90 posts • joined Saturday 14th August 2010 18:28 GMT
Oops, must stop posting late at night when tired, etc.
Paraffin is 9kWhr per litre
So at 25% efficiency we get roughly 2500Wh for a dollar or 25000 for the USD 10 this thing is expected to cost.
So at a deciwatt we are talking about a quarter of a million hours before it pays back.
Will it last that long?
Aplogies in advance if I have dropped/added a few powers of ten again.
Sounds like another 'designer' not living in the real world.
Here in Norway paraffin costs about a US dollar a litre and delivers about 9kWh per litre so if we can assume very roughly 25% conversion efficiency in some sort of thermoelectric converter and round a bit we get 2.5kWh per dollar so the device is worth 25kWh if it sells for USD10. At one deciwatt that is 250 hours before it breaks even. The question is: is 0.1W of light worth having.
For a bit more you could buy a 1.5W @ 12V solar charger and a few nicads (source Maplin's website). Assuming we are talking about a warm country we can rely on say 5 hours of sunshine giving 7.5Wh per day, if the battries convert this at 25% we have roughly 2Wh per day for zero mechanical effort. If it is used for four hours in the evening that is 0.5W, five times the output for twice the price using off the shelf components that are getting steadily cheaper and are easily obtained all over the world and are maintanable by people who have only simple tools.
Actually what bothers me most about the Deciwatt is the website and its utter lack of numerical information.
Re: If they allow copyright on APIs ...
Has the US ceased to be a common law country? US courts take account of precedent as well.
To say that they ignore everything except the argument and the law better descirbes Roman law countries (except that precedent does have a role in those even if it is less important than in common law jusrisdictions).
I suspect that the higher courts are also well aware of legal developments in other legal systems and may well use knowledge of them to inform decisions in their own jurisdictions.
IANAL etc. (and I suspect you are not either).
Re: Bedtime stories
I have a vague memory of a story about a parachute drop that starts as though one of the characters is a peacenik conscript and he is objecting to the dropping of bombs or agent orange but it turns out that what they are dropping is toilets and the hardbitten professional marine is the good guy; Robert Heinlein I think.
That's odd, I vaguely remember having almost no trouble.
I had Debian running on a bunch of DEC Alphas. Not really any problem at all, certainly no assumption that Windows would be used. Brilliant machines used to run ProE on DEC OSF that were thrown out when the company decided that an all Wintel system was the way to go. Then they had to buy Intel hardware that was nominally twice as fast with twice as much ram to ProE to work as well as it did on the Alpha's.
I got four of them for nothing.
It was a bad day when DEC went under.
Re: How to fix a MacBook
Don't you think it possible that you missed an attempt at lightening the atmosphere here with a little humour?
Where did you stay?
You should give the hotel some publicity by telling us where it is and what it's called.
Have a beer on me.
The post is required, and must contain letters.
Warranty is usually not important. Assuming you are in, and bought the device in, the EU or Scandinavia, especially the UK or Norway you should stand on your Sale of Goods Act rights and demand a repair or replacement on the grounds that goods of this class are expiected to have (in Norway at least) at least a five year lifetime. Of course after the first year or so you can't expect the seller to bear the whole cost unless you can demonstrate that the good were not of merchantable quality but you certainly should not have to pay the full cost of replacement or repair. Perhaps I'm just lucky to live in a country (Norway) where the law is on my side and suppliers take their responsibilities seriously. For example I bought an high end AUS motherboard, AMD 64 bit CPU and a good chunk of RAM from Komplett in Norway, Three years later it failed and I couldn't figure out what was wrong, Komplett have all my order history on line so I simply logged in, found the order and submitted a failure report and asked what, if anything they could do.
After a couple of emails to clarify what might or might not be wrong they said send it back. A week later I had an email saying they had sent the full purchase price to my bank account.
Needless to say I a good chunk of it at Komplett buying a replacement.
And of course here is the usual disclaimer: I am only affiliated with Komplett as a satisfied customer.
Re: Looks like the family is lying about the LOL jk
As an American friend of mine is wont to say: And your point is?
Re: Unit of data
>but who charges that much in the UK?
I was wondering the same. Here in Norway on my PAYG (Chilimobil) I pay the equivalent of about 12p per MB. And that is expensive per MB here but my data traffic isn't enough to warrant an all in contract. For what he paid I could download a TB but I would have to be downloading for 12 hours a day at about at the maximum rate a 3G connection can manage.
So it seems to me there are other questions to ask Orange beyond the obvious ones about mis-configured handsets.
Re: Bad ideas never die...
Scandinavia is not a monolithic block you know. Which bit of it do you hail from? As far as I am aware Norway has no identity card even if you want one. I've lived here for over 25 years now and never heard of such a thing except occasionally as something that some politicians would like to introduce.
Re: I guess that it's back to using Google then.
Can El Reg provide a feature that hides AC comments?
Re: What an arsehole...
For me the principal problem with the article and a lot of the comments is the lack of context. Too much of both seems to rely on the reader possessing a lot of background information.
For instance "choosing to do it my email" suggests that it would have been practical; is it?
I suspect not as Carvalho Chahab lives in Brazil and Torvalds in Oregon but I had to consult a couple of web sites to find out (https://www.linux.com/news/special-feature/linux-developers/636068-30-linux-kernel-developers-in-30-weeks-mauro-carvalho-chehab, https://en.wikipedia.org/wiki/Linus_Torvalds).
For what it's worth (not much) I think that it is rarely worth swearing in public, it tends to distract observers from the point that is being made.
And, off topic, why the fuck does El Reg not turn properly formed URLs into hyperlinks in comments? Swearing included because I doubt that any attention will be paid to the point so I might as well let off steam.
Re: Red keys? Nah. Get yerself one o' these...
That reminds me of my Nascom-2 which had the best keyboard I've ever used. No crappy mechanical switches in it, it had Hall effect switches if I remember right. Probably still have it somewhere, I wonder if I could get it hooked up to a PC?
Re: User Rights and Facts
You wrote a very long piece but didn't give us the most important information which would be a link to a resource that backs up your assertion that "all rights reserved" has the meaning you attribute to it.
Your name isn't Max is it?
Sounds like Max's autonomous corporations in Charlie Stross' Accelerando.
Only five books is a major problem. On my Nokia N9 I have pretty much all of Sherlock Holmes, the BASH Beginners Guide, On Lisp, Alice in Wonderland, The Origin of Species, loads of Wodehouse, Frederick Pohl, Montaigne, Dante's Divine Comedy, Treasure Island, etc., etc. It gives me something for every occasion.
Can't see it working out unless they have some magical way of getting the hardware cost down so that the 10EUR is actually a substantial fraction of the cost.
Plus it only has a five inch screen so I don't see that it is enough better than the 3,9 inch N9 to warrant carrying another device.
Re: Why should a key fob be a problem?
I'm not that well informed on the specifics but as a onetime designer of hardware I would certainly include some kind of control channel so that it would only broadcast when a suitable receiver were in range. Otherwise it will be very wasteful.
Re: SI señor
All the Americans I know say Imperial units but what they really mean is US Customary.
The volume measures differ even when they have the same name.
And a message to our hosts: why don't URLs turn into links?
Perhaps you could enlighten us then.
Why should a key fob be a problem?
Are they seriously saying that this thing pumps out energy without any kind of handshake to make sure that what goes out is actually being delivered to a suitable sink?
Or is it that it generates so much interference to keyfob transponders that the car will suddenly think that they key has disappeared and disable the car while belting down the autobahn at 200kph?
A couple of extra lines in the article would have made it a lot more informative for those of us who haven't been close following developments in wireless charging.
I suppose I'll have to go and read the pdf.
Well, now I've read it. It looks to me as though it is going to interfere with pretty much everything in the car even when installed correctly. I'll make do with USB.
Tesla beat Edison not because he used AC but because the use of AC meant that he could use higher voltage and therefore lower current. Until a few decades ago conversion to and from HVDC was difficult and expensive. Now, comparatively, it is neither. When Tesla was at the peak of his abilities there were no controllable high voltage valves, even when they did become available they were bulky, expensive, and fragile. ASEA started development in the 1930s but real systems weren't up and running (as far as I know) until the 1950s.
See https://en.wikipedia.org/wiki/High-voltage_direct_current for an overview. This shows a lot of DC interconnects in Europe and points out that the longest in the world is in China, just over 2000km.
I suppose at this point I should reveal that I work for ABB which makes these things (althoughin a related division). Of course I speak for myself not ABB, etc.
Re: Penny wise, pound foolish.
Perhaps you could explain why we have high power DC interconnects between France and England, Norway and Denmark, etc. if the laws of physics make it unworkable. Yes transmission losses in low voltage high current AC lines are high which is why the electricity transmission industry has been building ever higher voltage transmission lines. Now that we have effective high voltage semiconductor switches we can use DC instead which dramatically reduces the losses and also enables networks of differing phase, frequency and impedance to be connected together.
Interconnecting national grids allows, for instance, solar power to be sold to areas where it is dark. And yes I am aware that all this needs a large investment and a higher degree of political stability than obtains in some areas but it requires no new technology, it can be implemented now. The technology involved is scalable and much of it can be built incrementally.
Did they? Can someone provide some backing for the belief that he is on the register? DM doesn't mention it, nor the Sun or the Telegraph.
Re: Jury Nullification
Since the rule against double jeopardy has been abolished I'm not sure jury nullification as powerful as it was in the 19th century when juries started to refuse to convict when the punishments for trivial offences was transportation or hanging.
Now the CPS could try again, under some circumstances at least.
And I wonder if a jury refusing to convict when the evidence was admitted in a strict liability case might not arguable be grounds for declaring a mistrial an starting again.
I'm not a lawyer, just thinking out loud. I'm also not resident in the UK either.
Also there have been mutterings about getting rid of juries both in the UK and Norway.
We need a head in the hands despair icon.
Re: tags for all?
Especially if they are so small that they don't get noticed. Could make smart dust a reality.
The only thing that made me get new
I use a contactless card on the bus every day. It certainly doesn't take two seconds to recognize that I have paid for a month of travel and tell me how many days I have left.
But this is in Norway, perhaps it is better implemented here. (Not everything works well here either I do realize).
premises where the Royal mail and others can drop off packages for collection
In civilized countries like Norway this is what the post and other couriers already do. The local supermarket, petrol station, florist, whatever, takes delivery, the courier sends you a text saying it is ready for collection and you pick it up on the way home from work. As a lot of these places are open until 21:00 and open at 07:00 (or 24 hours a day in the case of petrol stations) this is a lot more convenient than going to the sorting office (which here would be at least 25km away).
In densely populated areas the post will also call you to arrange a parcel delivery to your door in a two hour window in the evening.
Re: New plan
Reminds me of this post http://m.forums.theregister.co.uk/post/424485
Can't find any other source for the supposed quote but even if it isn't real it should be. There is a tendency to think that spending money makes things better when in fact it is getting what you actually need that counts. Where I live (Vestfold, Norway) practically every class room has a full scale audio-visual system, students in the academic line (studiespesialiserende) in senior high school (videregående) have officially provided (though not paid for) laptops, and as far as I can tell this has zero effect on the quality of the education provided. I speak from experience having had one child through the system before all this was common, one who attended when it was new and the third is now going through the same process with as far as I can see no greater quality of education than the previous two. If it doesn't result either in a reduction in teaching costs or in an improvement in the outcome then what is the point?
Re: Not just prototyping
You beat me to it.
In addition to having the manufacturing fully automated my dentist has a screen in front of the chair so you can see the 3D model and then watch the progress of the cutter as it creates the crown. Not only much faster and accurate than the old way of doing it but fascinating to watch.
Unfortunately most countries either already have or are proposing to institute similar rules. Or in the case of countries like USA the security services simply ignore the rules against wiretapping.
Re: it's pretty obvious how to turn it off
The snide remarks about Opera are tiresome. And anyway Opera 12 has a Do Not Track option, and the default is off.
Re: And what..
>TFA didn't become practical in the consumer sphere until recently
Not at all. My bank here in Norway uses two factor authentication with printed one time pads by the simple expedient of sending me a credit card sized printed one time pad in the post. When I log in the web site asks for a specific one of the numbers in addition to my id number and a password that I can set myself. When it has used about two thirds of them it sends out a new pad.
Now I can also ask it to send send a time limited one time code as a text to my registered mobile so I can use either and I don't need to be concerned about not being able to log in if my mobile is not available.
Downvoted for trying to make out that something so simple can only be made practical by the application of high technology.
Re: Why C
>makes good reading for any C programmer
Not just C programmers. A lot of the rules in the JPL Coding Standard are worth following in any imperative language. Also it is written in an admirably down to earth style.
Summer? I take you don't know much about Scandinavia. It is now only 10 deg. C in the midle of June here in Norway 40km south of Oslo. And the cooling plant would not be shut down in the winter it would be used to transfer the waste heat to a district heating system via an industrial scale heat pump of the same sort that we use to pump heat out of the river here to warm up pavements to keep them ice free.
Perhaps they should locate them in a country like Sweden where district heating is very common, or Norway where it is becoming common, then all, or at least a lot, of the waste heat can be used for space heating and keeping pavements clear in the winter.
I know this is strictly off topic
but why has the Register never covered any of the launches by Copenhagen Suborbitals? See http://copenhagensuborbitals.com/ for some real professionalism on an almost non-existent budget.
Non lucror, exposita scientia, ad astra.
Tux because 'The project is both open source and non-profit in order to inspire as many people as possible, and to envolve relevant partners and their expertise'.
Re: Too many people get the basics wrong...
I'm curious. You wrote a well reasoned piece that sounds very plausible and appears to be written from experience. You are also in a business where effective advertising can make the difference between selling your product and not selling it yet you tell us neither your own name nor that of your 'main app'. Why?
Re: Downvoters are missing two points:
>Swedes can probably do a pretty good side-by-side comparison
I'm afraid it is not quite so simple. Road construction standards and the topography are quite different between the two countries. Roads in Norway frequently follow contours along the edge of a fjord or lake and are just barely the minimum 6m width. Even major roads generally have no hard shoulder in Norway whereas many even quite minor roads in Sweden have a broad hard shoulder which slow traffic can use briefly so that faster traffic can safely overtake. And of course the Swedes have a lot more dual carriageway and motorway than we do. So it would be reasonable to expect that the same distracting behaviour would have more serious consequences in Norway. Head on collisions are relatively common here, especially in winter when the road is even narrower because of snow piled up at the edges.
But still, congratulations to the Swedes for taking a rational attitude to the matter.
Would have used the I'll drink to that icon but it#s much too expensive here.
Re: schweinebraten and russ roulade...nom!
"No serious company will run software which is out of support."
Anyone making such a laughable statement should be willing to put their name to it.
Re: Free stuff
"There are still quite a lot of Windows only tools in the office arena."
And you know the names of some that are relevant to Iceland? Perhaps you could tell us so that we could either tell you how to get around the problem or indeed let us learn of a real reason the stick with Windows.
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