* Posts by Chemist

2442 posts • joined 24 Mar 2010

New Horizons: Pluto? Been there, done that – now for something 6.4 billion km away

Chemist
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Can I just have clarification...

about "maximum velocity of a sheep in a vacuum"

I'd assume that given enough energy the speed would be close to lightspeed. Now I do know (living surrounded by them ) that the average sheep is very unlikely to generate that amount of energy on it's own ( for a 40kg sheep at 99% lightspeed I estimate ~2.2E19 J)

Any farmers or relativists know different ?

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Oh dear, Microsoft: UK.gov signs deal with LibreOffice

Chemist
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Re: Hope they enjoy crashing and weird glitches

"Calc crashes less than Openoffice.org Calc, but is still pretty crappy."

I too use Calc for my finances ( for 8+ years OO & LO ) and far more so for scientific use. I can't recall it ever crashing !

What OS are you using ?

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UK drivers left idling as Tesla rolls out Autopilot in US

Chemist
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According to the BBC

"It should not hit pedestrians, hopefully," he told the media. "It should handle them well.""

Well he sounds so confident

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Weight, what? The perfect kilogram is nearly in Planck's grasp

Chemist
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Re: What does this mean for the "Olympic Swimming Pool/Double Decker bus" standards?

"What does this mean for the "Olympic Swimming Pool/"

As the pool is filled with essentially water it could be defined in moles

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How much do UK cops pay for Microsoft licences? £30 a head or £137? Both

Chemist
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Re: This has been going on for years

"for you as an individual, yes"

No, there are several retailers that will supply without OS, charging extra for Windows, in UK. I build my own desktops but I bought my most recent laptop (i7,8GB ) without.

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TRANSISTOR-GATE-GATE: Apple admits some iPhone 6Ses crappier than others

Chemist
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Headmaster

Re: Biased and a little bit clueless

"/pendant"

Unless you hang around a lot I think /pedant is what you meant

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Forget Ben Affleck – US, Euro boffins to SMASH spaceship into asteroid

Chemist
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Re: 5 years?!!

"5 years?!! "

Remember all the committee time to debate the styling, logos, colour schemes. Then building mock-ups, rendering obligatory animation sequences, and other press-release related activites. Then the panic about the funding shortfall due to most of the budget being spent on the aforementioned early stages requiring redesign, cutbacks on features, styling and functions..................

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THIS is MASSIVE! Less-Masslessness neutrino boffins bag Physics Nobel

Chemist
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Re: That detector . . .

". . . do you think it might be used to find the conscience of Tony Blair next?, because that's REALLY small."

Why the joke icon ?

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GCHQ's SMURF ARMY can hack smartphones, says Snowden. Again.

Chemist
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Re: @fLaMePrOoF: In the spirit of 'evidence or it didn't happen'

"It would be interesting to repeat the experiment,"

Wonder how they've managed to cope with all the trippers on the river with mere cameras ?

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Massive global cooling process discovered as Paris climate deal looms

Chemist
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Re: So-

"Chaotic system can operate within a bounded range"

Indeed a dripping tap is chaotic

http://www.nature.com/news/2000/001222/full/news001228-2.html

We should really use the phrase 'deterministic chaos' in these cases where, usually, the equations describing the phenomenon can be written but where the extreme sensitivity to initial conditions means that predictions are difficult/impossible.

Best not to use chaos when random is meant.

https://en.wikipedia.org/wiki/Chaos_theory

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Chemist
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Re: VOCs

"it's the high VOC stuff that turns yellow, the water based low VOC stuff is much whiter and stays that way. "

In my experience it's the low VOC but non-water based gloss that gives a good finish but yellows rapidly. I'd guess that to make it easy to apply the amount of VOC removed has been replaced with even more of the (necessary) binder which is what yellows.

UV probably works by getting the TiO2 pigment to oxidize the yellowing binder. Water-based, having no need for a large amount of binder stay whiter longer at the expense of poor finish

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Lies from VW: 'Our staff acted criminally but board didn't know'

Chemist
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Re: Doesn't pass the smell test

Hopefully for the last time :

Diesel MoT emission test .- only particulates are checked

http://www.ukmot.com/manual/7.4/Exhaust-Emissions-Compression-Ignition

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Herbie goes to a hackathon: Mueller promises cheatware fix

Chemist
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"but as we've learned the NOx regulations were too strict and not achievable."

Not to minimise this but Eur 6 does seem to be achievable BUT the standard is for a certain mix of simulated driving. As I've mentioned before this will never represent all the possible conditions of actual use.

In any case the actual risk to health is a function of the concentration.time product which can't be garnered from tailpipe emissions directly as it depends on so many factors. ( traffic density & speed , wind & rain, mix of HGVs vs vans vs cars, background levels of NOx from other sources [heating, industry] )

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Chemist
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"If a UK VW Passat (as an example) passed its MoT test emissions levels last year, "

What MoT emission test .? AFAIK only particulates are checked

http://www.ukmot.com/manual/7.4/Exhaust-Emissions-Compression-Ignition

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Sky 'fesses up to broken fibre cables as cause of outage woes

Chemist
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"Northern England suffering broadband outage since Monday"

I doubt if the areas listed constitute even 1% of "Northern England"

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Audi, Seat, Skoda admit they've been fiddling car pollution tests as well

Chemist
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Re: So how would this work in Europe?

" (monoxide? dioxide? can't recall)"

Monoxide, the seriously toxic one

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Is Windows 10 slurping too much data? No, says Microsoft. Nuh-uh. Nope

Chemist
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Re: Mint does not demand sys admin skills

"'ve had lying around for years with the express intention of installing some flavor of Linux, not knowing which one to try. I regularly try out Ubuntu and some others, but they all require that you know Linux to use them (aka mounting hard disks, etc). Nuisance."

Just try out a few live-CDs to see what you like - no need to worry about your HD at this point, but allow for it being quite a lot slower. Once you find something you like then install it - usually just a click on OpenSUSE for example, answer a few questions about location/language and a default install will usually be OK without worrying about mounting or very much else.

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WATER SURPRISE: Liquid found on Mars, says NASA

Chemist
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Re: Tasty Morsel

"Sounds like a job for Dechlorosoma sp."

Nice spot !

However there's no indication that this organism could cope with the concentration of such salts ( assumed to be high due to the freezing point depression), either from the toxic effects or just the osmotic effect

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Chemist
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Re: Tasty Morsel

"When a hardy Earth bacterium gets to that wet soil"

It'll have to be hard with soil containing chlorates and perchlorate in high-ish concentration

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NOxious VW emissions scandal: Car maker warned of cheatware YEARS AGO – reports

Chemist
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Re: The VW Diesels pass the emissions test

"Agreed. They passed the tests. That much is fact.

Also a fact, they don't emit levels of NOx when driven that match the tests."

The test value can only be a marker of the possible emissions in real driving conditions allowing (if no cheating) some comparison of make/model and some rough prediction of likely effects on short-term air pollution. Given how fuel consumption varies over a large range with such variables as length of journey, stop start driving, high or moderate steady speeds and so on how could it really be anything else.

The 'easy' alternative would be to issue the worst case measurement for any model and that wouldn't reflect real-life use either.

After all take Euro6 - the test value is 80 milligrams of nox /km for cars whereas the environmental limits of nox are concentration measurements so are not directly correlatable - put another way it's some function of other sources of nox + vehicle density & usage pattern ( & wind speed/direction & rain ) for any location

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Chemist
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Re: Today VW ...

"run out of urea"

Just to put it in context many (all ?) urea injection systems have a limit to the number of engine starts that can happen after the urea runs out.

For example : "If the tank reaches one gallon, the car notifies the driver. It does so again with only 20 starts remaining. To reset the system, at least two gallons of AdBlue--or four half-gallon bottles, at $7.75 each--must be added. Roadside assistance plans cover AdBlue, however."

http://www.businessinsider.com/adding-urea-to-clean-diesel-cars-can-i-just-pee-in-the-tank-2011-5?IR=T

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Spirit of the Ghost: Taking a Rolls-Royce Wraith around France

Chemist
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Re: Satnav

"And a Velo Thruxton."

Still miss mine even after all these years - sold it for £350 - sigh

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VW’s case of NOxious emissions: a tale of SMOKE and MIRRORS?

Chemist
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Re: Alltogether Now

"Urea injection, which only really works during emissions tests too."

Would you like to ref. that. because AFAIK it's simply not true.

Petrol engines also produce less nox than diesel but still a moderate amount.

In my experience diesels use considerably less fuel ( by volume) than petrol engines in similar vehicles partly due to the increased energy content of diesel and partly due to the better thermodynamic efficiency. Indeed large ship diesels are the most efficient internal combustion engines that are available.

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Chemist
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Re: Alltogether Now

"Nitrogen oxides are produced in combustion processes, partly from nitrogen compounds in the fuel, but mostly by direct combination of atmospheric oxygen and nitrogen in flames. Nitrogen oxides are produced naturally by lightning, and also, to a small extent, by microbial processes in soils.

"

http://www.apis.ac.uk/overview/pollutants/overview_NOx.htm

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NOxious Volkswagen diesel emissions scandal: Chief falls on sword

Chemist
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"For example, apart from he MOT test which is just while idling I believe"

AFAIK diesel smoke tests are carried out at full 'throttle'

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NASA rover coders at Intel's Wind River biz axed – sources

Chemist
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Re: Topical

"AFAIK, Canon DSLR camera software is built on VxWorks."

Not since ~2007, it's now DRYOS. https://en.wikipedia.org/wiki/DRYOS.

DRYOS aims to be compatible with µITRON 4.0 and with POSIX.

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11 MILLION VW cars used Dieselgate cheatware – what the clutch, Volkswagen?

Chemist
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Re: Where's the red line?

"The other problem here is that too much credence is applied to the test results."

Indeed. In fact it will be very difficult to have a test that accurately reflects 'real-world' usage as that varies so much.

The extremes might be the city dweller who mostly does short trips in busy conditions with lots of stop/start/idling/acc.

My car might be the other extreme - almost no short journeys, live in the country, travel mostly fast A-roads and motorways at quiet times (overnight), little acc.

I suggest no testing regime will adequately reflect that and that's without considering driving 'style'

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Microsoft Office 2016 for Windows: The spirit of Clippy lives on

Chemist
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Re: Not available

" It takes 23 seconds on average for Writer to start on my desktop machine"

Well as I mentioned below on this laptop,OpenSUSE 13.1, LO 4.1.6.2 500GB HD i7 it take (at the most) 2 secs from clicking the icon to Writer open with a cursor. .

In fact it takes 2 secs to load Calc and my finance spreadsheet and that's via WiFi from my fileserver

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Chemist
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Re: ODF?

"Unfortunately, the use of ODF for engaging with HMG is bobbins. All of my customers require files sent in .doc/.xls format for tender responses or any other formal engagements."

Glad you joined today to let us know about that. /cynical-moi ?

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Chemist
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Re: Not available

" in the shops and then the bargain bin before Writer has even opened."

Congratulations on your phenomenal productivity - you put us all to shame !

It takes me 2 seconds to have Writer ready so you obviously pack a lot in a day. ( Mind I'm running it on Linux )

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The UK IS better than Europe, FACT! (at implementing cybersecurity measures)

Chemist
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Re: "All Europe"...

"Last time I checked, the continent still extends past Moscow, and well past Istanbul."

Not quite that simple. Some countries are 'transcontinental' like the Russian Fed. & Turkey. The demarcation line for Turkey for example is the Bosporus and Dardanelles. So Istanbul is in Europe but most of Turkey is in Asia.

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CHEAT! Volkswagen chief 'deeply sorry' over diesel emission test dodge

Chemist
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Re: Oh dear, VW got caught.

"don't do it when revved while stationary in a test station"

They don't need to use much fuel to rev to max when they're not under load. The situation is quite different if you accelerate hard on the open road esp. from low revs.

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Indianapolis man paints his ball every day – for FORTY YEARS

Chemist
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Re: I'll raise a glass to eccentricity

@Michael H.F. Wilkinson

I seem to remember there was a publication "Journal of Irreproducible Results" where the title font tailed off into a wastebin. You seem to be the sort of chap that might remember it.

This ball wouldn't qualify, of course, as no-one is likely to try to reproduce it ! It also gives a whole new meaning to paint-balling of course.

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Microsoft has developed its own Linux. Repeat. Microsoft has developed its own Linux

Chemist
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Re: Finally hired someone who knows good software

" the Windows network stack significantly outperforms off the shelf Linux "

Ahahah !

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Chemist
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Re: I for one welcome our new Redmond overlords...

"Perhaps looking at things 'the Redmond way' could help a few of these issues."

I really don't think so as they really don't exist !

" user since the mid 90s"

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Let's NUKE MARS to make it more like home says Elon Musk

Chemist
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Re: Greenhouse gas

"Plants don't. They need CO2 and water (plus the minerals for growing). Plants will PRODUCE oxygen."

Plants do need oxygen - it's just that in sunlight and CO2 they produce more oxygen than they need. When it's dark they are a net consumer of oxygen. Plants do need oxygen to survive.

http://scienceline.ucsb.edu/getkey.php?key=760

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Chemist
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Re: Carbon Dioxide

"'ve seen something, somewhere, about how to solve that part...

... Oh, I remember, they call them "plants"..."

Well oddly enough I'm a physical scientist and I've come across them - well at least on Earth where they have a reasonable supply of carbon dioxide and oxygen.

Problem on Mars is the high percentage of carbon dioxide still represents a pitifully small amount due to the very low atmospheric pressure and there's very little oxygen which plants need as well. Now I'm not a botanist so I can't tell you if current plants will grow under such conditions but I'd bet it's not too likely.

Oh I wonder who might know ? Maybe NASA

http://www.nasa.gov/centers/goddard/news/topstory/2005/mars_plants.html

"The plants would probably be housed in a greenhouse on a Martian base, because no known forms of life can survive direct exposure to the Martian surface, with its extremely cold, thin air and sterilizing radiation. Even then, conditions in a Martian greenhouse would be beyond what ordinary plants could stand. During the day, the plants would have to endure high levels of solar ultraviolet radiation, because the thin Martian atmosphere has no ozone to block it like the Earth's atmosphere does. At night, temperatures would drop well below freezing. Also, the Martian soil is poor in the mineral nutrients necessary for plants to thrive."

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Chemist
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Re: Greenhouse gas

"you need more CO2"

It's already got 95%+ how are you going to keep anymore there !! Will existing plants grow in 95%+ CO2 ? They also need oxygen

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Chemist
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Re: Greenhouse gas

"The polar ice caps contain lots of frozen carbon dioxide, that is why."

So ? The last thing the Martian atmosphere needs is more carbon dioxide as it's already >95% such

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Chemist
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"would likely be a planet with even less water"

The other 'small' problem is the almost total lack of oxygen and the very large amount (>95%) of carbon dioxide in the atmosphere already.

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Intel's 6th gen processors rock – but won't revive PC markets

Chemist
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Re: Too many processors will confuse the market

"Offering just the fastest processor and the lowest power processor in each i3,i5,i7 sector is all we need."

But as you point out these are just selected bins so what would they do with the rest ?

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Half the Fanbois in your office are unpatched ATTACK VECTORS

Chemist
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Re: In other news

"At El Reg the glass is ALWAYS half empty."

And what's left in it is vitriol !

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Don't want to upgrade to Windows 10? You'll download it WHETHER YOU LIKE IT OR NOT

Chemist
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Re: I bought windows 7 retail

"Seeing as competing Open Source OS distributions generally have far more known vulnerabilities that on average take longer to patch (more days at risk) than with Windows "

You must have been listening to that AC chap - now what was his name ?

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Chemist
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Re: Don't ya just hate it when...

"'ve hated Linux for as long as I can remember."

At the risk of opening a very large can of very spiky worms - why ? It's an OS - it has faults but if it can enable you to do all you want what's the problem ? If it can't don't change.

For me the advantages massively outweight any disadvantages -in fact I can't think of any disadvantages for me

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Chemist
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Re: FSF recommended distros

"The URL you've given results in a 404 error. Please try again. Thanks."

Works for me ~0700 BST

On the other hand it's a very odd, limited list

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Batteries on wheels are about to reshape our cities and lives

Chemist
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Re: Batteries?

"Longer journeys might need to be in some kind of relay where you swap taxis."

Ah, the return of the coaching inn

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Chemist
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"Already, you can buy a Ford that parallel parks"

Well we've owned two by VW for 6/3 years that will do auto-parking. No doubt other manufacturers vehicles are available.

Never used the auto-parking though !

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Ubuntu Wily gaggle builds 15.10 beta beachhead

Chemist
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Re: Fool me once...

"Fool me once... "

As usual posting as A/C ( without any reason) tends to remove any serious credibility from your post.

In my experience KDE uses more resources than other Linux desktops but it's still quick even on modest hardware unless all the (large number) of mostly trivial effects are enabled.

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Microsoft's 'successful' Nokia slurp kills off Lumia photo apps

Chemist
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"Because I will happily lay down real money that at least 80% of those self-proclaimed penguinistas are using Windows 8.n and have never owned a linux box in their lives. It's pretty easy to spot them if you've been using a linux distro since 1998 or before."

What ?

(Linux since the mid-90s, exclusively since ~2007)

Posted using Firefox 40.0.3, OpenSUSE 13.1

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