* Posts by Chemist

2596 posts • joined 24 Mar 2010

NASA: 'Closest thing yet to ANOTHER EARTH' - FOUND

Chemist
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Re: 1400 light years

"If you could do it at a continuous 1 to 2G acceleration, then it'd subjectively be a relatively short trip."

If, as you say, you could develop the propulsion the occupants might well experience a short trip but for the ones here waiting for the information it would still be 2800 years.

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The French want to BAN .doc and .xls files from Le Gouvernement

Chemist
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" but one in particular was the ability to click on a chart, and move intersection lines into positions on the curves."

"The lines were not specifically associated with the chart."

I don't understand what you mean by this. Surely a line not associated with a chart is just a line why would clicking on a chart enable you to move a independent line ?

Just playing around with this a line can be drawn on a chart that seems to be fixed to the chart if it's drawn during the definition of a chart from Insert-Object Chart.

If you define a data set and click the chart icon then an independent line can be drawn later that can be moved around.

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Blessed are the cheesemakers, for they have defined the smidge

Chemist
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"........ consider how to translate 0.15625ml to a dry measure of furikake"

Just use a 0.15625ml jug (brimmed - depending on what sort of meniscus dry furikake has)

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Microsoft: Hey, you. Done patching Windows this month? WRONG

Chemist
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"I have found that my own Linux boxes are not vulnerable,"

Same here and for multiple reasons. Some due to the default settings and some due to my sshd configuration/firewall/router firewall.

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Chemist
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FAIL

"However (seeing as Linux isn't really used on the desktop),"

Linux is really used on the desktop but not generally by casual computer users. A lot of scientists/engineers/academics use it for example. 1.6%, of course, is actually a very good number considering that many people have to get off their ars*s and install it themselves.

In answer to AC earlier (perhaps you could mention it to him !) the graphics performance is often the reason for using desktop Linux. I and many of my colleagues use if for hardware stereo 3D graphics for protein modeling. Rotating a large protein complete with all its bonds smoothly in 3D whilst running further computationally intensive modeling programs is about as demanding as it gets BTW.

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Chemist
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Re: That's NOT why

"What are you talking about? Commercial software sells on its own merits. "

Agreed. For years I've been using seriously expensive protein modeling software that was written for Unix/SGI/Linux. The sort that needed a license server (or worse only had a few copies available via a token system )

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An EPIC picture of Earth, sunny side up, from one million miles out

Chemist
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Re: British Summer Time

"It's way too far out to be the ISS, that orbits at 250 miles. Looks more like a dodgy pixel on the camera's CCD."

Well it might be but as there seems to be quite a few more around the image I'd guess they were stars.

Yep -just altered the curves on the high res-image - space is full of e'm

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Mozilla's ‘Great or Dead’ philosophy may save bloated blimp Firefox

Chemist
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Re: Chrome sleek and fast, Firefox bloated and slow

"Does anyone know of a way to get some of these metrics?"

Is about:memory what you are looking for ?

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Chemist
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"Chrome ...... performs noticeably faster at common tasks, like switching between tabs."

Blimey - you must have quick reaction times ! Even this old dual-core, 2GB with on-board graphics switching tabs is 'blink and you'll miss it ' .

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Five lightweight Linux desktop worlds for extreme open-sourcers

Chemist
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Re: Bad marketing El Reg @Khaptain

"I am thinking about moving over to Linux and I can't say that this article helped me at all."

My advice for what it's worth - get a few Live-CD/pen-drive distro - try them out (without needing to install) to check the hardware and UI. They'll run slowly but that's not the point at this stage.

For example http://software.opensuse.org/132/en and chose "Click here to display alternative versions" to get live-cd of KDE or Gnome versions

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Chemist
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Re: Bad marketing El Reg

"The 2GB is needed to run Firefox. Regardless of desktop/WM/OS..."

That's total borax. Although this laptop has 8GB, my other machines have 2GB and indeed one is a 1.4GHz Celeron with 1GB. All of them run the latest Firefox on top of a full-fat OpenSUSE 13.1/2 KDE desktop. All run Firefox well. Currently this laptop is using 380MB for Firefox with 9 tabs open - the highest I've ever seen is ~800MB.

I can see that you'd need to be anonymous BTW

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Chemist
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Re: Financial models matter

Thanks for that Will. I've been a long term user & advocat for Suse/OpenSUSE since V5. Excellent trouble-free distros

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Chemist
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Re: I have a beefy PC, but still run ye olde GNOME 2

"I could never get into KDE myself and I never understood why Linux couldn't settle on one desktop"

I like KDE - if there was just one Linux desktop I'd want it to be KDE . So I'm happy that there are a number of both desktops and distro. esp as changing desktops is easy.

If you're arguing there should be an 'easy' distro with one well-supported desktop I might agree but multiple desktops and distros are one of the main strengths of GNU/Linux and I wouldn't want that to change at all. If people want to develop a distro then so be it.

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Call that a mugshot? Aussie model/fugitive asks rozzers for more flattering pic

Chemist
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Re: I am more concerned... @Chemist

"but if it was just the picture and manual appraisal, they would probably be less strict about the expression, background, glasses etc"

This not the first time ( or indeed 2nd or 3rd) I've taken our passport photos - most of the requirements as to quality/background etc were in place long before biometric passports but at least the photos in the passports were recognisable.

You're quite correct my wife's passport is due for renewal soon

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Chemist
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Re: I am more concerned... @Chemist

"And again, it's not about people looking at the photo,"

Oh so you never go through borders where they don't have this equipment then ?

And BTW my wife's passport isn't biometric and the same poor quality applies.

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Chemist
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Re: I am more concerned...

"Does it matter??? Why be so vain about a passport photo???"

It's not a question of vanity - it's not easy in any kind of poor light or bright light to actually see the photo well enough to identify the individual - kind of the purpose of a passport. UK passport applications give all sorts of instructions about the quality, size & background of image required and then turn out an inferior product. (Unless all border officials have their eyesight modified !)

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Chemist
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Re: I am more concerned...

I spent quite a lot of time taking our passport photos and the resultant prints were nigh perfect - then the passports came back with absolutely awful reproductions - smaller and very low contrast. Wish I'd just used a machine

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DOUGHNUT (donut?) and whale FOUND ON PLUTO

Chemist
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Re: Excellent work

"Cannot wait to see the results of the flyby"

I presume you'd also like to see the Grebulon's ship

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Evil NSA runs on saintly Linux, Apache, MySQL

Chemist
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Joke

Re: LAMP

Lost All Meaningful Privacy ?

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'The server broke and so did my back on the flight to fix it'

Chemist
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Re: graeme@the-leggetts.org.uk

"Plus also it takes a fairly massive dose of it to do any sort of damage,"

~20 tablets over a few hours or less will do it esp. with a lower weight person or one with an already damaged liver. As the original article mentioned "a huge handful of ibuprofen and acetaminophen” it also appears to depend on the size of hand. I'm sure, in fact, that it was a colourful phrase rather than a measure but with some common drugs it really is too easy sometimes to treat them as relatively harmless

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Chemist
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Re: graeme@the-leggetts.org.uk

"Paracetamol is only intended for short term pain relief. It says so on very packet I've seen"

No it's often used for chronic pain like that of osteoarthritis. OTC bottles of all sorts of drugs are required to tell users that they should only use them for short period.

Paracetamol is relatively safe at normal usage levels but recent studies have suggested that chronic use at higher than recommended levels whilst not acutely toxic can in time lead to liver damage.

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Chemist
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so he scoffed “a huge handful of ibuprofen and acetaminophen”

Just got to point out that an overdose of acetaminophen ( paracetamol) is VERY dangerous and will often prove fatal. I hope everyone knows this but ...

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ONE MILLION new lines of code hit Linux Kernel

Chemist
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Re: Yes but

"t'was a time when 512 bytes was over-indulgent luxury."

Certainly I started on 256 bytes programmed via a hex keypad and not on a microcontroller either (SC/MP on Science of Cambridge MK14)

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Chemist
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"So is this driver code hard-baked into the kernel? "

No. It's usually all loadable modules - all of which you may have on your drive for convenience or not

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Gates: Renewable energy can't do the job. Gov should switch green subsidies into R&D

Chemist
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Re: Current Renewables are a Band-Aid

"That's also some claim when Germany is in such tight electrical straits they've had to buy a sizable chunk of their electricity from France lately."

I've mentioned here before that a comprehensive analysis of Germany's electricity stats (2014) can be found at :

http://www.ise.fraunhofer.de/en/downloads-englisch/pdf-files-englisch/data-nivc-/electricity-production-from-solar-and-wind-in-germany-2014.pdf

Page 6 ;- first 11 months of 2014 total generated electricity ~470 TWh

46% coal, 9% wind, 7% solar,

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This whopping 16-bit computer processor is being built by hand, transistor by transistor

Chemist
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Re: Completely and utterly bonkers

"None of which are actually functioning today"

AFAIK the replica of the Manchester 'Baby' is around and ran in 1998. I was taught physics by a chapvwho worked on the original and had a photo of himself, stripped to the waist, working in basement surrounded by racking

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Cambridge’s HPC-as-a-service for boffins, big and small

Chemist
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" "throwing away" data pre-determined as "uninteresting" for a long while yet. Probably forever"

Probably !. It'd be nice to know how much this huge data stream has already been processed (FPGAs, heuristics etc) at the experiment . Anyone know ?

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Open-source Linux doesn't pay, said no one ever at Red Hat

Chemist
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Re: Even if it doesn't pay.

"As I see it, the good of systemd is that I can reboot in a small number of seconds, and the bad is that I seem to have to do it at least ten times as often, for something like a wash"

Using OpenSUSE I reboot hardly ever and only switch off when I'm traveling. Updates arrive regularly and systemd seems to restart any daemons that have been updated.

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Graphene sheaths could boost processor signal speeds by 30 per cent

Chemist
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Re: Contradiction?

"Moving on, I'm sure you can improve on my answer, if you care to. If the structural strength of graphene is currently realisable (no pun intended), why not ditch the copper entirely and go with a graphene conductor?"

The simple answer is that I don't know

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Chemist
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Re: Contradiction?

"Perhaps because graphene is one atom thick and has no structural strength?"

Perhaps you'd like to reconsider that rash statement. Just Google it

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Chemist
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Re: Contradiction? @ chemist

"f you consider the graphene not as a sheet of carbon, but two layers of hydrogen stabilised by a lattice of carbon + electron soup ( extremely simplified, of course)."

"To migrate to the silicon any copper atom would have to react with the H of the graphene first.."

Sorry I should have noticed this sooner but I've been busy today. I'm afraid you are under a misapprehension - graphene doesn't have any hydrogen attached to it - it's pure carbon sp2 hybridized. so planar like benzene but with all bonds carbon-carbon

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Chemist
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Re: Contradiction? @ chemist

"So this is Graphene Oxide ..."

However graphene oxide != graphene

In any case the water permeability seems to be along the axis of pairs o sheets

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Chemist
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Re: Contradiction? @ chemist

"It would work that way if you consider the graphene not as a sheet of carbon, but two layers of hydrogen stabilised by a lattice of carbon + electron soup ( extremely simplified, of course)."

Not sure the point you are making - It's known that a monolayer of graphene is an impermeable barrier under normal conditions ( I have a feeling that protons can tunnel through ) So as I stated copper is not going to be able to diffuse into the silicon

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Chemist
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Re: Contradiction?

"and an insulator"

AFAIK the nitride layer there as an insulator and to stop the copper migrating into the silicon and affecting its performance - graphene will presumably do the same (and conduct electrons along the sheet"

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Chancellor Merkel 'was patient zero' in German govt network hack

Chemist
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Re: Hooooooooooowl...

"You have to have good math capability and know your subject but computers are only needed for research"

Not my area exactly but ...You know, presumably, that solutions of the wave equation for anything other than the hydrogen molecule that approximations methods have to be used - that means computers, for anything rather larger , it means BIG computers

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Chemist
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Re: Hooooooooooowl...

"Did that even exist when she graduated in the DDR? My doubts cannot be allayed..."

Shows more ignorance - her doctorate was in mid-80s - quantum chemistry had been around since ~1920s.

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Microsoft to Linux users: Explain yourself

Chemist
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Re: A bit late, Microsoft

"it's silly to take an attitude of refusing to look at new stuff because you're familiar with the old."

Yet time & time again we're told here that there is no point in companies moving to Linux/LibreOffice or whatever due to the users inability to adapt/learn ( even though the same users seem to have moved to Android/iPhone etc without any forcing)

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A 16 Petaflop Cray: The key to fantastic summer barbecues

Chemist
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Re: Can anyone clarify?

"After all, if it is raining where you are, it is certainly raining; if not, not. It is a binary choice, no probabilities needed."

If it's raining where you are you don't need a weather forecast !!!

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Chemist
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Re: 2 million lines of FORTRAN code

"but I found that FORTRAN code actually ran faster than it's similarly written C equivalent."

I've mostly written my scientific software in C but one of the major points in favour of Fortran seems to be the masses of thoroughly debugged routines/libraries (including source) available for a vast range of topics

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MONSTER GALAXY spotted hiding behind IMMENSE BLACK HOLE

Chemist
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"I would guess that any temporal effect there might be on a photon when it zips past a 100,000ly galaxy..."

AFAIK photons don't experience time. It's all now for photons - emitted and absorbed at the same instant even if billions of light years separate emitter and absorber. Google it. Strange place this universe.

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What's broken in this week's build of Windows 10? Installing it, for one

Chemist
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Re: Release ring or Strange Attractor?

"swirl non-deterministically "

Whilst I agree with your sentiment AFAIK chaos (theory) is deterministic in that you can write the equations, however the system that the equations describe is so sensitive to initial conditions that it doesn't matter and appears to be random or pseudo-random very quickly

See animation : http://en.wikipedia.org/wiki/Chaos_theory

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Free Windows 10 upgrades from Microsoft will FLATTEN PC sales

Chemist
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Re: @Steve Davies 3 - Correct for me.

"Microsoft is not worried by users switching to *nix/*BSD,they solved this a long time ago with UEFI Secureboot. "

Eh? I'm Linux to the the core but just telling lies about MS doesn't advance your argument one little bit

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Blackhat hack trick wallops popular routers

Chemist
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Re: Checking?

"it shows the DNS addresses at the bottom."

In many cases it will just point to the router . I usually embed my normal DNS server addresses in the nm settings for my access point.

At the moment I'm still looking for a reasonably simple explanation of how this exploit works and indeed how it is triggered.

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EXT4 filesystem can EAT ALL YOUR DATA

Chemist
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"Often when I try to use multi-threaded code that has high memory usage the entire Linux OS will crash. "

Strange, even 10+ years ago using a dual xeon Dell workstation with the quite large memory of 2GB ( for the time) we ran multithreaded protein modelling software under RedHat for DAYS at ~100% CPU without any probs.

And now my 8GB 4(8) core i7 laptop (OpenSUSE13.1) running multithreaded software can render/convert video running at ~90% CPU without issue.

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You've come a long way, Inkscape: Open-source Illustrator sneaks up

Chemist
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Re: open source video editor

"What about Kdenlive (KDE non-linear video editor)?"

I've used it for years, since ~2012 I've used it for 1080/50p video and i find it excellent (esp. for free) - I've not used anything except Linux for years so I can't comment on Windows/Mac as hardware is now so much faster tthan when I used editors on Windows for SD video. I found kdenlive used to crash before ~2012 but that is now a thing of the past. I think it's one of the best for Linux and easier than Cinelerra to pickup.

I use inkscape for laying out PCB (all manually) but I find its line width and spacing accuracy first rate certainly SOIC, and even TQFP are possible just using laser toner to copper transfers.

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It’s Adobe’s Creative Cloud TITSUP birthday. Ease the pain with its RGB-wrangling rivals

Chemist
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Re: Darktable

"How reliable is it nowadays? "

I'm using Darktable 1.4.2 under OpeSUSE 13.1/13.2 and I've never had any problem with crashing and I processes a lot of my RAWs using it (all Canon 550D/6D). I've been using it for > 1year now.

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Chemist
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Re: most changes you make will be irreversible/lack of non destructive editing,

Thanks for the clarification - I was misled by "most changes you make will be irreversible"

as clearly they are not. The process of altering a step out of a pipeline of changes that are eventually rendered is in fact what I'm used to with Darktable.

As I mention above I don't us Gimp much but have been grateful for the undo history on many occasions - although in any case, of course, I'd never overwrite an original image

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Chemist
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most changes you make will be irreversible/lack of non destructive editing,

Not sure what is meant by this - Gimp lets you role back for a considerable number of changes (Edit - Undo History ) That said I don't use it much except for the odd quick job.

That's 'cos I use Darktable which is awesome as you say and covers virtually all my photo needs. Especially good is its profiles for various DSLR cameras for RAW processing.

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