Tuesday, 30 September 2008

A bit of music

I'm too knackered to post about Phoenix so here's Ian Dury:

There ain't half been some clever bastards


Billericay Dickie is blow the belt.
Grow into these trousers... >>

Monday, 29 September 2008

Phoenix - These Mars landers just keep givin'

I have just learned that Phoenix has positively identified carbonates on Mars. Crucially, calcium carbonate, that's like chalk and limestone and wow! To me it implies standing water. More later...

Colour perception

The Pooflinger has a great challenge for your colour/hue discrimination. Go visit and take the FM 100 Hue Test, arrange the coloured squares into smooth gradients from one side to the other. Low scores are good, zero is perfect.
I tried this on my LCD monitor at work (err, it was at lunchtime OK) and got:
  • Your score: 4
  • Gender: Male
  • Age range: 50-59
  • Best score for your gender and age range: 0
  • Highest score for your gender and age range: 1429
My problems were in a tight band in the greeny-blues.
Grow into these trousers... >>

Saturday, 27 September 2008

The Amazing Colour-changing Card Trick

Prof Richard Wiseman (see homepage) is a Hertfordshire Uni-based psychologist and well known in the UK media. A few years back he ran a project to find the world's funniest joke, so check that out (see below the belt for my fav).

More recently he has posted some videos including The Amazing Colour-changing Card Trick which, given it's YouTube popularity, you may have seen before. If not :


Find out more at Quirkology.
Grow into these trousers... >>

Friday, 26 September 2008

Which Discworld Character Are You?


Are you a Terry Pratchett fan? Take this short quiz to see which Discworld character is you.

I'm quite proud of my result, it's just who I'd like to be.

See below the belt...
Grow into these trousers... >>

Thursday, 25 September 2008

The answer to yesterday's connundrum

Pull up your trousers.

The answer is (ta^da)
The planet Saturn.


Universe today have the lowdown, but to me...

It's a map of radio emissions from Saturn, the Cassini mission has been gathering this data for ages. The radio singnals are generated by electrons spiraling around in Saturn's magnetic field which the craft then listens to.

See it here as a 3D space projection. Then listen to the audio again, just like you would on your radio set at home; kinda.

Now what was this thing about synesthesia?

Syed Mustafa Zaidi convicted

Pull up your trousers.

Zaidi was yeterday convicted of child cruelty and given a 26 week prison sentence suspended for a year. From The Grauniad:
The 14-year-old, who was 13 at the time, told the jury that neither he nor the other boy wanted to injure themselves. He said Zaidi was insistent with the older boy, "pulling him and pushing him, 'keep doing it', telling people 'this is a sad moment and look, he's not doing it'.

"He goes, 'I don't want to do it, I don't want to do it'. He kept pressuring him, make him do the knife thing, pulling him, trying to get his T-shirt off, pulling and pushing him. He was saying, 'just do it, just do it'." He said the 15-year-old "swung it once or twice and said 'I don't want to do it any more'." The older boy was then pulled away by another man.

After the ceremony, the boys went home to their mother, who noticed several deep wounds on their backs and multiple slash wounds. She took them to Manchester Royal infirmary and the matter was reported to the police.
Thankfully there were some adults around with enough common sense to stop this idiocy.

Wednesday, 24 September 2008

A demonstration of entropy

Via Cosmic Variance, the Domino Effect. This is jaw drop good.

Where come these sounds?

Listen to or download this and tell me what it's from. If you guess Hawkwind or the Twilight Zone you will be wrong.

Answer tomorrow.

Tuesday, 23 September 2008

George Hrab gets better

I just had my weekly listen to George Hrab's podcast, and it's so 'wow' good. Listen/download the episode from here.

If you like comedy which goes WAHH! and EUGH! and COooOL! and is totally reality based, check out geologicpodcast.com.

Monday, 22 September 2008

I'm in a musical mood

So here's the Grateful Dead. Love this video!

A Touch of Grey[sic, UK variant] see Wikipedia.


"Ah well a touch of grey,
Kinda suits you anyway,
This was all I had to say but
It's all right."

Sometimes the oldies are the goodies

Kinks again!

The Kinks - Sunny Afternoon

Sunday, 21 September 2008

Just for a laugh - Fork Handles

The Two Ronnies at their best:

LHC magnet failure

John Conway at Cosmic Variance has a post which I thought corrected my misunderstanding of 'quench'.
This was apparently due to a “quench” in which the magnet goes rapidly from the superconducting to the normal conducting state, which then means that the tremendous electric current in the magnet suddenly starts heating it up, causing huge internal mechanical stresses.
But on reading further I find my initial guess may be on the right lines after all:
While a beam of particles by itself creates very little heat, beam particles straying from the core of the beam will heat up surrounding material. It takes just a small number of beam particles hitting a magnet in one spot to raise the magnet’s temperature above a critical point, causing it to suddenly change from superconducting to “normal” conducting. This change, called a quench, releases the stored energy of the magnet and its neighbors; it can heat a small part of the magnet from -271 to 700°C (-456 to 1300°F) in less than one second.
But yesterday's press release from CERN definitely says there was no beam circulating.
Geneva, 20 September 2008. During commissioning (without beam) of the final LHC sector (sector 34) at high current for operation at 5 TeV, an incident occurred at mid-day on Friday 19 September resulting in a large helium leak into the tunnel. (emphasis mine)
I'm still confused!

Saturday, 20 September 2008

A setback for the LHC

After it's much applauded launch the LHC has hit a glitch and been shut down. A CERN press release today said:
Preliminary investigations indicate that the most likely cause of the problem was a faulty electrical connection between two magnets, which probably melted at high current leading to mechanical failure...

A full investigation is underway, but it is already clear that the sector will have to be warmed up for repairs to take place. This implies a minimum of two months down time for LHC operation. For the same fault, not uncommon in a normally conducting machine, the repair time would be a matter of days.
This doesn't seem to be a major or unexpected setback. As they say, if this were at normal temperatures the repair would take only a few days, but because of the extreme cold needed for the superconducting magnets the cycle of warming things up, making the repair and re-cooling the system could take weeks.

The main loss is time, sadly, and a few tons of liquid helium*.
-------------
UPDATE:
The BBC calls the incident 'a quench' which to me implies that the particle beam has hit the wall of the tube. However the CERN report above says there was no beam circulating at the time. Hmmm, I'm waiting to find out.
-------------
* Listen here for a 7min podcast on the discovery, uses and rarity of helium on Earth. From Chemistry in it's Element.

Passing this along

The Center for Inquiry.


Check out the podcast too, Point of Inquiry.

(via PZ Myers)

A Brief History of Disbelief

Jonathan Miller examines the roots of his own disbelief and the history of atheism.

The quote from Epicurus is a remarkable coincidence!

Thanks to Online Documentaries 4 U, I've wanted to see this again for ages.

Part 1 - Shadows of Doubt

Grow into these trousers... >>

Thank You

Looking at the site stats this morning I was amazed to find that 'Trousers' has had over 1000 page views in the past month, from about 350 visitors worldwide. That's almost three pages each!
I thank you all.

Don't Go/Hothouse Flowers

Friday, 19 September 2008

Late night music - Otis Redding

Otis Redding
( Sittin' On ) The Dock Of The Bay

Weeing down my trouser leg #8 - Reductio ad absurdum?

Here's an Epicurean delight:
Is God willing to prevent evil, but not able? Then he is not omnipotent.
Is he able, but not willing? Then he is malevolent.
Is he both able and willing? Then whence cometh evil?
Is he neither able nor willing? Then why call him God?
"epicurean." Dictionary.com Unabridged (v 1.1). Random House, Inc. 19 Sep. 2008.

Well, there's a beer paid on for anyone who can explain the derivation of the term 'Epicurean delights".

Oh, and by they way, Reductio ad absurdum works like this:

(1) Assume not p
(2) Provide argumentation that derives p from this assumption.
(3) Maintain p on this basis.

(see The Internet Encyclopedia of Philosophy)

Discuss.

Thursday, 18 September 2008

A musical interlude - Fleetwood Mac

Sorry no video of this (none I've found yet), but the best version of Sara ever IMHO!

Fleetwood Mac - Sara - 1979

Grow into these trousers... >>

Wednesday, 17 September 2008

A short but fun time waster

Fabulous graphics, quirky music, comical or just bizarre problem solving. If you haven't played this yet find some time to waste, set your browser to full-screen and enjoy:


Tuesday, 16 September 2008

A gleam of sanity in Crazy Week

I admit I get too worked up sometimes, and this week seems to exemplify crazy, so it was good to read the insights of Taner Edis on the Michael Reiss/creationism issue and Sharia Law in the UK.

Followed by Richard Dawkins' letter to New Scientist on the Reiss controversy.

Michael Reiss has since resigned his position at the Royal Society.

Is it crazy week and no-one told me?

After the creationism debacle I commented on earlier, have a look at this Channel 4 documentary aired in February 2007:
Divorce Sharia Style

I could have made comments all the way through but I'll restrict myself to my first thought.
Part 1 - 3min:18sec - Maulana Abu Sayeed
"We are representatives of the words of god. We interpret the words of god"
Three points and then I will move on:
  1. Why do your 'interpretations' always sound as if you make them up?
  2. If your god is omnipresent, omnipowerful, omnicogniscent and omnibenevolent, why are you even needed? Surely such a god could impart his directives in a fair and just way directly to those involved. Cut out the middle man.
  3. If not 2), then who are you to interpret the mind of a god? See 1)
Grow into these trousers... >>

Monday, 15 September 2008

A quick lesson on your company's IT dept.

How To Get The IT Department To Do Their Actual Job


So true.

Sunday, 14 September 2008

Comedy?

Yes the best.
fish slapping dance

Saturday, 13 September 2008

Sorry for my rant

I feel better now I have got it off my chest.

And then I watched this (1h:31m).


As a European, I am proud to be descended from my African ancestors. I can not think of a more noble people.
--------------------
Thanks to Online Documentaries 4 U.

Oh No! Not in the UK!



From Thursdays Grauniad:

Blah.
The Royal Society just went down in my estimation. Big time.
Reverend Professor Michael Reiss, director of education at the UK's national academy of science said:
"I realised that simply banging on about evolution and natural selection didn't lead some pupils to change their minds at all. Now I would be more content simply for them to understand it as one way of understanding the universe"
Reiss wants the classroom to be broad minded and open and I would normally agree, but not in this case. Reality is not a consensus, though many think it to be so. Rather it is an endless learning curve. There is no vote in the 'how reality is' debate. None. Believing something is true, no matter how deep your conviction, does not make it true. Note this because the future of humanity depends on it.

Grow into these trousers... >>

Weeing down my trouser leg #7

It's very late and I feel Kinky

The Kinks- You Really Got Me

Grow into these trousers... >>

Late night music

The Beach Boys - Surfin' USA [Live]


There's another below the belt.

Thursday, 11 September 2008

Has the LHC destroyed the world yet?

A thorough and in-depth analysis of the current situation can be found here.
--------------------
Note: if you are interested, look at the page source code. It's cool Javascript.
Hat tip to Shores of the Dirac Sea.

A final farewell to 2867 Steins

It will be a long time, if ever, before humanity visits asteroid Steins again. Let's have a look back before moving on.

The mission plan


Below the belt is goodbye.
Grow into these trousers... >>

Wednesday, 10 September 2008

Late night music -#2

Elvis Presley, Hound Dog

Late night music

Ha Ha Great.

From Coyote Ugly - Blondie - One way or another

Why did Rosetta's camera switch off?

The answer - safety.

This is the best kind of image we will get:

Asteroid (2867) Šteins in color
Three color-filter images from the OSIRIS wide-angle camera were combined to produce this highest-resolution color view of the asteroid from the Rosetta flyby on September 5, 2008. Šteins is, essentially, gray. Credit: ESA ©2007 MPS for OSIRIS Team MPS / UPD / LAM / IAA / RSSD / INTA / UPM / DASP / IDA

Tracking such a small object as asteroid Steins on its (slightly) uncertain trajectory and at high relative speed, pushed Rosetta to its limits. The spacecraft was operating totally independently during the manoeuvre and it was vital that some areas of the craft, the so-called cold faces, received as little direct sunlight as possible. The strain on Rosetta's systems unfortunately took the narrow-angle camera outside of its operating range and the camera did the sensible thing. It put itself into safe mode to avoid damage. All other systems worked fine.

The Planetary Society reports:
One notable instrument found the extreme conditions of the flyby to be out of its set safety parameters, and put itself into a protective "safe mode" nine minutes before closest approach, recovering a few hours later. That instrument was the narrow-angle camera on OSIRIS, which would have produced the highest-resolution images of Šteins. OSIRIS principal investigator H. Uwe Keller explained that the safety parameters had been set conservatively on OSIRIS because, as interesting as Šteins is, it is not Rosetta's primary science target.
Rosetta will now loop back around the Earth before flying on to its next encounter, asteroid 21 Lutetia, on July 10th 2010.

Guess what? The Earth is still here.

First beam.

Tuesday, 9 September 2008

Chilling out music

Or not

Cream-Train Time live 1967

Big Bang Week on Radio 4

Pull up your trousers here, here and here (lol).


Interest in the switch-on of the LHC is growing apace. Good ol' Radio 4 has some fun videos on their site and is running a day full of linked broadcasts tomorrow. There's a history of CERN too, I'm listening to part2 live on radio right now, but you'll be able to get them both from the BBC for the next few days.

BBC news has a page of video presentations explaining the layout of the LHC and the different detectors. (Flash based)

Also the Quirks & Quarks podcast has a special feature on the LHC.

No doubt there will be TV coverage too but I've already got a backlog.

Monday, 8 September 2008

Rosetta camera glitch scuppers hi-res images

It seems a software problem on Rosetta switched of the hi-res camera so we will not be getting any higher definition images :(

New Scientist reports:
A glitch prevented the spacecraft from seeing the asteroid in even greater detail. OSIRIS's narrow-angle camera, which has a higher resolution, stopped collecting data minutes before the closest approach.

ESA scientists are still investigating why the instrument switched to this 'safe' mode, designed to protect the camera from injury.
Strangely, I can find nothing yet from ESA.

Brian Cox hits back at doom mongers

"Anyone who thinks the LHC will destroy the world is a t---."
Full article at the Telegraph.

Sunday, 7 September 2008

Richard Dawkins at TED

Dawkins talks about evolution, atheism and religion:

An atheist's call to arms.

How and why and where did civilization begin?

A good question.
Online Documentaries 4 U is sctatching my itch just now!

The lost pyramids of Caral


'Where' is well understood: Egypt, Mesopotamia, India, China, Peru and Central America.

'How' and 'why' are interlinked I think. If you want to do something you will try to find a way.

"Why are you doing this?"
  "Because I can better feed my family"
"How are you doing this?"
  "By coming to work here"

"Why are you doing this?"
  "Because it's safer"
"How are you doing this?"
  "As fast as I f**king can"

More on the LHC

Following up on yesterday's post, here are a couple of old BBC Horizon broadcasts (~50min each).

The Six Billion Dollar Experiment

Grow into these trousers... >>

Saturday, 6 September 2008

Our understanding of the structure of matter is about to change

We've all heard the hype, the world is about to end! OMFG!!


The Large Hadron Collider, or LHC, at CERN is about to be fired up. First beam as they euphemistically call it...

On Wednesday, after about 15 years of work, a science team numbering many thousands (to say nothing of the engineers, technicians, electricians, plumbers, cleaners, tea-ladies and PhD students) will throw a switch and turn on the biggest scientific experiment ever undertaken.

This project is huge with a capital HU!
Grow into these trousers... >>

Asteroid encounter #2

Pull up your trousers: Asteroid encounter.

The Rosetta spacecraft and asteroid Steins have danced together briefly in the cosmic void. Here's the first image release from ESA.

Asteroid Steins seen from a distance of 800 km, taken by the OSIRIS imaging system from two different perspectives. The effective diameter of the asteroid is 5 km, approximately as predicted. At the top of the asteroid (as shown in this image), a large crater, approximately 2 km in size, can be seen.
Credits: ESA ©2008 MPS for OSIRIS Team MPS/UPM/LAM/IAA/RSSD/INTA/UPM/DASP/IDA

Friday, 5 September 2008

Weeing down my trouser leg #6 - again

And then I thought... Lonnie Donegan wasn't so bad, really:

Lonnie Donegan's Skiffle Group - Puttin' On The Style

Grow into these trousers... >>

Batten down the hatches*

It's going to be wet:




















via the Met Office.
-----------------------------------------------------------------------------------
*This a nautical term

Thursday, 4 September 2008

Asteroid encounter

On Friday, ESA's Rosetta spacecraft will do a fly-by of asteroid 2867 Steins a small rock, a tiny rock, about 4.6 km across between the orbits of Mars And Jupiter.
Rosetta is currently tracking Steins and will make course adjustments, if needed, aiming for a closest approach of about 800 km.

This will be a good opportunity to test systems on Rosetta but also fascinating in it's own right. I'll try to post some images etc over the weekend as they as released.

The Rosetta mission is very ambitious including another asteroid fly-by (21 Lutetia in 2010) and culminating in a six month study of a cometary nucleus (67P/Churyumov-Gerasimenko in 2014) where it will orbit as close as 2km and release a lander to the surface.
From The Planetary Society:
Rosetta will spend six months mapping and observing Churyumov-Gerasimenko, which is only 4 kilometers/2.5 miles in diameter. Then, the spacecraft will release Philae, the lander, to the core for the first-ever direct sampling of a comet's nucleus. Rosetta will continue to make observations from as close as 2 kilometers/1.2 miles. Together with the lander, Rosetta will conduct a total of 21 experiments that will characterize the comet's dynamic properties and surface morphology, as well as determine physical properties of the surface and subsurface, and the chemical, mineralogical, and isotopic compositions.
Another mission to watch out for.
----------------------
Image credit: ESA

Monday, 1 September 2008

Weeing down my trouser leg #5

I just fancied a bit of the Grateful Dead, here's a couple of my faves.
From 'Dead Ahead':

Grateful Dead - Birdsong

Grow into these trousers... >>