers the temperature of the gas, this is where heat capacity comes in. This lowers the pressure of the gas, thereby reducing wor...
by jseah
Fri Mar 02, 2018 2:39 pm UTC
Forum: Fictional Science
Topic: Magitech society needs a heat engine
Replies: 41
Views: 2484

Re: Magitech society needs a heat engine

Apart from the addition of magical spells to create or remove heat, I'm assuming your universe still operates with conservation of energy? (You might even be able to say it conserves all energy, including magical, if the magic used to remove heat energy remains in the world as high-entropy unusable...
by jseah
Tue Feb 27, 2018 3:34 pm UTC
Forum: Fictional Science
Topic: Magitech society needs a heat engine
Replies: 41
Views: 2484

Re: Magitech society needs a heat engine

Tub & Zamfir: The carnot efficiency is independent of the working fluid. Lower heat capacity just means that you need a larger volume to transform the same amount of energy. It is once friction becomes a major loss source in the design, like in a gas-phase heat engine. Higher heat capacity means...
by jseah
Sun Feb 25, 2018 7:44 am UTC
Forum: Fictional Science
Topic: Magitech society needs a heat engine
Replies: 41
Views: 2484

Re: Magitech society needs a heat engine

Hm. Is a high heat capacity a good thing? I thought a lower heat capacity means less energy is required to generate a particular temperature difference? What other properties would a good working fluid have? > Chemically (magically) inert would be good > Production cost? > Containment problems (eg. ...
by jseah
Sat Feb 24, 2018 2:08 pm UTC
Forum: Fictional Science
Topic: Magitech society needs a heat engine
Replies: 41
Views: 2484

Re: Magitech society needs a heat engine

How about N2? Nice and inert for ridiculous temperature differences?
by jseah
Sat Feb 24, 2018 3:45 am UTC
Forum: Fictional Science
Topic: Magitech society needs a heat engine
Replies: 41
Views: 2484

Re: Magitech society needs a heat engine

Would magically cooling the heat sink be efficient? If that Carnot equation says that with a particular cooling scheme, you can increase efficiency by 10%, then would a non perfectly efficient heat engine also increase by a proportional amount? Eg. A given heat engine has a 300 J energy difference b...
by jseah
Fri Feb 23, 2018 7:29 pm UTC
Forum: Fictional Science
Topic: Magitech society needs a heat engine
Replies: 41
Views: 2484

Re: Magitech society needs a heat engine

gmalivuk: A piece of matter at 273 K has a certain amount of heat energy. This is basically heat capacity integrated over 0 - 273 K. Another piece of matter at a higher temperature (say 400K) has exactly twice the heat energy of the first. To cool both to absolute zero would cost exactly double for ...
by jseah
Fri Feb 23, 2018 6:20 pm UTC
Forum: Fictional Science
Topic: Magitech society needs a heat engine
Replies: 41
Views: 2484

Re: Magitech society needs a heat engine

They're limited by available magical power. It's sort of like a fuel, which yes, does not conserve energy, but nevertheless, they are limited by the total amount of magic their infrastructure can gather and store. An analogy would be that magic is sort of like solar power. It's more or less just the...
by jseah
Fri Feb 23, 2018 5:40 pm UTC
Forum: Fictional Science
Topic: Magitech society needs a heat engine
Replies: 41
Views: 2484

Re: Magitech society needs a heat engine

Oh yes, there is a cold spell and it's pretty overpowered in thermodynamics terms. Being exactly as efficient as the heat spell. IE. a cold spell can absorb exactly as much heat energy as the heat spell outputs for the same magical power. And this doesn't get any harder the lower the temperature of ...
by jseah
Fri Feb 23, 2018 2:47 pm UTC
Forum: Fictional Science
Topic: Magitech society needs a heat engine
Replies: 41
Views: 2484

Magitech society needs a heat engine

So I have a story in which a society new to magical technology is trying to come up with an engine that can efficiently convert magical power into physical motion. A quirk of the magic system is that directly moving things yields about 100 times less (joule) energy than heat per magic power unit. Th...
by jseah
Sat Jun 10, 2017 11:58 pm UTC
Forum: Science
Topic: Telescope amplification with laser medium?
Replies: 18
Views: 3410

Telescope amplification with laser medium?

I had a random idea that didn't seem to be obviously wrong at first but I can't find anything about it. The idea is that since stimulated emission produces coherent photons, you can use a lasing medium to amplifying incoming photons hitting a telescope lens. If you don't bounce the beam back and for...
by jseah
Wed Jun 07, 2017 7:10 am UTC
Forum: News & Articles
Topic: The Thread To Remind Me We're Living In The Future
Replies: 1742
Views: 249671

Re: The Thread To Remind Me We're Living In The Future

KnightExemplar wrote:Its that humans figured out how to restate the problem in a form that Computers can solve it.
/dons my True Scotsman hat
I will accept that we have obtained True AI when AIs can do this for arbitrary input data and desired output pairs.
by jseah
Mon Mar 06, 2017 3:32 am UTC
Forum: News & Articles
Topic: Global War on Drugs has Failed
Replies: 126
Views: 27216

Re: Global War on Drugs has Failed

Coming from Singapore, I'd say sg has a more restrictive stance.

Mandatory death penalty for smuggling > 15g of drugs. Can't get any worse than that.

It works though, at the cost of ~130 executions a year. (Iirc Singapore's drug abuse rate is something like 4k in a population of 5 million)
by jseah
Tue Jan 24, 2017 12:40 pm UTC
Forum: Serious Business
Topic: Citizen's Wage
Replies: 942
Views: 178913

Re: Citizen's Wage

Actually, no, the for profit company simply does not exist in a socialist society. What you seem to be thinking is that competition is inherently binary - you either succeed or you fail. But established brand has the advantage. If your market isn't buying, focus on a different market. As for R&...
by jseah
Sat Jan 21, 2017 5:59 am UTC
Forum: Serious Business
Topic: Citizen's Wage
Replies: 942
Views: 178913

Re: Citizen's Wage

The worker's cooperative sees they can have their products built in China, but will not move production to China because they will lose their jobs. Productivity is improving, so they improve automation, maybe some lose their jobs but 100% of the gains go to the workers, and instead of competing wit...
by jseah
Fri Jan 20, 2017 4:39 pm UTC
Forum: Serious Business
Topic: Citizen's Wage
Replies: 942
Views: 178913

Re: Citizen's Wage

The reason why things are so shitty, why there is so little hope and so much despair is because we spent the last 30 years working on taking all the power away from the worker we can; and what's the result? All economic gains went to the top, and economic growth is slow and the economy uncertain an...
by jseah
Fri Jan 13, 2017 7:12 am UTC
Forum: Fictional Science
Topic: Pitfalls of a fantasy commodity currency
Replies: 3
Views: 2371

Pitfalls of a fantasy commodity currency

I'm contemplating for my story a commodity currency system that was implemented as a solution to a lack of money supply (previously a currency of precious metals). Given that this is a magitech fantasy setting (or about to get there), the commodity proposed is crystallised magic. This has a number o...
by jseah
Wed Oct 19, 2016 2:15 am UTC
Forum: News & Articles
Topic: 2016 US Presidential Election
Replies: 8482
Views: 862775

Re: 2016 US Presidential Election

There's actually a platform, yknow. You can go read it if you want to know what's popular among the Libertarians. https://www.lp.org/platform I read the bits on the landing page. Sounds good but a little too hands off. No quibbles on the social aspect. But the economic portions seem to ignore the p...
by jseah
Thu Oct 13, 2016 10:38 pm UTC
Forum: News & Articles
Topic: The Darker Side of the News
Replies: 3647
Views: 440157

Re: The Darker Side of the News

Why would the actual requirements not be "sexy young woman"? Seems like a reasonable thing from the perspective of the hosts. This is also likely to be a wishlist of sorts. And there are also personality requirements. Eg. A woman who fits all of it but is too flippant and undedicated would...
by jseah
Wed Sep 21, 2016 2:09 pm UTC
Forum: News & Articles
Topic: Acutaries on Pensions, & Housing
Replies: 115
Views: 14434

Re: Acutaries Cooked The Books on Pensions, (Maybe?)

Land is pretty finite. Yeah, you can, in theory, build new land by messing with the ocean or whatever, but that's usually not exceedingly cheap or easy. City densities are nowhere near the limit of what is possible. Even the most land starved cities can cram in much more people. (infrastructure wil...
by jseah
Wed Sep 21, 2016 1:45 pm UTC
Forum: News & Articles
Topic: Acutaries on Pensions, & Housing
Replies: 115
Views: 14434

Re: Acutaries Cooked The Books on Pensions, (Maybe?)

Diadem wrote:As CorruptUser points out, the number of houses is fairly fixed.

Why is this the case? New homes can be built fairly quickly and easily. Construction wise, there really shouldn't be any more than a couple of months lag between demand and supply.

Sounds like that is the problem to me.
by jseah
Sun Aug 21, 2016 8:50 am UTC
Forum: Serious Business
Topic: Fictional Economics - Deflation in Basic Goods prices
Replies: 65
Views: 12423

Re: Fictional Economics - Deflation in Basic Goods prices

The LOTR saga is a cautionary tale of the results of dragonslaying hyperinflation. This reminds me why I love this forum. That said, I suppose the more natural result would be that the developing country sucks in all the money from the nearby countries (possibly even the entire world). Puts a new n...
by jseah
Tue Jun 28, 2016 3:36 am UTC
Forum: News & Articles
Topic: 2016 US Presidential Election
Replies: 8482
Views: 862775

Re: 2016 US Presidential Election

There is simply no reason why you cannot achieve full employment, regardless of what the minimum wage is, provided you give the markets time to adjust. Given that the alternative route is available to bypass minimum wage, raising minimum wage will lead to it being used more. I should just say, cete...
by jseah
Tue Jun 28, 2016 1:29 am UTC
Forum: News & Articles
Topic: 2016 US Presidential Election
Replies: 8482
Views: 862775

Re: 2016 US Presidential Election

Thesh wrote: This is simply Baumol's cost disease.

If the equilibrium wage is less than minimum wage, and there are ways to get around the minimum, raising the minimum wage will increase the proportion using the workaround.

The cost disease refers to a rise in the equilibrium wage.
by jseah
Fri Jun 24, 2016 9:53 am UTC
Forum: News & Articles
Topic: British EU referendum in June [update: Leave wins 52% - 48%, politics ensue]
Replies: 1119
Views: 133607

Re: British EU referendum in June

Reducing migration could be as simple as imposing a cap. Say the goal is 50k per year (half): Implement a points or ratings system. The top 50k scorers get their visas, the rest don't. Ties are decided by lottery (and inform the ones who fail that they were on the cutoff and maybe try again next yea...
by jseah
Fri Jun 17, 2016 12:16 am UTC
Forum: News & Articles
Topic: 50 Dead, 53 Injured in Orlando Gay Club Shooting
Replies: 490
Views: 53812

Re: 50 Dead, 53 Injured in Orlando Gay Club Shooting

Tyndmyr wrote:But...about 4.4% of the US population is prisoners. If 9.4% of them are Muslim, and that's still about .9% of the population...that means that nearly half the US Muslim population is in jail right now.

That's kind of significant.

4.4 * 9.4 / 100 = 0.4136

9.4% of 4.4 is 0.41 not 0.9?
by jseah
Tue Jun 14, 2016 4:14 am UTC
Forum: News & Articles
Topic: 50 Dead, 53 Injured in Orlando Gay Club Shooting
Replies: 490
Views: 53812

Re: US Anti-LGBT policy lead to 50 dead in Orlando Nightclub Shooting

What the hell are we doing wrong that a person with that mindset still feels comfortable enough to live around the rest of society? Uh, I would think that his actions indicate he's NOT comfortable living around the rest of society. Otherwise he wouldn't be shooting the rest, yes? Or do I misunderst...
by jseah
Tue Jun 07, 2016 3:17 pm UTC
Forum: News & Articles
Topic: Society pays tab for personal liberty
Replies: 70
Views: 11421

Re: Society pays tab for personal liberty

And I would suggest, without, admittedly solid facts to back it up, if you look at the NYC-DC corridor, you'll find a higher average density than any similar area in the world, possibly excepting the Ganges river valley. ETA: Okay, maybe not, but it's in the top 10. This is where I refer to where I...
by jseah
Thu May 05, 2016 11:49 pm UTC
Forum: News & Articles
Topic: Trans Pacific Partnership Deal Reached
Replies: 94
Views: 19208

Re: Trans Pacific Partnership Deal Reached

I'm reading the labour section now. Well it's a bit short on specifics but some parts are quite laughable. Eg. The malaysia part doesn't mention the bumiputra benefits which is a major barrier to foreign investment. Minimum wage laws? Unenforceable, cheating on sales tax is already hard to catch and...
by jseah
Thu May 05, 2016 5:39 am UTC
Forum: News & Articles
Topic: Trans Pacific Partnership Deal Reached
Replies: 94
Views: 19208

Re: Trans Pacific Partnership Deal Reached

Yes, that would be the point. But it does not change the fact that labour is cheaper is South East Asia than in the US and we run a more or less permanent current account surplus wrt US.
by jseah
Thu May 05, 2016 12:32 am UTC
Forum: News & Articles
Topic: Trans Pacific Partnership Deal Reached
Replies: 94
Views: 19208

Re: Trans Pacific Partnership Deal Reached

Singapore is small enough that if you started from any point and went 90 km in any direction, you wouldn't be in Singapore anymore. =P this also means that level of traffic control is absolutely required. There are 5 million residents on an island 40km across. But yes, that was just an explanation f...
by jseah
Wed May 04, 2016 9:38 am UTC
Forum: News & Articles
Topic: Trans Pacific Partnership Deal Reached
Replies: 94
Views: 19208

Re: Trans Pacific Partnership Deal Reached

Singapore is special. All car prices are inflated regardless of origin due to the COE system (government caps total number of cars by auctioning car ownership licences, you need one per car, valid for 10 years only, non-transferrable). Even domestic cars have to pay this too. This COE is usually a f...
by jseah
Wed May 04, 2016 4:44 am UTC
Forum: News & Articles
Topic: Trans Pacific Partnership Deal Reached
Replies: 94
Views: 19208

Re: Trans Pacific Partnership Deal Reached

The tariff thing sounds like it is a big win to the US however. If the tariffs come down in Singapore / Malaysia, then it should help manufacturing in the US and even the odds against Japan. Considering that the US practically wrote the deal, we would expect that most of the benefits would flow to ...
by jseah
Tue May 03, 2016 4:26 am UTC
Forum: News & Articles
Topic: Trans Pacific Partnership Deal Reached
Replies: 94
Views: 19208

Re: Trans Pacific Partnership Deal Reached

The US benefits too. Namely gaining influence in the region where China is threatening to loom large.
by jseah
Tue May 03, 2016 4:10 am UTC
Forum: News & Articles
Topic: Trans Pacific Partnership Deal Reached
Replies: 94
Views: 19208

Re: Trans Pacific Partnership Deal Reached

Well, in the end, the deal benefits export oriented economies like Malaysia. We might have to give up some tariffs but but the majority of industries will benefit. Even non export oriented Singapore will benefit from the increased trade since Singapore's a major port. Not being able to pirate movies...
by jseah
Mon May 02, 2016 11:41 pm UTC
Forum: News & Articles
Topic: Trans Pacific Partnership Deal Reached
Replies: 94
Views: 19208

Re: Trans Pacific Partnership Deal Reached

@political feeling: SG/MY Random ppl: TPP? What? Can eat ah? My friends: Meh, our political superiors know better. (Singapore only) The more cynical: corrupt politicians lining their pockets again! (Malaysia only) But more generally, we like the attention the US is giving us. China is worrying and f...
by jseah
Mon May 02, 2016 10:53 pm UTC
Forum: News & Articles
Topic: Trans Pacific Partnership Deal Reached
Replies: 94
Views: 19208

Re: Trans Pacific Partnership Deal Reached

KnightExemplar wrote:
In Malaysia, for example, American motor vehicles face tariffs of 30%, while motor vehicles from Japan, Turkey, and elsewhere face no tariffs.


speaking as a Malaysian here, imported cars have some ridiculous tariff. Certainly more than 30%, more like 100%.
by jseah
Fri Apr 22, 2016 11:13 pm UTC
Forum: Serious Business
Topic: Fictional Economics - Deflation in Basic Goods prices
Replies: 65
Views: 12423

Re: Fictional Economics - Deflation in Basic Goods prices

ucim: In an era of weak central government, how would suppression of reading even work? It's not like you can tell if someone can or cannot read just by looking at them. Zamfir: An interesting read. I did some light reading on Wikipedia regarding the history of banking, the grain debt trade was rath...
by jseah
Wed Apr 20, 2016 10:12 pm UTC
Forum: Serious Business
Topic: Fictional Economics - Deflation in Basic Goods prices
Replies: 65
Views: 12423

Re: Fictional Economics - Deflation in Basic Goods prices

Much of the "economy" was in-kind payments. And credit - don't underestimate that part. You see a lot of mention of coinage in medieval documents, but that doesn't always imply actual coins. Just as our contracts don't imply suitcases of bills.<...>So, actual metal coins are not as crucia...
by jseah
Wed Apr 20, 2016 8:43 am UTC
Forum: Serious Business
Topic: Fictional Economics - Deflation in Basic Goods prices
Replies: 65
Views: 12423

Fictional Economics - Deflation in Basic Goods prices

I'm not sure if this is the right subforum, but couldn't find an analog of Fictional Science. So the situation I'm considering here is a scenario where a pseudo-medieval society finds a cache of well-index and explained modern day science (it comes with a librarian). Assume also that the printing pr...

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