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* Posts by Chemist

1913 posts • joined 24 Mar 2010

Vertu-alised Android revealed at an all-too-real €7,900

Chemist
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Re: <probably mistaken pedant>

"NM = torque, so presumably they mean you can use it as a really short lever?"

It's both torque and energy and it should be Nm BTW

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Chemist
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Re: "can survive a strike from a 110-gram ball bearing"

"There must be something missing in this sentence"

Like what HEIGHT it was dropped from. I pretty certain most things would stand it being dropped 0.01mm

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Tesla vs Media AGAIN as Model S craps out on journo - on the highway

Chemist
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Re: Electric vehicles are a joke until storage density and infrastructure get MUCH denser.

" Gas is easy to transport or make on site (for H)"

This hydrogen, if you make it on site presumably by electrolysis the efficiency is poor. Electrolysis generates a lot of waste heat. If the electricity is generated by coal/gas/oil the overall efficiency is likely to be < 20%.

How are you going to store it in the vehicle ? Either compression or cryogenics requires a large amount of energy and each has it's own problems anyway. The overall efficiency is now ~~ 5%

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Microsoft Surface Pro launch: It's easy to sell out of sod all stock

Chemist
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Re: Nexus 4...

"We all have to work with MS software whether we want to or not"

Only the unlucky ones !

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LibreOffice 4.0 ships with new features, better looks

Chemist
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Re: Gimp has CMYK.

"Gimp has CMYK now"

It certainly has had the ability to generate a range of color separations ( including CMPK) for a while, whether this is sufficient for the OP I don't know as my knowledge in this area is limited.

For info the menu option is Colours - Components - Decompose - Choose 1 of~12 options (GIMP 2.6.11).

I don't actually use GIMP a lot as my main interest is processing RAW digital photo files and there are much better programs in Linux to process in 48-bit etc

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Chemist
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Re: LibreOffice

"Alas my post was taken seriously by some. It was humour."

Sorry if I upset you - it's just one of my things. I don't care what a program looks like as long as it has the performance/stability/etc.

In my case being totally Linux only I use LO as I don't have much choice anyway.

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Chemist
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Re: LibreOffice

"LO should divert all coding efforts from the engine and into the UI"

Oh yes, style over substance every time </sarcasm>

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Microsoft needs to keep visible under waves of Blue

Chemist
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Re: this is not by choice

Searching on-line for usage figures for LO & OO gives widely varying and likely highly inaccurate figures. This to be expected of course. However the more telling statistics are how many articles try to downplay the usage.

One can ask to what purpose. If the usage is minimal it scarcely warrants mention surely. Have all these people nothing better to do than be critical of something they seem to think has very limited distribution ?

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Chemist
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Re: this is not by choice

"used by about 6 people globally..." plus 13000 in Munich.

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Chemist
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Re: @Eadon

"This project got in jeopardy around 2003"

AFAIK the project only started in 2003 and it wasn't until 2006 that implementation started. By 2013 there were ~13000 workstations running a specific Linux variant based on Ubuntu but with a KDE desktop.

I also find it rather telling that MS claims that the move to Linux cost more than staying with MS but has declined to publish the study they did on this.

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Electric cars stall in USA, Australia

Chemist
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Re: utter bollocks

"and it is much cheaper than diesel anyway,"

I doubt that. A quick google got me 15L for £24.99 which is more than the price of diesel in these parts at the pump.

Have you a ref.for this cheap oil ?

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'Depression-era grandma' Apple responds to bolshy investor

Chemist
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Re: Einhorn's Ulterior Motif

"He is bound to find a bunch of share holders which believe his version of reality and vote his way."

That's the way companies work. If other shareholders are stupid enough to not check what he's saying then they deserve all they get. Generally large shareholders are NOT stupid and can employ people to check.

I wasn't thinking specifically of this case when I discussed returning shareholder value but in general it's true with the caveat that the shareholders would have to vote for the dissolution/merger/takeover of the company.

I've no idea of the motives of Einhorn, I'm just taking exception to the idea that shareholders have to accept what THEIR board of directors says. It isn't so. Remember the directors work for the shareholders. If I own part of a company and the directors either make a mess or merely collect a cash pile that they might be using to grow the business it's MY investment that is affected ( and of course the workers)

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Chemist
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Re: Einhorn's Ulterior Motif

""When you buy stock in a company, you must agree with the way the company is managed""

When you own stock you own a share of the company. If you have enough stock or supporters then you are fully entitled to change the way the company is managed. That's why shareholders can vote.

Indeed if a company can't see any future in what it does it's the duty of the directors to return as much value to the shareholders as they can. One of the reasons for taking a company private is to avoid shareholder involvement, although like Dell you might end-up in regretting that.

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Space station 'naut supplies Reg with overhead snap of Vulture Central

Chemist
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@mike2R

London is indeed a great city - but much of what people think of as 'London's' history derives from people from all parts of Britain -it may appear to outsiders that it came from London but on the whole it passed through London.

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Chemist
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"so much of history came from this brightly-lit city."

so much of history came from the country whose capital is this brightly-lit city. - fixed that

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Microsoft 'touches 16k shop workers' to flog Windows 8 hard

Chemist
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Re: Lord of the flies

"Ever seen flies on a touch screen ? I have last summer and it was hilarious - they are happy to open Control Panel for you or whatever ... close random windows ...."

It's just a bug

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Report: Over 1.5 MILLION UK drivers will have hydrogen cars by 2030

Chemist
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Re: doomed

""Steam would of course provide a simple enough alternative - fireless steam""

Note : the fireless steam is generated from methanol + hydrogen peroxide + catalyst. This does not seem a realistic method for transport etc. Local, small scale generation of steam without heat maybe.

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Chemist
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Re: Why not just convert your existing car?

"he amount of current required is significantly reduced to within the scope of a standard car battery and unmodified alternator."

Perpetual motion then ! Should make a fortune !

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Chemist
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Re: doomed

All you need now is a low-cost, low energy way to make methanol & hydrogen peroxide. - oh wait !

Thermodynamics is thermodynamics - there is no way round that. The energy you get out + losses had to come from somewhere.

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HP jumps on Chromebook bandwagon with 14-incher

Chemist
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Re: My Samsung Chromebook turned up last week!

"Have to say its a great bit of kit. Great to use."

Good to hear but so many here would say it's barely usable because it can't run Office etc..

( Please note I wouldn't say that )

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Windows Server 2012 kicks ass: discuss

Chemist
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Re: Madness with Windows supporters

NYSE Trading Platform

"Unparalleled Price-Performance

The Universal Trading Platform for International Markets runs on commodity

Linux hardware and standards-based communication protocols."

http://nysetechnologies.nyx.com/sites/technologies.nyx.com/files/L5756_NYSE%20Tech%20UTP_IM_OST_100105b.pdf

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Chemist
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Re: Madness with Windows supporters

"Unix servers experienced a revenue decline of 14.2% year over year "

Yes but Linux != Unix !

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Chemist
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Re: Madness with Windows supporters

"People better qualified than you are chosing Windows server on a daily basis"

People better than you are chosing Linux servers on a daily basis .... Fixed.

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Chemist
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Re: Madness with Windows supporters

"New York Stock Exchange uses SQL........"

First hit on Google !

How Linux Mastered Wall Street

www.pcworld.com/article/.../how_linux_mastered_wall_street.html

"NYSE Does Linux

The largest exchange, the New York Stock Exchange (NYSE) Euronext, is run on a Linux system that can generate 1,500,000 quotes and process 250,000 orders every second, offering acknowledgments of each transaction within two milliseconds. "

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Netbooks were a GOOD thing and we threw them under a bus

Chemist
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Re: I want a new netbook

I've had a Asus 901 for years and binned the stupid travesty of Linux it came with almost immediately for Kubuntu. It now runs OpenSUSE 11.4/KDE , which installed perfectly from a USB stick and runs everything fine and that includes WiFi, Bluetooth, and 3G dongle.

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Quantum crypto still not proven, claim Cambridge experts

Chemist
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Re: Carver Mead's been saying it for years

"Even if you could fire a "single" photon would it not hit the Aether particles and cause them to propagate as a wave?"

You can 'fire' a single photon.

What Aether particles ? Suggest you need to do some reading around this whole area

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Comp Sci becomes 'fourth science' in English Baccalaureate

Chemist
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Re: A significant difference...

"Between my schooldays in the late seventies ....."

Ditto - only the sixties

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UPnP scan shows 50 million network devices open to packet attack

Chemist
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"Am I right in thinking that unless you specifically need an incoming connection "

I think it is implementation dependent - if your device has an option for uPNP on/off its best off. They often default to on.

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Stanford super runs million-core calculation

Chemist
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Joke

Re: Is it hard to do that?

"Could you not do that just by writing some bad code?"

You'd better put more paper in the printer if you're making a million copies

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Hackers squeeze through DVR hole, break into CCTV cameras

Chemist
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This business about uPNP..

.. has been known about for years. I turned it off on my router when it was new and that was 4-5 years ago

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My top tip for Microsoft: Stop charging for Windows Phone 8

Chemist
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Re: My top tip for Microsoft.

"if you could just grasp the concept that there are hundreds of *billions* of PCs"

So several dozen for each person on the planet then.

hint : population of planet ~7 billion

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Chemist
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Re: "the writing is on the wall for desktop computing."

"no office or other Win application that requires more performance than I have."

I think you mean - that YOU use. There are plenty of applications that can use huge amounts of memory/cpu -the most general obvious being video, esp. rendering or transcoding 1080p/50

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Chemist
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Re: world without MS - open, innovation, creative

"Erm, you mean like Android managing to have more variants of Malware in 3 years than all versions of Windows have in 14 years?"

You really believe that don't you ?

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Chemist
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Re: My top tip for Microsoft.

Re: My top tip for Microsoft.

"n the real world nobody really uses Linux and open source on corporate desktops"

Absolute rubbish - I was in a group of 200 who had high powered Linux workstations years ago( 8+) , academics, CGI groups and engineers all use it. It may well be a small percentage but it's a very high-powered influential percentage. In my own area software tends to be ONLY written for Unix, Linux and maybe Macs

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ITU signs off on H.265 video standard

Chemist
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Re: Damn!

"I wonder how long it will be until hardware-accelerated codecs for this are commonplace?"

FYI

http://en.wikipedia.org/wiki/High_Efficiency_Video_Coding

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The Oric-1 is 30

Chemist
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"

> I'm not sure I'd want to deal with a company whose director, or even a senior staff, have a

> history of bankruptcies, millions of pounds of debts, failed companies, etc"

Like many things it depends on the details, was it a well-thought out scheme that failed due to unexpected circumstances, suprise innovation from a competitor, market downturn etc. Or were the directors out-of -their-depth in some areas, dishonest, over-optimistic, poor managers etc.

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Boeing 787 fleet grounded indefinitely as investigators stumped

Chemist
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"Inert gas extinguishers, or anything else, will not help much in a lithium ion battery fire."

Whilst I agree with this and have on several occasions in my lab career extinguished burning metal & metal hydride fires using special ternary powder extinguishers and whilst noting that these batteries are worst in having their own oxidant the use of inert gas would at least help to control any collateral fires in the vicinity.

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Meet قلب, the programming language that uses Arabic script

Chemist
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Joke

"Some of us old timers had to learn the hex codes for several different processors."

What worries me as I get older is that hex codes (7E JMP on a 6809)are starting to be the only thing I remember !

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Boffins baffled over pulsar with 'split personality'

Chemist
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Re: Obvious innit?

Surely

Yours _infallibly@pontifex

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Chemist
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dash dot dash dash dash

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Panasonic: We'll save Earth by turning CO2 INTO BOOZE

Chemist
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If it is ~ same efficiency as plants..

then it will need a humongous area of land

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Microsoft blasts PC makers: It's YOUR fault Windows 8 crash landed

Chemist
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Re: Let me get this right...

"that you don't have software maintenance if you don't buy the Windows flavour."

Certainly I build all my own desktops/servers and install Linux on them - for years I've had NO maintenance cost other than one flaky HD

Laptops are a more difficult matter - so far I've got by with 1 netbook (Linux from new) and 1 second-hand laptop (donated after a Windows Update disaster). I'm going to have to replace it soon-ish as various non-core bits are failing and the memory is becoming rather tight)

I'm going to have to look around rather carefully

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Hydrogen on demand from silicon nanospheres - just add water

Chemist
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Re: Wow. object with 100x surface area of other object reacts 100x faster on its surface

"But that's one big if."

Absolutely. Si surfaces rapidly coat with SiO2 so I imagine the nanospheres would need to be made out of contact with air. On exposure to water I rather think they would change their shape rapidly and indeed if they didn't much unexposed silicon might be wasted or the reaction rate at least limited.

Overall this is just one scheme amongst others that could be used as a portable source of hydrogen.

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Chemist
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Re: price of caravan fuel cell fuel

The energy content of methanol is ~~6kWh /Kg so that would argue for a rather poor efficiency.

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Chemist
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Re: Just add silicon nano-spheres too - Yeah BUT

"HUGE double mattress slabs of silicon, and have them churn away"

Sorry the reaction with bulk silicon is VERY slow probably because the surface rapidly coats with SiO2

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Chemist
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Re: Wow. object with 100x surface area of other object reacts 100x faster on its surface

"I like the low-tech aspect of cacium carbide."

It's not low-tech, just old-tech - it needs a stonking 2000K arc furnace to make , don't know what the energy efficiency is.

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Chemist
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" Water is a finite resource too"

Not really. Take this reaction 2/3rds of the water comes back from oxidizing the hydrogen in the fuel cell. The remainder is loosely locked-up in silicic acid.

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Chemist
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There are plenty of uses for a 'refillable battery' although a generator is really a better name. Already large units are available for motorhomes and yachts that allow silent power production on a considerable scale for many weeks from cassettes of methanol ( not ideal I admit ). You could use solar or wind but the energy stored in even methanol is significant and allows for heavy usage in darkness.

An example here : http://www.youtube.com/watch?v=1vWvPwiQazI

A bit twee but it gives some of the current possibilities. As far as I can tell the running costs are ~~£2/day for a 600W unit

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Chemist
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Re: Just add silicon nano-spheres too

"bear on making the spheres cheaply"

The silicon is just an energy carrier - you need to put energy in to get silicon from silicon dioxide. Generate the hydrogen and consume it as efficiently as possible and you might get back a modest proportion of the input energy. There's no way round that it's just chemistry and thermodynamics. If you can get really cheap energy it might be useful for certain niche application - basically it allows you to store the equivalent ~45L of hydrogen in 28g of silicon (+water)

Energy costs dominate this with the proviso that making the nano-silicon particles may in fact dominate the process. Material costs are irrelevant as the silicic acid can be converted back to silica if necessary

The minimum energy cost is ~1MJ/mol (=28g) and may be a lot more

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