The Daily Croissant

Eclectic Perambulations in the Noosphere

  • Mount Roraima - the highest of the Pakaraima mountains

    • 17 Jun 2011
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    • 16June11 Brazil Guyana Landforms Mount Roraima Pakaraima mountains Venezuela
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    Media_httpiimgurcom0e_ehpik
    Mount Roraima is the highest of the Pakaraima mountain chain in South America. The 31 square kilometer summit area is defined by 400 meter tall cliffs on all sides and includes the borders of Brazil, Venezuela, and Guyana. The tabletop mountains of the Pakaraima’s are considered some of the oldest geological formations on Earth, dating back to some two billion years ago.
    see more great photos via all-that-is-interesting.com

     

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  • Elusive Arch

    • 17 Jun 2011
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    • 16June11 illusions
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    Elusivearch
    (© 2005 Dejan Todorović)

    Shading is a powerful way to represent the relief of 3-dimensional objects in pictures. However, the way our vision interprets shaded images depends on the shape of their contours. Here two different contours of the same shading pattern convey two different reliefs, joined into an impossible object  

    via illusioncontest.neuralcorrelate.com

     

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  • Cassini Mission : View Saturn...

    • 17 Jun 2011
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    • 16June11 Cassini Film Shorts Saturn
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    Credit: Images : Cassini Imaging Team, ISS, JPL, ESA, NASA ; Video Compilation : Chris Abbas ;
    Music Credit & License : Ghosts I-IV (Nine Inch Nails)

    "What has the Cassini orbiter seen since arriving at Saturn? The above music video shows some of the highlights. In the first time-lapse sequence (00:07), a vertical line appears that is really Saturn's thin rings seen nearly edge-on. Soon some of Saturn's moon shoot past. The next sequence (00:11) features Saturn's unusually wavy F-ring that is constrained by the two shepherd moons that are also continually perturbing it. Soon much of Saturn's extensive ring system flashes by, sometimes juxtaposed to the grandeur of the immense planet itself. Cloud patterns on Titan (00:39) and Saturn (00:41) are highlighted. Clips from flyby's of several of Saturn's moon are then shown, including Phoebe, Mimas, Epimetheus, and Iapetus. In other sequences, moons of Saturn appear to pass each other as they orbit Saturn. Background star fields seen by Cassini are sometimes intruded upon by bright passing moons. The robotic Cassini spacecraft has been revolutionizing humanity's knowledge of Saturn and its moons since 2004."   Astronomy Picture of the Day

    via vimeo.com

     

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  • Meadow Wildflowers

    • 17 Jun 2011
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    • 16June11 Flora photography
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    Photo courtesy PDPhoto.org  
    via pdphoto.org

     

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  • Hummingbird Clearwing Moth - Hemaris Thysbe

    • 17 Jun 2011
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    • 16June11 Moths insects
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    Media_httpwwwcirrusim_ndbkf

    Commonly called common clear-wing, hummingbird moth, sphinx colibri. L

    "Hemaris thysbe, the Hummingbird Clearwing Moth or Common Clearwing (wingspan 38-50 mm), readily visits flowers by day throughout the eastern half of the U.S. and Canada, where it ranges far to the north, even into the Yukon. Its larvae feed on honeysuckle, buckbrush, wild cherry and plum. Adults hover to take nectar at many different flowers, including honeysuckle, beebalm, phlox, lilac and bergamot.  

    It is not difficult to see why many gardeners would mistake an Hemaris thysbe moth for a small hummingbird as it hovers, sipping nectar from flowers through a long feeding tube. The moth hovers briefly, sipping for only a few seconds before darting off to a new flower. Green body "fur" and burgundy wing scales suggest a small ruby throated hummingbird."

    For more stunning images see cirrusimage.com

     

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  • The Puyehue-Cordón Caulle eruption in Chile

    • 17 Jun 2011
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    • 16June11 Chile Volcanoes
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    The ash plume from the June 4, 2011 eruption of Puyehue-Cordón Caulle, Chile.
    via bigthink.com

     

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  • This is EMMA : Electron Model of Many Applications:

    • 17 Jun 2011
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    • 16June11 Nanotechnology Nuclear Reactor Radioactive Waste Science Thorium
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    Cryogenics engineer Rachael Buckley inside the 'Emma' (the Electron Model of Many Applications) accelerating ring at Daresbury

    By David Rose

    "Imagine a safe, clean nuclear reactor that used a fuel that was hugely abundant, produced only minute quantities of radioactive waste and was almost impossible to adapt to make weapons. It sounds too good to be true, but this isn’t science fiction. This is what lies in store if we harness the power of a silvery metal found in river sands, soil and granite rock the world over: thorium.

    One ton of thorium can produce as much energy as 200 tons of uranium, or 3.5 million tons of coal, and the thorium deposits that have already been identified would meet the entire world’s energy needs for at least 10,000 years. Unlike uranium, it’s easy and cheap to refine, and it’s far less toxic. Happily, it produces energy without producing any carbon dioxide: so an economy that ran on thorium power would have virtually no carbon footprint."

    dailymail.co.uk

     

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