Archive for the ‘science’ Category

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The new space race: commercial outfit SpaceX launches supplies to the ISS today

19 May 2012

I think we could be on the verge of an exciting new space boom. In less than 3 hours from the time I write this, a company named SpaceX will launch an unmanned rocket called Dragon with supplies for the International Space Station. It will have to navigate and dock, things SpaceX has already demonstrated in tests that they can do.

This isn’t the first commercial space venture, of course, but it’s the first non-government capsule that will connect to the ISS.

Space programs are huge. Can you imagine the industrial competition that will take place to get such massive contracts? Can you imagine the opportunity, the growth, that could easily produce?

It makes me very excited.

Read more about SpaceX and Dragon here.

EDIT: Nooooo! Engine anomaly means the launch is off.

Dragon. Photograph: SpaceX

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Steorn: finally backing down on claims?

14 May 2012

I’ve been blogging since 2006 about Irish company Steorn, ever since they claimed they’d created a device that broke the laws of physics and created more energy than it used. You can read the laughable history here.

Every once in a while I check in to see if anything’s happening: if any ludicrous new claims have been made, or any new demonstrations have failed (as they always have). There’s been no significant events, but there does seem to be an implicit admission in their website. The claims seem to have softened:

Delayed magnetic field propagation is a limited area of exploration within the physics community…The development of this technology is continuous as work progresses to the end goal of providing a safe, stable and continuous electrical power output.

They also talk about the experience in “e-commerce, anti-fraud, and energy” projects. If they still believed they had a machine that could solve the world’s energy problems it seems unlikely they’d list it third.

At least they’ve finally come to their senses. I hope no one outside the company lost any money on all that nonsense.

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The neuroscience of Bob Dylan’s genius

8 April 2012

What’s that? Science and Dylan together? Yum.

This Guardian article cleverly draws a line from what the right brain does, to the dark before the creative dawn, to Bob Dylan giving up music in the ’60s only to find a new voice.

Every creative journey begins with a problem. It starts with a feeling of frustration, the dull ache of not being able to find the answer …Tales of insight all share a few essential features that scientists use to define the “insight experience”. The first stage is the impasse. If we’re lucky, however, that hopelessness eventually gives way to a revelation.

During those frantic first minutes of writing ["Like A Rolling Stone", Dylan's] right hemisphere found a way to make something new out of a incongruous list of influences, drawing them together into a catchy song. He didn’t yet know what he was doing – the ghost was still in control – but he felt the excitement of an insight, the subliminal thrill of something new.

The story of “Like A Rolling Stone” is a story of creative insight. It took only a few seconds before a mental block became a work of art.

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Toronto teens send Lego man into space

27 January 2012

A great tribute to DIY science: two Canadian teenagers designed a balloon with cameras that ascended into the fringes of the atmosphere, recording cool images and then plummeting back to Earth. That link has a great video summary.

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Cloud quantum computing could be just as secure

23 January 2012

Cloud computing is using (possibly renting) computing power elsewhere via the internet.

Quantum computing is using the seemingly-odd behaviour of quantum mechanics to do computations in parallel, thereby multiplying computing speeds.

Some dudes have written a paper about research they’re doing into whether quantum computers could do calculations in the cloud securely.

That is pretty seriously cool.

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The Best of Starts With A Bang: Top 10 for 2011

31 December 2011

Starts With a Bang is my favourite science blog. Ethan does a great job of spelling out, in (literally) graphic detail, all sorts of difficult but fundamental topics. He’s very prolific and funny, too.

Here are his top 10 science stories of the year, as described on his blog:

  1. We Think Our Universe is Just One Tiny Bit of a Multiverse.
  2. How the Entire Universe Could Have Come From Nothing, to Give Us Everything!
  3. The First Atoms ever Formed in the Universe: Found, Direct from the Big Bang!
  4. The James Webb Space TelescopeSaved from the Brink of Termination.
  5. The Smallest Mini-Galaxy in the Universe: its Discovery and its Dark Matter.
  6. Why Claims of Cold Fusion Don’t Stand Up to Science.
  7. The Closest Supernova to us in a Generation.
  8. The Saga of Faster-Than-Light Neutrinos: Are They Real?
  9. The First Earth-like Exoplanets: Habitability and Size-wise.
  10. The Large Hadron Collider’s First Evidence for the Higgs.
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NASA gives nod to first private spaceflight to ISS

12 December 2011

From the AP:

A private U.S. company will attempt the first-ever commercial cargo run to the International Space Station next year.

NASA announced the news Friday, one year and one day after Space Exploration Technologies Corp., or SpaceX, became the first private business to launch a capsule into orbit and return it safely to Earth.

On Feb. 7, SpaceX will attempt another orbital flight from Cape Canaveral Air Force Station in Florida. This time, the unmanned Dragon capsule will fly to the space station and dock with a load of supplies.

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Great Pick-Up Lines In Science

5 December 2011
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Quantum locking makes for a cool levitation video

23 October 2011

Check this out. This is not a special effect. This is a quantum effect, made possible by magnetic flux tubes through imperfections in a very thin superconducting film. Be astonished, then read about it here.

 

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Robots invent their own language

20 September 2011

I found this on Discover’s website: an Australian researcher has taught robots to make new words for new places they discover, and share those new words with other robots. That’s so neat.

[Research team leader] Wiles outfitted each Lingodroid with an alphabet of beeps that correspond to letters. Then she programmed them to play a series of games in which they paired the letters into nonsensical combinations like “ja” or “ku” and joined those syllables to coin neologisms as needed. For example, in one game two robots roamed through a course and met in an unfamiliar part of it. The meeting triggered one robot to name the spot “jaya” and share the new word with its partner, who then added the word to its lexicon. In this way the robots slowly built a new language to describe their travels [pdf] and eventually even learned to communicate and understand directions.

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Richard Hammond’s Engineering Connections

12 September 2011

I was never a gearhead, nor was I a toff, so I never watched Top Gear that much.

I am an engineer, though, so when I saw a show called Engineering Connections on SBS I tuned in, even though it was prefaced as being presented by Top Gear‘s Richard Hammond.

It turned out to be just my sort of show. Hammond walks the viewers through the engineering challenges behind some of the biggest construction and design challenges in the world, including the Airbus A380, the Sydney Opera House, the Bilbao Guggenheim, super tankers, the Space Shuttle, and Japanese bullet trains.

The program’s focus is explaining how engineers overcame these challenges, though. Hammond describes the sources of inspiration – either in nature, or in simpler devices – for how these design problems were solved. These are the engineering connections.

He then proceeds – in his gee-whiz way – to construct examples, with the help of experts, that illustrate how these inspiring engineering connections work. For example, the show I caught last night was about the Opera House. They explained that the arched concrete blocks of the structure’s sails were strengthened using the same principles as one of those collapsing pop-up toys, and then showed how they could make a very strong arch out of styrofoam using the same principle of post-tension.

This show explains what engineering is about: the practical application of science, and re-using established ideas in new contexts. They do it in very simple ways that anyone can get. Hammond isn’t too annoying. I think it’s a great science show.

There have been three series. They were originally made for the National Geographic channel in the UK, but have also been shown on BBC2 and – here in Oz – on SBS.

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Humpback whales catch fish by blowing bubbles

10 September 2011

I’ve seen TV nature programs before that showed this behaviour by humpback whales: by blowing a curtain of bubbles around a school of fish, they can trap and catch and eat them.

The video below shows new data captured by American scientists who were able to slap data collection units on whales. They’ve been able to see the movements of the whales below the surface, how they make these bubble traps, and how there seem to be different kinds.

I found this video at LifeLines, a Scienceblogs blog that features podcasts of the American Physiological Society.

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Google goes maths crazy

17 August 2011

Google seem to be cementing their “mad genius” status. Not content with seizing control (i.e., buying Motorola mobile and therefore obtaining 30% of the North American Android market they kicked off) they seem fixated on mathematics.

Last month they bid the digits of pi in the auction for Nortel’s patents.

Now today the Google search page doodle image is an homage to Fermat’s Last Theorem (it’s the anniversary of Fermat’s birthday).

I have discovered a truly marvelous proof of this theorem, which this doodle is too small to contain.

I can hear cackling behind those castle walls, I tell you.

 

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Why I Love Science: Arithmetic at the maple house

12 July 2011

As a kid I worked the retail counter at my parents’ maple syrup business (very Canadian, I know). We’d total up people’s sweet purchases, take their money, and make change for them.

Customer after customer, and I eventually got accustomed to doing this arithmetic in my head. I came to recognise how those numeric gymnastics represented stuff that happened in the real world; that they were a language that described things (like a litre of maple syrup) and processes (like summing amounts for a total purchase). Math became visual in my head.

That visualisation only increased when I started playing around with the calculators we used for those retail transactions. I found the squaring function especially  mesmerising. Square 2 and you get 4. Square 4 and you get 16. Small potatoes. But square 16 and suddenly you’re off: 256. Square 256 and you’ve got a number that’s suddenly out of the range of a kid’s conception: 65,536. From there the numbers got so big so fast it made my head spin.

Those transactions at the maple counter were how I came to love numbers and mathematics.

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Why I Love Science: Animals

10 July 2011

A while ago I wrote a series of posts on the music that was, in my youth, formative for my eventual tastes. I’m now going to write some blog entries on the stuff that made me love science.

One of the first thing that made me think about science was a huge, tome-like book of animals that lived on my parents’ bookshelf when I was young. I don’t recall what it was called, or who published it (I suspect it might have been National Geographic). It might even still be there when I visit my family next week.

It was magical to me. It was big, thick and heavy. It had a little bit about extinct animals and the geological life of the earth. But mostly it was just about the many groups of animals that existed on the planet today.

There were all sorts of high-quality photographs of leopards and whales and snakes and voles and eagles and spiders and much more. It was presented fairly rigorously, often with latin names for the animals and descriptions of species, orders and and phyla. It was big, and felt exhaustive. I spent years looking at all the exotic animals within in, amazed at the range of life and at the diversity of species.

That big animal book, whatever it was, was incredibly important in forming my fascination with the living natural world.

Click to embiggen

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Semisolid Flow Cell: New designs for batteries

26 June 2011

Current electrical battery design uses the same cell for storage and discharge of electricity. A new design from MIT, however, separates the two mechanisms and stands to become cheaper and much more efficient. Look out, internal combustion.

A radically new approach to the design of batteries, developed by researchers at MIT, could provide a lightweight and inexpensive alternative to existing batteries for electric vehicles and the power grid. The technology could even make “refueling” such batteries as quick and easy as pumping gas into a conventional car.

The new battery relies on an innovative architecture called a semi-solid flow cell, in which solid particles are suspended in a carrier liquid and pumped through the system.

Flow batteries have existed for some time, but have used liquids with very low energy density (the amount of energy that can be stored in a given volume).

The new semi-solid flow batteries pioneered by Chiang and colleagues overcome this limitation, providing a 10-fold improvement in energy density over present liquid flow-batteries, and lower-cost manufacturing than conventional lithium-ion batteries.

Okay, maybe not as sexy-lookin' as a V8

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Can Brain Scans Predict Music Sales?

13 June 2011

From an article in Science, one study indicates that the reactions of teenage music listener’s brains may be better at predicting what songs will be a hit than by simply asking them which they like best.

Two years ago, Gregory Berns, a neuroeconomist at Emory University in Atlanta, was on the couch with his kids watching American Idol. One of the contestants sang the melancholy hit song “Apologize” by the alternative rock band OneRepublic, and something clicked in Berns’s mind.

He’d used the song a few years earlier in a study on the neural mechanisms of peer pressure, in this case, how teenagers’ perceptions of a song’s popularity influence how they rate the song themselves. At the time, OneRepublic had yet to sign its first record deal. A student in Bern’s lab had pulled a clip of “Apologize” from the band’s MySpace page to use in the study. When Berns heard the song on American Idol, he wondered whether anything in the brain scan data his team had collected could have predicted it would become a hit.

To find out what had become of the [120 random unsigned songs they picked for their study two years before], the lab bought a subscription to Nielsen SoundScan, a service that tracks music sales.

Intriguingly, the brain scan data predicted commercial success better than the subjects’ likeability ratings, which did not correlate with sales. “What is new and interesting about this study is that brain signals predict sales in a situation where the ratings of the participants don’t.”

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Shock wave from trombone filmed

29 May 2011

I used to play the trombone, so I’m tickled by this report: an acoustic shock wave has, for the first time, been filmed emanating from a trombone. It’s not super-visible; you might need to watch fullscreen to see it.

Also, a warning: this will only be interesting to vibration nerds (and, possibly, trombonists). The rest of you will be underwhelmed.

It’s the long tubes in the slide of the trombone that allow this sort of shock wave to form. Other wind instruments, like tubas, have longer wind pathways, but they curl around more.

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Scientists to sail robot boat on methane lake of Saturn’s moon Titan

15 May 2011

From the Guardian:

Space engineers are planning to build the first extraterrestrial boat. They want to launch the craft towards Titan – Saturn’s largest moon – and parachute it on to the Ligeia Mare, a sea of methane and ethane on its surface.

The robot ship would sail around this extraterrestrial sea for several months, exploring its coastline and measuring the winds and waves that sweep its surface.

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Teaching physics

11 May 2011

Once again, Randall nails it. At least, for the science nerds. HAW!

Click to view embiggened original

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