- Cliodynamics: History as Science — a systematic application of the scientific method to history: verbal theories should be translated into mathematical models, precise predictions derived, and then rigorously tested on empirical material. In short, history needs to become an analytical, predictive science.
- Cricket — indoor location system from MIT. In a nutshell, Cricket uses a combination of RF and ultrasound technologies to provide location information to attached host devices. Wall- and ceiling-mounted beacons placed through a building publish information on an RF channel. [...] The listener runs algorithms that correlate RF and ultrasound samples (the latter are simple pulses with no data encoded on them) and to pick the best correlation. Even in the presence of several competing beacon transmissions, Cricket achieves good precision and accuracy quickly.
- The World at Night — an international effort to present stunning nightscape photos and time-lapse videos of the world’s landmarks against celestial attractions.
- Paul Steinhardt on Impossible Crystals (YouTube) — quasi-crystals with five-fold symmetry previously believed impossible. And then he found one, and led an expedition in 2011 to Chukotka in Far Eastern Russia to find new information about its origin and search for more samples. As you do when you’re the Albert Einstein Professor of Science at Princeton, a job title that comes with no pressure at all to bring home the impossible.
ENTRIES TAGGED "astronomy"
History as Science, Indoor Location, Nightscape Photography, and Finding the Impossible
A clever data project shows the promise of open and freely accessible academic literature.
Cartographic Data Tool, Astronomical Volumes of Astronomical Data, Faster Touch, and Why MS Open Source?
- CartoDB (GitHub) — open source geospatial database, API, map tiler, and UI. For feature comparison, see Comparing Open Source CartoDB to Fusion Tables (via Nelson Minar).
- Future Telescope Array Drives Exabyte Processing (Ars Technica) — Astronomical data is massive, and requires intense computation to analyze. If it works as planned, Square Kilometer Array will produce over one exabyte (260 bytes, or approximately 1 billion gigabytes) every day. This is roughly twice the global daily traffic of the entire Internet, and will require storage capacity at least 10 times that needed for the Large Hadron Collider. (via Greg Linden)
- Faster Touch Screens More Usable (Toms Hardware) — check out that video! (via
- Why Microsoft’s New Open Source Division (Simon Phipps) — The new “Microsoft Open Technologies, Inc.” provides an ideal firewall to protect Microsoft from the risks it has been alleging exist in open source and open standards. As such, it will make it “easier and faster” for them to respond to the inevitability of open source in their market without constant push-back from cautious and reactionary corporate process.
Alasdair Allan on how machine learning is taking over the mainstream.
From Goodreads to Google to Orbitz, machine learning is slowly becoming part of everyday life. Alasdair Allan discusses current uses and how machine learning factors into his own robotic telescope network.
According to William Castleman: “The time-lapse sequence was taken with the simplest equipment that I brought to the star party. I put the Canon EOS-5D (AA screen modified to record hydrogen alpha at 656 nm) with an EF 15mm f/2.8 lens on a weighted tripod. Exposures were 20 seconds at f/2.8 ISO 1600 followed by 40 second interval. Exposures were controlled by an interval timer shutter release (Canon TC80N3). Power was provided by a Hutech EOS203 12v power adapter run off a 12v deep cycle battery. Large jpg files shot in custom white balance were batch processed in Photoshop (levels, curves, contrast, Noise Ninja noise reduction, resize) and assembled in Quicktime Pro. Editing/assembly was with Sony Vegas Movie Studio 9.”
In this tightly cropped image, the NASA space shuttle Atlantis is seen in silhouette during solar transit, Tuesday, May 12, 2009, from Florida. This image was made before Atlantis and the crew of STS-125 had grappled the Hubble Space Telescope. Photo Credit: (NASA/Thierry Legault) Thierry made this image using a solar-filtered Takahashi 5-inch refracting telescope and a Canon 5D…