Retrotechtacular: The Bell Laboratory Science Series

For those of a certain vintage, no better day at school could be had than the days when the teacher decided to take it easy and put on a film. The familiar green-blue Bell+Howell 16mm projector in the center of the classroom, the dimmed lights, the chance to spend an hour doing something other than the normal drudgery — it all contributed to a palpable excitement, no matter what the content on that reel of film.

But the best days of all (at least for me) were when one of the Bell Laboratory Science Series films was queued up. The films may look a bit schlocky to the 21st-century eye, but they were groundbreaking at the time. Produced as TV specials to be aired during the “family hour,” each film is a combination of live-action for the grown-ups and animation for the kiddies that covers a specific scientific topic ranging from solar physics with the series premiere Our Mr. Sun to human psychology in Gateways to the Mind. The series even took a stab at explaining genetics with Thread of Life in 1960, an ambitious effort given that Watson and Crick had only published their model of DNA in 1953 and were still two years shy of their Nobel Prize.

Produced between 1956 and 1964, the series enlisted some really big Hollywood names. Frank Capra, director of Christmas staple It’s a Wonderful Life, helmed the first four films. The series featured exposition by “Dr. Research,” played by Dr. Frank Baxter, an English professor. His sidekick was usually referred to as “Mr. Fiction Writer” and first played by Eddie Albert of Green Acres fame. A list of voice actors and animators for the series reads like a who’s who of the golden age of animation: Daws Butler, Hans Conried, Sterling Halloway, Chuck Jones, Maurice Noble, Bob McKimson, Friz Freleng, and queen and king themselves, June Foray and Mel Blanc. Later films were produced by Warner Brothers and Walt Disney Studios, with Disney starring in the final film. The combined star power really helped propel the films and help Bell Labs deliver their message.

Continue reading “Retrotechtacular: The Bell Laboratory Science Series”

Using A Thermal Camera To Spot A Broken Wrist

Chemist and Biochemist [Thunderf00t] has shown us a really interesting video in which you can spot the wrist he broke 10 years ago using a thermal camera.

He was on an exercise bike while filming himself on a high-resolution thermal camera, As his body started to heat up he noticed that one hand was not dumping as much heat as the other. In fact one was dumping very little heat. Being a man of science he knew there must be some explanation for this. He eventually came to the conclusion that during a nasty wrist breaking incident about 10 years ago it must have affected the blood-flow to that hand, Which would go on to produce these type of results on a thermal camera while exercising.

Using thermal camera’s to spot fractures in the extremities is nothing new as it has the benefit of eliminating radiation exposure for patients, But it’s not as detailed as an X-ray or as cool as fluoroscopy and is only useful for bones near the surface of the skin.  It’s still great that you can visualize this for yourself and even after 10 years still notice a significant difference.

Continue reading “Using A Thermal Camera To Spot A Broken Wrist”

Go Small, Get Big: The Hack that Revolutionized Bioscience

Few people outside the field know just how big bioscience can get. The public tends to think of fields like physics and astronomy, with their huge particle accelerators and massive telescopes, as the natural expressions of big science. But for decades, biology has been getting bigger, especially in the pharmaceutical industry. Specialized labs built around the automation equipment that enables modern pharmaceutical research would dazzle even the most jaded CERN physicist, with fleets of robot arms moving labware around in an attempt to find the Next Big Drug.

I’ve written before on big biology and how to get more visibility for the field into STEM programs. But how exactly did biology get big? What enabled biology to grow beyond a rack of test tubes to the point where experiments with millions of test occasions are not only possible but practically required? Was it advances in robots, or better detection methodologies? Perhaps it was a breakthrough in genetic engineering?

Nope. Believe it or not, it was a small block of plastic with some holes drilled in it. This is the story of how the microtiter plate allowed bioscience experiments to be miniaturized to the point where hundreds or thousands of tests can be done at a time.

Continue reading “Go Small, Get Big: The Hack that Revolutionized Bioscience”

The Science Behind Boost Converters

[Ludic Science] shows us the basic principles that lie behind the humble boost converter. We all take them for granted, especially when you can make your own boost converter or buy one for only a few dollars, but sometimes it’s good to get back to basics and understand exactly how things work.

The circuit in question is probably as simple as it gets when it comes to a boost converter, and is not really a practical design. However it helps visualize what is going on, and exactly how a boost converter works, using just a few parts, a screw, enameled wire, diode, capacitor and a push button installed on a board.

The video goes on to show us the science behind a boost converter, starting with adding a battery from which the inductor stores a charge in the form of an electromagnetic field. When the button is released, the magnetic field collapses, and this causes a voltage in the circuit which is then fed through a diode and charges the capacitor a little bit. If you toggle the switch fast enough the capacitor will continue to charge, and its voltage will start to rise. This then creates a larger voltage on the output than the input voltage, depending on the value of the inductor. If you were to use this design in a real life application, of course you would use a transistor to do the switching rather than a push button, it’s so much faster and you won’t get a sore finger.

This is very basic stuff,  but the video gives us a great explanation of what is happening in the circuit and why. If you liked this article, we’re sure you’ll love Hackaday’s own [Jenny List] explain everything you need to know about inductors.

(updated thanks to [Unferium] – I made a mistake about the magnetic field collapsing when the button is pressed , When in reality it’s when the button is released that this happens. Apologies for confusion.)

Continue reading “The Science Behind Boost Converters”

Gain Access to Science Two Ways

Not a hack, but something we’ve been wanting to see forever is open access to all scientific publications. If we can soapbox for a few seconds, it’s a crying shame that most academic science research is funded by public money, and then we’re required to pay for it again in the form of journal subscriptions or online payments if we want to read it. We don’t like science being hidden behind a paywall, and neither do the scientists whose work is hidden from wider view.

Here are two heartening developments: Unpaywall is a browser extension that automates the search for pre-press versions of a journal article, and the Bill and Melinda Gates Foundation are denying rights to research that it has funded if the resulting publications aren’t free and open.

The concept of “publishing” pre-print versions of academic papers before publication is actually older than the World Wide Web — the first versions of what would become arXiv.org shared LaTeX version of physics papers and ran on FTP and Gohper. The idea is that by pushing out a first version of the work, a scientist can get early feedback and lay claim to interesting discoveries prior to going through the long publication process. Pre-prints are available in many other fields now, and all that’s left for you to do is search for them. Unpaywall searches for you.

Needless to say, this stands to take a chunk out of the pocketbooks of scientific publishers. (Whether this matters in comparison to the large fees that they charge libraries, universities, and other institutional subscribers is open to speculation.) The top-tier journals — Nature, Science, the New England Journal of Medicine, and others — have been reluctant to offer open access, so brilliant scientists are faced with the choice of making their work openly available or publishing in a prestigious journal, which is good for their career.

In a step to change the status quo, the Bill and Melinda Gates Foundation took their ball and went home; research funded with their money has to be open-access, period. We think that’s a laudable development, and assuming that the foundation funds quality research, the top-tier journals will be losing out unless they cooperate.

To be fair to the journal publishers, many journals are open-access or have open-access options available. The situation today is a lot better than it was even five years ago. But if we had a dime for every time we try to research some scientific paper and ran into a paywall, we wouldn’t be reduced to hawking snazzy t-shirts.

Thanks [acs] for the tip!

PUFFER: A Smartphone-Sized Planetary Explorer

Is there room on Mars and Europa for cute robots? [NASA] — collaborating with [UC Berkley] and [Distant Focus Corporation] — have the answer: PUFFER, a robot inspired by origami.

PUFFER — which stands for Pop-Up Flat-Folding Explorer Robot — is able to sense objects and adjust its profile accordingly by ‘folding’ itself into a smaller size to fit itself into nooks and crannies. It was designed so multiple PUFFERs could reside inside a larger craft and then be deployed to scout otherwise inaccessible terrain. Caves, lava tubes and shaded rock overhangs that could shelter organic material are prime candidates for exploration. The groups of PUFFERs will send the collected info back to the mother ship to be relayed to mother Earth.

We’ve embedded the video of the bot folding it’s wheels down to pass a low-bridge. You can get a view of the wider scope of functionality for the collection of demos on the project page.

Continue reading “PUFFER: A Smartphone-Sized Planetary Explorer”

NASA’s 2017-2018 Software Catalog is Out

Need some help sizing your beyond-low-Earth-orbit vehicle? Request NASA’s BLAST software. Need to forecast the weather on Venus? That would be Venus-GRAM (global reference atmospheric model). Or maybe you just want to play around with the NASA Tensegrity Robotics Toolkit. (We do!) Then it’s a good thing that part of NASA’s public mandate is making their software available. And the 2017-2018 Software Catalog (PDF) has just been released.

Unfortunately, not everything that NASA does is open source, and a substantial fraction of the software suites are only available for code “to be used on behalf of the U.S. Government”. But still, it’s very cool that NASA is opening up as much of their libraries as they are. Where else are you going to get access to orbital debris engineering models or cutting-edge fluid dynamics modelers and solvers, for free?

We already mentioned this in the Links column, but we think it’s worth repeating because we could use your help. The catalog is 154 pages long, and we haven’t quite finished leaf through every page. If you see anything awesome inside, let us know in the comments. Do any of you already use NASA’s open-source software?