Dark news

Dark matter could meet its nemesis on Earth - New Scientist

That's interesting. They may be able to test Modified Newtonian dynamics (MOND) via an experiment on earth.

Actually, that puts in mind of the claims in the 1990's of some Russian scientist's experiments with a spinning superconducting disc that seemed to produce a slight anti-gravity effect. Here's a Slate article about it from 2002.

Haven't heard any more about that for a long time. I guess the secret, alien-run Earth Quarantine Force that kills off potential technology that could get us to the stars saw to that. (Hey, it's a working hypothesis, OK?)

And I am also reminded of an interesting recent article on dark energy on arXiv. As you may recall, Einstein added a deliberate fudge (the cosmological constant) to general relativity to make sure the universe wasn't expanding. (Expansion was not an idea in vogue at the time Einstein was doodling in the Patent Office.) Now that observation shows it's currently not only expanding, but accelerating, the talk is all of the mystery of dark energy.

Well, a couple of European physicists argue that there is no need to call it dark energy at all: it's just what happens with relativity. They argue that people are misunderstanding the cosmological constant totally, and (I think) people just have to get used to the idea that general relativity implies expansion.

I don't fully understand the argument: I'll have to re-read it again. But it does seem to me to be an argument that the answer to dark energy is fundamentally staring us in the face.

It's not that other scientists haven't thought of this; it's just that most seem to say "that's too easy, it can't be right." They write:

There is probably nothing very original in this note. The points we make here can be heard in discussions among physicists. However, for some reason they do not have much space in the dark-energy literature.

And towards the end of the article, they summarise it like this:

..to claim that dark energy represents a profound mystery, is, in our opinion, nonsense. \Dark energy" is just a catch name for the observed acceleration of the universe, which is a phenomenon well described by currently accepted theories, and predicted by these theories, whose intensity is determined by a fundamental constant, now being measured. The measure of the acceleration only determines the value of a constant that was not previously measured. We have only discovered that a constant that so far (strangely) appeared to be vanishing, in fact is not vanishing.

Our universe is full of mystery, but there is no mystery here. To claim that the greatest mystery of humanity today is the prospect that 75% of the universe is made up of a substance known as `dark energy' about which we have almost no knowledge at all" is indefensible.

Why then all the hype about the mystery of the dark energy? Maybe because great mysteries help getting attention and funding. But o ering a sober and scienti cally sound account of what we understand and what we do not understand is preferable for science, on the long run.

Pretty interesting, hey?

More crazy killers than you thought

Scale of mental health homicides 'is being played down' - Crime, UK - The Independent

The film-maker Julian Hendy began studying mental health homicides in Britain following the murder of his 75-year-old father, Philip Hendy, in Bristol in 2007. He investigated more than 600 cases, in a documentary, of homicide by people with mental health problems, dating back to 1993, and concluded there were more than 100 incidents a year, compared with the 50 stated officially...

Marjorie Wallace, chief executive of SANE, said :"This brave film reveals the reality of under-treated mental illness while raising urgent questions about the way we treat such homicides.

"Unfortunately, to reduce stigma there is a trend to underplay the scale of these tragedies, but this prevents lessons from being learned," she added.

I wonder if there are slippery figures quoted in this area in Australia too.

An Anthony Lane moment...

Reviewing "Shutter Island", Lane complains:

The final twist is a fizzle; not because we see it coming (though we do) but because Scorsese, with a great weight of exposition dumped in his lap, struggles to keep it snappy. He even has a character stand beside a whiteboard and point out written clues. It’s like having “I Walked with a Zombie” interrupted by “Sesame Street.”

Run away! Run away!

Yang Guoxiang | Military Aviation | Air & Space Magazine

A good interview here with a Chinese pilot who, in 1971, couldn't get a test H Bomb to leave his aircraft, and decided to return to base with the dangerous load still attached. The reaction at the base was slightly comic, in retrospect:

There were 10,000 people on the airbase, although only a few knew about
the mission I was on. If anything went wrong, thousands would lose their
lives. The bomb under the fuselage would be hanging just ten
centimeters (four inches) above the ground as I landed....

No one could be sure whether or not the bomb would explode if it
touched the runway, but I was confident that I could set the airplane
down gently. So I landed with the H-bomb hanging under me. It was a
perfect landing. When I shut down the engine, there was total silence; I
was completely alone. The airfield was deserted. All 10,000 personnel
were sitting in tunnels under the ground. I could not leave the cockpit:
there was no ladder for me to climb down from the fuselage that was
high above the ground.

I called the tower and asked for help. The tower told me to work my
way back to the tail and jump. The people in the control tower were
angry; in their eyes I had put 10,000 lives at risk.

And I had caused a big mess. When I notified the tower that I was
returning with the bomb, the evacuation siren went off. It was lunchtime
at the airbase; everyone was sitting down and eating. They had to rush
out, put on gas masks and scramble into the tunnels. A big rice cooker
caught fire because there was no one left to take care of the kitchen.
Everyone there then still remembers my name: I could have brought them
their Judgment Day.

It took a long time for anyone to come near my aircraft. Our
procedures for dealing with the H-bomb meant we had to wear rubber shoes
and clothing that would not create static electricity. No metal was
allowed in the area of the bomb. In the nuclear weapons storage bunker,
all steel columns were wrapped in copper. Now that I had unexpectedly
brought the H-bomb back, there were no service vehicles equipped with
the required shielding. I sat out on the field for a long while.

Australians behaving badly overseas - 1945 to 1952 edition

I don't recall reading any Australian reviews of this 2008 book about the role of Australians in post WW II Japan, but it sounds pretty interesting:

Some 20,000 Aussies served for over six years in Hiroshima and environs, doing their part in the demilitarization, democratization and rebuilding of Japan. The British Commonwealth Occupation Force (BCOF), as the Australian contingent was formally known, made its presence felt, and not always for the good. ...

Predatory male sexual behavior? Yes, lots of that, often involving rape, assault and sometimes murder. Combing historical records and firsthand accounts, the author paints a sordid picture, explaining why local Japanese referred to the Australians as yabanjin (barbarian). Gerster writes: "Quite apart from the assaults and rapes was the ruinous cultural violence of men misbehaving because they could." More often than not, their antics were fueled by excessive drinking, which helps explain why so many Japanese pedestrians were victims of hti-and-run accidents. ...

Local women were discouraged from taking up with the soldiers by authorities who "warned that if they consorted with the Australians, they would give birth to kangaroos." Many apparently took their chances due to destitute circumstances and the shortage of Japanese men.

However, there is one line which makes me wonder about the author:

The Pacific War left a bitter legacy in Australia as many soldiers had suffered horribly as POWs. Even today, the author asserts, "anti-Japanese sentiment is endemic in the general community."

If there is any, I thinks it's fed by the whaling issue more than any other.

But still, the book apparently makes the point that:

It is all the more striking then to discover that many Australians developed respect for and intimacy with the former enemy, overcoming their prejudices in a way that left them out of sync with popular attitudes when they returned home.

Worth being reminded

This is not a new conclusion, but it would appear to be based on new modelling, and is worth bearing in mind:

The sun goes through an 11-year solar cycle during which its luminosity varies according to the number of sunspots appearing on its face. The normal cycle has a small effect on Earth's weather. But sometimes lulls in sunspot activity can last several decades, driving down the sun's luminosity to a "grand minimum". The Maunder minimum lasted from 1645 to 1715 and may have contributed to the little ice age.

Stefan Rahmstorf and Georg Feulner of the Potsdam Institute for Climate Impact Research in Germany modelled what would happen to temperatures on Earth if a grand minimum started now and lasted until 2100. They found that while temperatures would go down by as much as 0.3 °C, global warming would push up temperatures by 3.7 to 4.5 °C - more than negating any effect of a global minimum

Hadn't heard that one before

Jesus’s trip to Stonehenge and other bizarre notions - Catholic Herald Online

This is a pretty amusingly savage review of a book that promotes the idea that Jesus visited England (and specifically, Stonehenge!) during the "missing years" between his childhood and adult ministry.

I had heard of purported visits to India and/or Tibet before, and of post-crucifixion tourism to Japan. But Stonehenge: that's a new one for me.

Just wait 'til he works out what airplanes do...

Proof that engineering and magic do not mix

Found via Scienceblogs:

Yes, but bad news for Australia's gas emissions

According to the ABC:

The lentil is commonly associated with the Indian dish dhal, flatulence and Neil the Hippy from the BBC comedy The Young Ones almost 30 years ago.

More recently though, the relatively cheap pulse has also emerged as one of the most lucrative crops to grow in Australia.

Last weekend, my wife tried a new recipe for braised lamb shanks, which featured mostly Indian curry-ish spices and lentils. The effects the next day were pretty dire.

Solar stuff up

At least in Victoria, putting solar on your roof top has not been going smoothly:

The Victorian Energy and Water Ombudsman, Fiona McLeod, said that six months ago there were 17 complaints a month but they had now reached 141 a month....

There are issues with the safety of some of the installations, but apart from that, there is the economic issue:

In November the state government lifted the rate Victorian households are paid for power they put back into the grid to 66 cents a kilowatt. But in switching to solar, many households have lost the discount rates they had for using off-peak power to run hot-water systems, reverse-cycle air-conditioners and in-floor heating.

The loss of those discounts has resulted in thousands of Victorian households being hit with higher power bills after switching to solar.

Yes, I would be mighty annoyed too if spending $5000 or more on solar resulted in higher electricity bills.

Apart from the link above, here's a longer article detailing the practical problems with installing solar. It includes this bit concerning the size of solar systems, about which I had been curious, because it seems that many companies lately have been advertising smaller systems, many just barely over one kilowatt:

Consumer Affairs Victoria and Energy Safe Victoria have been made aware of supposedly dodgy private operators who are either bringing in inferior panels from countries such as China, or installing the panels without adhering to the AS3000 standard for wiring.

These systems are not capable of generating the claimed one-kilowatt output.

A source at one power distributor told The Age homes with a standard one-kilowatt solar system, as recommended under Canberra's scheme, would ''very rarely'' contribute any power back to the grid and earn money for a household.

''Unless it's a sunny day, and a good quality panel, and not one of the cheap imports, a one-kilowatt system can barely power the fridge and hot water system, let alone feed any meaningful power back.''

Lots of problems yet to be sorted out.

Nuclear debate

Nuclear Power Plants Cost Too Much To Build

This article, and the comments that follow in rebuttal, makes for an interesting read on the issue of the economic cost of developing nuclear power.

Of course, it is only dealing with large power plants. It seems that virtually no one has looked at the costs of rolling out small scale nuclear (of the Hyperion type) on a large scale. (Yes I know, it seems only to be an option just starting to be available, although it also seems to me that small scale pebble bed may be a future option as well, if anyone will work on developing it.)

A long explanation

BBC News - Why is the car giant Toyota not Toyoda?

It takes a long time for them to explain, but it comes down to this:

"In 1936, the company held a competition for a new name. Toyota was a popular choice among many. "

According to the company, it received some 27,000 entries.

It says the winning design led to a change in the name of the automobiles and plants from "Toyoda" to "Toyota."

The name was chosen "because the number of strokes to write Toyota in Japanese (eight) was thought to bring luck and prosperity," it goes on.

The past remembered

Greeks mention the war in bitter German attack

Deputy Prime Minister Theodoros Pangalos said Germany had no right to reproach Greece for anything after it devastated the country under the Nazi occupation, which left 300,000 dead.

''They took away the gold that was in the Bank of Greece, and they never gave it back,'' he said. ''They shouldn't complain so much about stealing and not being very specific about economic dealings.''

Heh.

Yet another coming disaster

Disaster Awaits Cities in Earthquake Zones - NYTimes.com

Andrew Revkin is writing on more than just climate change now, it seems, with a long and interesting article here on what a disaster a major earthquake in Istanbul will be.

He notes, for example:

Some of Turkey’s biggest builders have readily admitted to using shoddy materials and bad practices in the urban construction boom. In an interview last year with the Turkish publication Referans, Ali Agaoglu, a Turkish developer ranked 468th last year on the Forbes list of billionaires, described how in the 1970s, salty sea sand and scrap iron were routinely used in buildings made of reinforced concrete.

“At that time, this was the best material,” he said, according to a translation of the interview. “Not just us, but all companies were doing the same thing. If an earthquake occurs in Istanbul, not even the army will be able to get in.”

And this:

One prediction about a potent quake concluded that 30,000 natural gas lines were likely to rupture. “If just 10 percent catch fire, that’s 3,000 fires,” he said, adding that the city’s fire stations are able to handle at most 30 to 40 fires in one day.

As for the status of engineers there:

Dr. Bilham at the University of Colorado has estimated that an engineer is involved in just 3 percent of the construction under way around the world.

Peter Yanev, who has advised the World Bank and the insurance industry on earthquake engineering and is the author of “Peace of Mind in Earthquake Country,” noted that in Turkey and other developing countries, even when someone with an engineering degree was involved, that was no guarantee of safe construction because there was little specialized training or licensing.

I also didn't realise that Tehran was in such danger too:

In Tehran, Iran’s capital, Dr. Bilham has calculated that one million people could die in a predicted quake similar in intensity to the one in Haiti, which the Haitian government estimates killed 230,000. (Some Iranian geologists have pressed their government for decades to move the capital because of the nest of surrounding geologic faults.)

Pity God can't arrange for one just big and localised enough to take out some uranium centrifuges.

Agreed

Why Clint Eastwood Is Ridiculously Overrated - The Daily Beast

I feel the same about Eastwood as I do about Mel Gibson: nothing they have ever done (that I have seen) strikes me as especially good. In fact, most of it I positively dislike.

Even if you don't agree with my assessment, I think the article is well argued and perhaps more generous than me, despite its title.

Local research news

Rising carbon snuffs coral

In a large experiment on Australia’s Heron Island, the team simulated CO2 and temperature conditions predicted for the middle and end of this century, based on current forecasts of the world’s likely emission levels and warming by the Intergovernmental Panel on Climate Change (IPCC).

The results of their analyses of the bleaching, growth and survival of a number of organisms including corals indicates that a number of very important reef builders may be completely lost in near future.

“We found that coralline algae, which glue the reef together and help coral larvae settle successfully, were highly sensitive to increased CO2. These may die on reefs such as those in the southern Great Barrier Reef (GBR) before year 2050,” says Dr Anthony.

As Ove Hoegh-Guldberg is one of the researchers involved, Andrew Bolt will no doubt dismiss this. And, I have to admit, I think Ove does tend to the most pessimistic interpretation of anything that affects coral.

However, I am still concerned that he is right on the long term prospects.

Just wondering

BBC News - Whale kills SeaWorld trainer during Orlando show

The first report of this I saw this morning said it wasn't during a show. This more detailed report seems to confirm it was, and will presumably affect some of the witnesses for some time:

Park guest Victoria Biniak told a local TV channel that the trainer had just finished explaining to the audience what they were about to see.

At that point, she said, the whale "took off really fast, and then he came back around to the glass, jumped up, grabbed the trainer by the waist and started shaking her violently. The last thing we saw was her shoe floating."

However, officials say the trainer apparently fell into the tank whilst addressing an audience of guests, and was killed accidentally by the killer whale.

I am curious as to how much money a killer whale trainer is paid. Surely it would be worth a hell of a lot in danger money.

And for that matter, will they finally give up on training these animals at all? Sound like they are too dangerous to bother with.

Update: go to the Orlando Sentinel for more confusion over exactly how it happened, as well as a line which I think they should change to avoid very black humour jokes:

Other eyewitnesses who were in the park for the Dining with Shamu told the Sentinel that a female trainer was petting a whale when it grabbed her and plunged back into the water. The whale reappeared on the other side of the tank.

There's also a photo of the deceased trainer, doing something you wouldn't get me to do for a million bucks.

An ever so slightly controversial teaching

A new religious opinion from Saudi Arabia:

Saudi religious figure Shaikh Abdul Rahman Al Barrak on Tuesday said that the mixing of genders at the workplace or in educational institutions was religiously prohibited on the grounds that it allowed seeing what must not be seen and engaging in forbidden conversations.

Those who refuse to abide by strict segregation between men and women should be put to death, he said.

This is, fortunately, not showing signs of being widely accepted:

However, Kuwaiti scholars said that such an edict could come only from "a senile person or someone who wants to sow sedition in the nation by allowing the killing of innocent people."

I didn't know that...(a long continuing series)

The mystery of the 100-tonne whale | Environment | The Guardian

From the above article talking about a stranded whale in England:

The carcasses can communicate zoonotic, or inter-species disease (as can live whales, a warning for anyone within spouting distance of a cetacean), or worse. The buildup of gases in an ­animal's stomach can cause a whale to expand to bursting point – in 1617, a sperm whale beached at Scheveningen in the Netherlands exploded, fatally infecting bystanders.