Dark Science

Dark Science at the Powerhouse MuseumUltimo science Festival may be over but the stories keep coming. We got a lot of coverage for our dark science nights in August. Here are just a few links to stories about the science of fear and pain;
1. Natasha Mitchell – the host of Dark Science presents All in The Mind on Radio National and has her take on the nights here.
2. 10daysofscience the NSW National Science Week committee’s great news blog about NSWk told a few stories about dark science here, here , here, here, here and here.

Take a look and tell us what you think.

Brazil nuts will always get to the top of your muesli

Ever wondered why the big pieces in your muesli come to the top when you shake it, or why when you try and shake things to mix them up some pieces clump together and just wont mix? Well then the university of Nottingham will explain the answer. Sixty Symbols is a series of (sixty) short videos explaining the meaning of the symbols used in Physics.

One of those symbols is Capital Gamma, the relationship between acceleration and gravity, also called the Brazil Nut effect. When a mixture of things is accelerated vertically relative to gravity the larger things in the mix will ALWAYS rise to the top (Brazil nuts in muesli). So shaking your muesli to mix it evenly just wont work.

 
icon for podpress  Brazil nut effect - sisty symbols: Play Now | Play in Popup | Download

This is an experiment you can try at home.

Dark Science

redder-on-a-plate11

As part of the Ultimo Science Festival this year the Powerhouse Museum will be hosting two nights of adults only Dark Science, or the science of dark things at least. With the help of experts and practitioners from around Sydney we are going to investigate the science of tattoos, skin suspension, skin cancer, piercing, fetish, fear, pain, pleasure, scarring, psychology, physiology, sociopathology, control, lieing…its a long list.

The first night will concentrate on matters of the flesh: skin and how it works, muscles and their control. While the second night will be all about the psyche: What’s on(in) your mind?

The fun part about each night is that the audience will get to experiment, with the topics, with each other and with themselves. How much do you know about the strength of your skin, about the way tattoos work, or what’s in the head of people who pursue seemingly painful practices. The topics are dangerous the talk is safe.

Natasha Mitchell from ABC radio national’s all in the mind program has agreed to come along and MC.

Sydney Crochet Coral Reef

Not long ago I wrote about the Museum presenting the Sydney Crochet Coral Reef as part of Ultimo Science Festival in August.

courtesy of In stitches

Well the In stitches Collective will be in the museum this Sunday March 29 from 3-5pm running a workshop. Wether you are an experienced crocheter who wants to be part of this global phenomena or an inexperienced crocheter, the workshop will cater for you.

To take part simply turn up at the Powerhouse on Sunday, normal Museum entry applies but this will also let you come back to workshops each month and into the exhibition in August.

All workshop participants will have the opportunity to submit completed coral pieces for possible inclusion in the exhibition.

Future workshops
April 26, May 31, June 29, July 30
3-5pm
Powerhouse Museum
Free with Museum entry

August 8th
Exhibition 10-2pm
Workshop 12-2pm
Powerhouse Discovery Centre
Cost: TBC

Darwin in museums

Last chance to see Darwin at the NMA, Canberra

Darwin’s original notebooks used on the Beagle and a reconstruction of his study share the stage with living plants and animals in the Darwin exhibition at the National Museum of Australia, Canberra. The exhibition, which is organised by the American Museum of Natural History, New York, will be closing on Sunday 29 March.

The accompanying NMA exhibition, Darwin and Australia, showing Darwin’s experiences and encounters during his visit to Australia, closes on the same day.

Maritime exhibition on Darwin at sea opens in Sydney

Join Charles Darwin aboard the Beagle in Charles Darwin – voyages and ideas that shook the world, at the Australian National Maritime Museum, Sydney, opening Friday 20 March. See how Darwin lived aboard the Beagle and examine some of the specimens he collected on the voyage which set him on the path to his theory of evolution.

Coinciding with the opening of the exhibition, a symposium In the wake of the Beagle: Science in the Southern Oceans from the Age of Darwin is being held at the National Maritime Museum on 20-21 March. Internationally acclaimed speakers will explore the work of Darwin and his contemporaries, Joseph Hooker, Thomas Huxley and Alfred Wallace, and their influence on current scientific research.

And also at the ANMM, Happy Birthday Mr Darwin on Thursday 26 March. What were the contributions of artist Conrad Martens, who spent a year on the Beagle, and Joseph Hooker, who classified Darwin’s Galapagos plants and became his greatest friend.

Could you be a CSI and identify blood spatters

Blood spatter from New Scientist
This just in from New scientist
Bloodstain analysts claim to be able to identify how a bloodstain was created – whether by dragging, dripping, or impact at close range – simply by looking at it. But no-one has tested the accuracy with which they can do this until now.

Brian Gestring of Cedar Crest College in Allentown, Pennsylvania, conducted a preliminary study in which 92 professional analysts and 65 non-experts were asked to name the mechanism by which ten different blood patterns were created. The blood patterns were not from real crime scenes, but were recreated using animal blood.

He found that the experts got it right 97% of the time, while laypeople guessed correctly in 21% of cases. The study, which was presented at a meeting of the American Academy of Forensic Sciences in Denver, Colorado, last week, is a first step towards being able to quantify an error rate for bloodstain analysis. Jurors could be presented with the error rates when hearing evidence in court.

The next step will be to recreate an entire crime scene and test the ability of analysts to interpret what has happened.

See the New Scientist quiz here I got 80% – how did you do?

Links
New Scientist

Australian Solar Feed In Tariff Petition Tops 10,000

lights
Melbourne, Victoria, 25 February 2009. A petition calling for the Federal Government to implement a national solar gross feed-in tariff program has already gathered over 10,000 signatures in support, less than a month after it was launched.

The FeedInTariff.com.au petition is backed by key lobby and industry groups, including the Australian Greens, the Alternative Technology Association, a range of environmental sites and renewable energy bodies.

FeedInTariff.com.au calls for the introduction of a uniform gross feed-in tariff system similar to the model being launched by the ACT Government, where owners of renewable power systems are paid a premium rate for each kilowatt hour of electricity they produce.

Each state in Australia currently has its own tariff system. Most programs, where they exist, use an inferior net model, where only surplus electricity generated receives a premium payment.

Energy Matters spokesman Andrew Scarlett said the organisation had been lobbying for a gross feed-in tariff for a long time. “We were frustrated by the lack of action from more subtle behind-the-scenes efforts, so we decided to take this more public initiative.”

“Feed-in tariffs work. They’re good for the economy, good for the environment and they make people part of the solution to climate change. This petition tells Government its electors are watching, they want to be part of the solution and expect Government to give them that opportunity”, Mr Scarlett said.

Energy Matters also launched a Facebook group “Help PM Rudd Choose a solar future“, which accumulated more than 2,000 members.

“The incredible response to the initiative has not been driven by paid advertising, but mostly through word of mouth by Australians concerned about the country’s future. These people are saying they want to be part of the solution to the problems caused by coal. The results show considerable support for a national gross feed-in tariff. The electorate wants Prime Minister Rudd to shift the focus from coal to a solar future for our nation”, Mr. Scarlett said.

“All that remains for a solid feed-in tariff program to come to fruition is for political will to reflect the will of the voting public. Successful gross feed in-tariff programs have been established around the world, resulting in marked increased uptake of solar and wind power, stimulating local economies and helping governments towards their renewable energy targets.”

How do you combine multi dimensional mathematics, the great barrier reef and hand crafts

http://sydneyreef.blogspot.com/ image from Institute For Figuring
The answer is the Sydney crochet coral reef. An offspring of the crochet coral reef presented by Margaret and Christine Wertheim and initiated by The Institute For Figuring, originally inspired by geometric models of hyperbolic space developed by mathematician Dr Daina Taimina in 1997.

Hyperbolic space is intriguing on its own with a complex relationship to the work of Einstein to mention just one. As an idea though it is another in that long running set of understanding changes that lead to new understanding of the world. It is something that everyone should try and think about at least once.

That is where the Coral reef and crochet come into it. Dr Taimina discovered that one of the simplest ways to represent the growth of hyperbolic space was to crochet it. If you crochet the right pattern you form shapes reminiscent of hyperbolic space. What’s more when you look at your crocheted things you discover they are also reminiscent of coral. Another little known fact is that coral and a number of other marine organisms grow in hyperbolic ways.

Put it all together as the Wertheim sisters did and you have a hyperbolic crocheted coral reef. Three Sydney artists have been inspired to build/grow their own. In stitches, the Sydney reef artists, are calling on the community to join their collective of coral reef crocheters (is that the word). Get a group of like minded people and crochet away.

While you crochet think about hyperbolic spaces, discuss the demise of Euclid’s fifth axiom, you could also discuss the parallels between that and the decline in coral reefs around the world, or why it is that you know so few mathematicians and yet maths is all around you.

Watts in a name – Wattzon, another footprint calculator

I plugged my self into an new online footprint calculator -yes another one, to check myself out. As always there are good and bad points to note. The site is Wattzon

Positives
1. It uses Watts to measure your footprint – which is a logical way to analyse what is predominantly an energy topic. Watts are of course the units associated with household electricity.
2. You can compare yourself to other people and the world
3. Wattzon calculates your portion of published government activity
4. This footprint takes account of the lifecycle energy of the stuff you own

Negatives
1. A Watt is a difficult unit for many people to get their heads around – but then aren’t they all. Maybe laps of the oval would be better (its always easy to make suggestions from the sidelines)
2. Comparisons can lack validity (see 3 & 4 below). My energy use might be like apples to someone else – especially Americans which is the only comparison I get.
3. Unfortunately the energy in stuff can be questionable as well – for instance my scooter is supposed to embody more energy than a motorcycle because Wattzon gives scooters a 15 year life cycle and motorcycles 40 years – my scooter is already 40 years old.
4. My consumption is greater because I have gone through the time consuming process of adding extra stuff not on the standard list.
5. If I compare myself to a wind turbine I get a huge picture likewise for solar voltaics – wow such a big impact, compared to 5 gallons of oil a day- so little consumption. You can’t compare my annual wind/solar use to my daily oil use.

Overall
Wattzon offers a new approach and a new unit of comparison, but like all generic footprint tools my specific life translates badly. There is no allowance for how I get my energy or my food.

I like the idea of footprinting tools but they all are hindered by the need to make the process quick for the internet generations/ rapid twitching, so sacrificing parts of the impact.

Anyway here is my footprint according to Wattzon.

So who wants to live forever?

Prof. David Handelsman, Director, ANZAC Research Institute
http://www.anzac.edu.au asks

What is the SECRET OF HEALTHY AGING IN MEN?

A research team at the Andrology Department of Concord Hospital’s ANZAC Research Institute is interested in this question and collaborates with the Prince Henrys Institute of Medical Research in Melbourne to evaluate the testosterone levels of healthy Australian men over 40 years of age.

Thanks to improved health Australia will see men over the age of 65 nearly triple from the present 1.4 million to an estimated 3.6 million in 2051. As a result a key National Research Priority is to promote healthy, enjoyable and productive independent living for older men for as long as possible.

One widely discussed possibility to improve the health of older men could be testosterone treatment. Testosterone is the major male sex hormone and it decreases gradually with age. Restoring levels to those of young men might reverse some physical ailments of older men. However, it is not yet clear if and when such treatment is needed or whether it is beneficial. That probably depends on how well maintained or low a man’s own blood testosterone levels are.

A crucial first step in deciding whether testosterone treatment for middle aged and older men might be useful is to establish reliable normal ranges for blood testosterone levels of healthy men as they get older. This would help work out which men might benefit from treatment and who do not need treatment. Though it is already known from other studies in Australia and overseas that testosterone levels do decline slowly with age, previous studies had methods that were not sufficiently reliable to provide a proper guide for such treatment for Australian men.

For this purpose the research team is evaluating the health of 200 men at 5 short visits over a period of three months. No drug treatments are administered, but extensive blood testing will be performed.
This study is supported by the MBF Foundation.

If you are interested in being a part of this study that may be changing the way aging is treated in the 21st century you can be a part of this study.

OR if you know a man over 40 who feels very well, he might be an ideal candidate for the “HEALTHY MAN STUDY”!

Interested men please call the Andrology department on: (02) 9767 7222 or e-mail to: healthyman@anzac.edu.au



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