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Science

Change the Future

Posted by Andrew at 6:44 AM on November 5, 2009

The Science Museum, London, is celebrating a century of science and as part of the festivities, it asked visitors to vote for the scientific discovery or invention that most “changed the future”.  The ten objects it put forward were:

1. Apollo 10 Capsule
2. DNA Double Helix
3. Electric Telegraph
4. Model T Ford
5. Penicillin
6. Pilot ACE Computer
7. Steam Engine
8. Stephenson’s Rocket
9. V2 Rocket Engine
10. X-ray Machine

And the winner was……the X-ray Machine, beating penicillin and the DNA double helix into 2nd and 3rd place respectively.  The discovery of X-rays in 1895 by Wilhelm Roentgen started a new era of medical diagnosis allowing medics to see inside living people without relying on surgery.  Today, the descendants of these first X-ray machines can almost measure what we think.

Amazingly, the particular X-ray machine shown was developed at home in under a year by Russell Reynolds while he was still at school.  He was assisted by his father, a general practitioner, and another inventor William Crookes.

Although some doctors were quick to pick up on the new invention it wasn’t until the 1920s that X-ray machines were widely used in medicine.

Making The Modern World is a complementary web site containing over a hundred scientific discoveries which helped shape civilisation.  Worth a browse.

What inventions today will have such an impact when we look back from 2109?

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How many times has Todd’s water been wee?

Posted by Matthew Greensmith at 3:36 PM on May 26, 2009

In #479 Todd mentioned about how much happier he was to be drinking tap water than the re-cycled urine the ISS occupants were looking forward to.  Now I was taught a long time ago about the water cycle of ocean, to rain, to river to ocean.  During this process animals drink it, or eat it in their food, then dispose of it in urine.  It got me thinking on a strange tangent about what the chances that Todd was actually drinking re-cycled without knowing.

So armed with Google and some very liberal over-simplification I have made a quick back of the envelope calculation.  There is no point in making any claim of accuracy in the amount of urine produced per day over all of time.  Taking today’s population of humans, cows, pigs and sheep we get roughly 87 Billion liters per day which will be substantially less than the actual total.  It needs to be because I am going to assume that this same volume is produced every day stretching back to when large animals are first recorded as being present 230 million years ago.

There’s a lot of water in the world, approximately 1.4 trillion cubic kilometers.  At 87 Billion liters a day it would take 16 Billion days to convert it all to urine.  Since the recorded beginning of large animals though, there has been 84 Billion days.  That would mean an average of 5 re-cycles for any given amount of water.

In reality there are lots of complications with these sums even outside the extremely inaccurate (but lowball) daily volume.  A lot of the water we drink leaves in sweat and our breath, and a lot of the water in urine comes from breaking down sugars fats.  The water gets into these through plants and then the animals in the food chain.  I think the numbers are good enough to make a solid claim that at least 10% of any volume of water has previously passed through a urinary tract.  The ISS is just increasing the percentage.

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Twitter With Your Brain!

Posted by susabelle at 9:13 AM on April 23, 2009

GO BADGERS

That was the post Adam Wilson made to Twitter by using only his brain.  Wearing a special red cap fitted with electrodes that connected to a computer flashing letters, by concentrating on the letters he wanted, Wilson was able to Twit the small message on the screen in front of him.

What this means for the rest of the world is almost beyond comprehension for those of us that regularly type, text, and click to send messages, visit websites, write emails, etc.  What this means for persons with physical disabilities, who have perfectly functioning brains but ill-functioning bodies, is that they may be able to communicate as easily someday as the rest of us do.  And all it takes is a silly red cap with electrodes.  No cumbersome pointing devices held by the teeth or strapped to the head, or custom keyboards that will take the pounding of a fist because the fingers can’t move.

What is even more surprising and exciting about this breakthrough is that it uses two existing products to do its job.  Twitter, of course, already exists and functions well for many people.  The electrode “brain cap” already exists as well, and is still being fine-tuned for work with computers.  Previous work had been focused on using brain implants to communicate, but this work is 10 years or more from any type of fruition.  Using existing products, Wilson, and his supervisor Justin Williams (both work for the University of Wisconsin) made the link that had not been made before.

This is exciting news for those suffering from debilitating, paralyzing injuries, whose brains are able to function normally in all ways except in the ability to communicate.  Hundreds of thousands of people in the United States alone suffer from such disabilities.  These types of breaks in technology can really leapfrog researchers ahead in their efforts to bring accessibility to all.

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What Hubble Brings Us or, Patience is a Virtue

Posted by Matthew Greensmith at 9:05 AM on April 7, 2009

The Hubble space telescope, now active for nearly 20 years, continues to send back images that amaze and astound scientists. And it’s not only the newest pictures being sent that are providing all of the “ooh” moments these days.

Scientists studying land-based telescope views discovered a gassy planet orbiting a nearby star (HR 8799), and then went back to images from Hubble that are at least ten years old to see if they could get a closer look. By using computer technology to “clean” the image, they were able to get a closer look at the gassy planet, which may not be as gassy as once thought. It might actually be water and land-filled, refueling the speculation that other planets can hold life as well. As in, “we are not alone.”

I’ve always been fascinated by Hubble’s images, and when images can be used to further develop scientific theories and expand on unkowns in our astronomical world, that is all that much better. It still bothers me to think that Hubble will be retired some day, as it is providing so much right now for scientists studying “other worlds.”

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Will You Celebrate Earth Hour? Is it Worth It?

Posted by susabelle at 9:50 AM on March 28, 2009

At 8:30 PM your time, Earthhour.org is encouraging you to turn off your lights to say “Yes! I care about the Earth”. Is turning off lights the answer?

It’s all about global warming. We use too much resources which release Carbon emissions and therefore, warm up the planet. Our children will then be living in a ecological nightmare.

There are some that say there is no real proof to show we are affecting the planet from raising in temperature. There are others that will argue we are going through a cycle that will revert back eventually. Maybe it’s just the fact the Earth is getting older, the moon is getting a millimeter closer and we are orbiting the Sun at a Whopping 67,000 Miles per Hour.

So we set aside an hour to turn off lights. Will that make a difference? Well, it will until we turn back on those lights. At least it’s 8:30 PM in your timezone. Could you imagine the powerdrain if the world turned back on the lights at the same time?

Earth Hour says if you don’t turn off the lights, you are saying NO to the Earth and yes to global warming. But if you have switched all your lights to energy saving bulbs and done your part in other ways, will you be a hypocrite for not doing Earth Hour?

However you look at it, there is a statement there. Be aware of your environment. It saves you money and could possibly help with Global warming. Happy Earth Hour, everyone

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Doodle Away During That Meeting…It’s Good For Your Brain!

Posted by Matthew Greensmith at 1:07 PM on March 13, 2009

A new study published in the February 26th journal Applied Cognitive Psychology suggests that doodling while listening actually can encourage memorization of facts and events. The UK’s Medical Research Council’s Cognition and Brain Sciences Unit in Cambridge, U.K., tasked 40 members to participate in the study, which required them to listen to a 2 1/2 minute tape giving several names of people and places, and were told to write down only the names of people going to a party.

Half of that group were asked to shade in shapes on a piece of paper at the same time, not attending to neatness. Participants did not know it was a memory test and were not told directly to doodle naturally.

After the exercise, all participants were asked to recall the eight names of party-goers, and eight additional place names which were included in the tape as incidental information. The doodlers were able to recall 7.5 names of people and places compared to only 5.8 for the non-doodlers.

Apparently, if someone is completing a boring task, like listening to a lecture or seminar, it is easy to let the mind wander to more interesting things. The act of doodling may rewire synapses in a way that keeps part of the brain available for the boring listening task, while the fidgety part of the brain has something to do with itself.

This could suggest that those that doodle, fidget, or otherwise make use of their hands may be looking for a way to help keep the brain on-track with the boring, but necessary activity.

I wonder, myself, why I listen so much better to podcasts when I’m alone in the car than I do riding in the car or sitting in a waiting room. In the car my hands and presumably my eyes are occupied with driving the daily commute, leaving the listening part of my brain ready and willing to absorb the spoken words of a podcaster. Or maybe it’s the reverse, that the driving is the boring part, and my mind is being enlivened by the podcaster, which then keeps me on task with the boring commute thing.

Either way, more interesting facts about the brain and how it operates in daily life. Now when my boss tells me to stop scribbling in my notebook during a meeting, I can tell her that I’m doodling to help my brain concentrate better on the meeting. She’ll buy that, I’m sure.

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The universe actually exists.

Posted by todd at 4:41 AM on March 10, 2009

I am sure that most of the GNC audience are familiar with the names Schrodinger, Bohr, Heisenberg, Young and potentially Hardy. All of these people have been instrumentally involved in quantum theory, and specifically for this article, in uncertainty theory. This is the paradox that the act of observation changes the observed. The classic example of this is a photon of light, where it is not possible to measure both its position and its momentum accurately. In fact the more accurately you determine position the less accurate your momentum observation can be and vice versa.

This goes beyond the observer effect, where the physical interaction of the observer directly changes what is measured. The paradox is that simply observing is enough to change the reality. While demonstratable in small particles the principle has been extended to larger objects like cats in boxes, trees in forests and even to ponder whether the physical properties of the universe we take for granted actually exist without our observation.

The Economist has reported on an experiment two groups of scientists have independantly taken to try and prove whether the universe actually exists when it isn’t observed. They have done this by performing experiments where they don’t actually collect all the data but using multiple experiments so that the aggregate parts were enough to draw conclusions.

The article is a little technical in that it uses casual throw-away lines like “photons are their own antiparticles, and are pure energy in any case”, but if your feeling really smart today here is a link to one of the actual papers. And just because I like it a link to an explanation of 10 dimensional space.

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Scotch Tape Xrays

Posted by Matthew Greensmith at 4:21 PM on October 23, 2008

Who knew that an ordinary roll of Scotch (TM) tape could be used to create Xrays?

Apparently, the Russians did in the 1950’s, but it was never developed. Researchers at UCLA have been toying with the power that comes from peeling tape from a roll in a vacuum. In fact, a mere piece of tape can produce an enormous amount of power, which surprised researchers. In an article being published in the Journal Nature, researchers are suggesting that the finding could lead to the production of inexpensive and easy-to-use equipment that could be used by paramedics on accident scenes or for places where electricity is not available.

The researchers have applied for a patent to protect their work. In this new research, a machine was used to peel ordinary Scotch tape off a roll in a vacuum chamber at about 1.2 inches per second. This caused rapid pulses of X-rays, each about a billionth of a second long, to emerge from very close to where the tape was coming off the roll. And that is where electrons jumped from the roll to the sticky underside of the tape that was being pulled away, As those electrons touched the sticky part of the tape, they slowed down, emitting readable Xrays.

So the question is, does this pose a danger for those of us slaving over wrapping paper this coming holiday season? Not so much. The research shows that this only works in a vacuum, and most of us are not wrapping presents in a vacuum.

So, no excuse for use geeks to not be wrapping presents this year. Dang it.

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The Future of Buckypaper

Posted by Matthew Greensmith at 9:28 AM on October 19, 2008

I may have reported on this before several months back, I’m not sure, but there have been some new advances in the potential manufacturing process for buckypaper.

Silly name for a product, but it has great potential for the future of planes, automobiles, and possibly even home construction. Buckypaper is 10 times lighter, but as much as 500 times stronger than steel. It is a composite product, but unlike other composites, it can conduct electricity like copper or silicon and disperses heat like steel or brass. It’s potential is unlimited, but only if the manufacture of it can be developed so that it is cost-effective and less time-intensive.

Buckypaper looks like ordinary carbon paper, but is actually created from tube-shaped carbon molecules 50,000 times thinner than a human hair. Because of its construction and conductivity, it can be used to lighten automobiles and airplanes, replace some functional components of computers and televisions, and even be used in the development of lower-cost solar options.

Researchers at Florida’s Rice University are working on revolutionary manufacturing techniques that may make the production of buckypaper much more cost-effective, as well as being less time-intensive. This new research is a major breakthrough on a project that has been taking shape over the last 15 years.

And if the name sounds funny, those that are science geeks like me will know right away that Buckminster Fuller had something to do with this. The discovery of “buckyballs” [buckminsterfullerene], soccer-ball-shaped molecules produced during an experiment with carbon, led to the development of buckypaper. Ah, the visionary and futurist Buckminster Fuller. He lives on!

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Distractions help you work

Posted by todd at 12:41 AM on October 14, 2008

We probably all have had times when we have had to step away from a problem before we can solve it. A new study reported in the Telegraph found that when solving problems, distractions can make the process faster. The theory behind this is that non-linear problem solving requires the help of the subconscious mind. When our conscious minds are completely engaged in a problem it drowns out any subconscious thoughts we might have on the subject. Distracting our conscious mind for a moment allows those thoughts to bubble to the surface where we can acknowledge them.

Sure makes me feel better about looking for interesting stories on the Internet when I should be working.

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High Tech XRays

Posted by shane at 11:59 AM on October 9, 2008

I finally went to the doctor this week for a pain in my neck. I figured it was just a muscle strain (it is) but they took an x-ray to check the bones. My wife works there so I was able to go “behind the curtain” to see my x-rays. I was looking for a wall light fixture to pin the sheets of x-rays on but there was not one there. Instead they had a scanner like machine that they placed the x-rays into & then it uploaded the images to the computer. So we were able to look at the images on a nice big screen. Pretty cool I thought. You could basically do anything you could with a regular photo. They moved it around and zoomed in on the bones they wanted to look at. The picture was crystal clear and much better than the old school way of doing this procedure. Now I have no idea how much this little gizmo cost but I reckon it was close to the cost of a small car. I don’t know if it is worth the cost but I do know it is better in many ways: visible details, digital storage, easily copied, can be emailed to the patient or a specialist. Things like this make better medical options available to us common geeks. I was just glad I got to see it in action.

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Did dinosaurs die from malaria?

Posted by todd at 8:53 PM on September 4, 2008

Science daily has an article discussing a new book, “What Bugged the Dinosaurs? Insects, Disease and Death in the Cretaceous,” by George and Roberta Poinar. In it they discuss the effect that insect born disease and parasites possibly had on the mass extinction of the dinosaurs. Modern technigues have shown that diseases like malaria existed during the Cretaceous and were present in blood taken from parasites preserved in Amber.

I love the new information we can discover from materials that are so old, and build such complex pictures of what was essentially a completely different world. Well worth the time to read the full article. It sort of puts a damper on the Jurasic Park idea though, if there are parasitic organisms mixed up in the dino blood samples there is even less chance of sequencing dinosaur DNA than ever.

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The Space Elevator, a Geeks Perspective

Posted by geeknews at 9:35 AM on May 21, 2008

I am not only a geek who loves technology but a geek who loves elevators. The past three years I’ve been following the progress of the “Space Elevator”, including competitions, cool animated PBS videos, and news regarding LiftPort, the company who is spearheading the Space Elevator project. While being an optimist at heart, the conclusion that I’ve come up after reading all the posts, news stories and competition reports is that we are far from developing an actual working “Space Elevator.”

For those of you who think that I’m crazy, the premise of the Space Elevator is as follows.  In the Pacific Ocean sits a base station, similar to an oil platform set as an anchor point for a long ribbon/cable made out of carbon nanotubes which extends into outer space. A space pod would then ascend and descend the carbon nanotube ribbon into outer space and to earth carrying payloads as needed.  The space pod would be powered by a laser beam directed at it from the base station. Motors then would work to ascend or descend as needed thus reducing the cost of the transportation of goodies into outer space.

So now that you have the general idea of how the space elevator works let’s take a step back and “see” where we are today. There is a space elevator competition every year and has teams from colleges and universities from around the global seeking to win the large amount of money if they can build a small robot capable of climbing to the top of a crane on a tether utilizing a laser beam powered motor/engine in a certain amount of time. While each year the goals increase a team has yet to win the large dollar purse.

Three months or so ago a record for the largest nanotube structure was created. Hold your horses everyone it looks as if it’s around eight feet tall by four feet wide. While it seems as if we’ve made advances in carbon nanotube manufacturing techniques, let’s face it, we have a long way to go if we want a ribbon cable that can stretch into outer space. Do I think that some day there will be a space elevator?  Absolutely, but perhaps not in my life time.  

Now I’m not all gloom and doom and for the most part am an optimistic geek good things come about through the race for the space elevator. Nanotube technology can really help any location devastated by an earthquake, like the recent one in China, or any other area that cell phone reception has been lost due to infrastructure tumbling. Tethered Towers, a company formed by Lift Port provides a means to launch tethered communication towers in less than 2 hours using what looks like weather balloons tied to  nanotube ribbons. Nanotube ribbons or cables are extremely strong which allows high altitudes for signal strength for many types of communication networks from radio to cellular. Imagine all the cell towers, radio towers damaged in the event of a catastrophe.  In two hours an antenna could be launched 1-2 miles up in the air allowing important information to be shared. I hope we never see this happen and that we never have a need for the Tethered Tower as we saw in China, devastated by earthquake there may be a day we rely on a communication system like this to keep us all in touch.  

Whether we see a space elevator in our lifetime is really not the issue. If technology like the Tethered Towers and other nanotube technology projects sprout up as an offshoot of the Space Elevator we will all be better off depending on how it helps mankind!

This article was submitted by Tom as part of a contest we are having on my podcast. His website can be found at elevatorradioshow.com

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