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Displaying items by tag: scientists

The world’s oldest wood carving just got older. Until last week, the Shigir Idol, a totemic sculpture that stands 2.8 meters (~9.2 feet) tall, was thought to be roughly 9,500 years old. New testing by German researchers now reveals it to have been made 11,000 years ago, making it twice as old as the ancient Egyptian pyramids at Giza, the Siberian Times reports.

The scientists in Germany used accelerated mass spectrometry to analyze seven small samples drawn from the wooden sculpture. The results date the idol to the very beginning of the Holocene epoch, or the geologic period that marks the development of human civilization.

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Leonardo da Vinci always impressed on his students the importance of depicting nature accurately. He wrote: “Painter, you should know that you cannot be good if you are not a master universal enough to imitate with your art every kind of natural form.” Indeed, his own paintings and drawings of the natural world are as scientifically accurate as they are beautiful.

Five centuries on, scientists and art historians are trying to work out to what extent Leonardo had a hand in both versions of "Virgin of the Rocks" – the one in the Louvre, in Paris, and the replica in the National Gallery in London.

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A zigzag engraving on a mussel's shell may transform scientific understanding of what has long been considered a defining human capacity: artistic creativity.

Until now, the earliest evidence of geometric art was dated from 70,000 to 100,000 years ago. Scratched into rocks found in South African caves, those engravings signified behavioral modernity: Homo sapiens' unique cognitive journey into a sophisticated world of abstraction and symbol.

But new analysis of an engraving excavated from a riverbank in Indonesia suggests that it's at least 430,000 years old—and that it wasn't made by humans, scientists announced Wednesday. At least it wasn't made by humans as most people think of them, meaning Homo sapiens.

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Life-sized figures sketched into red rock cliffs in Canyonlands National Park were drawn 1,000 years more recently than what had long been believed, a team of Utah State University scientists discovered about the world-renowned rock art.

The team used modern luminescence dating techniques to analyze when the art went up in what is known as the "Great Gallery" in southeastern Utah's Horseshoe Canyon. The researchers believe the figures were created 1,000 to 2,000 years ago instead of the previously thought 2,000 to 4,000 years ago.

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The Smithsonian Institution is now actively seeking volunteers to aid in the digitization of its collection. Through a new website launched today, the public can sign up for various transcription projects which will take thousands of hand-written artifact labels and make them available digitally for researchers.

Among the hundreds of thousands of documents that need transcribing are the labels attached to 45,000 bumble bee specimens in the collection of the National Museum of Natural History. The museum hopes digitizing that information will aid scientists studying the current global bee decline.

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A hidden painting has been found by scientists beneath the brush strokes of The Blue Room, a 1901 Picasso artwork.

Art experts and conservators at The Phillips Collection in Washington used infrared technology on the masterpiece, revealing a bow-tied man with his face resting on his hand.

Picasso created both works in Paris during his famous blue period.

"It's really one of those moments that really makes what you do special," said conservator Patricia Favero.

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Scientists are close to deciding how to restore a fading chalk sketch believed to be the only existing self-portrait by Leonardo da Vinci, following a hi-tech study of the paper.

The portrait, thought to be more than 400 years old, remains locked in a vault in the Royal Library of Turin, Italy, where it is believed to be gradually vanishing as the red-chalk image blends against the ageing yellow paper.

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 In the 1960s, the Abstract Expressionist painter Mark Rothko was commissioned by Harvard University to create a series of murals. Completed in 1962, the large panels were displayed in the University’s Holyoke Center (now the Smith Campus Center), which boasts floor-to-ceiling windows, from 1964 to 1979. Over time, the constant exposure to natural light caused the murals to fade and the once-vibrant paintings were relegated to storage, where they remained until now.

The Harvard Art Museums, which will reopen on November 16 following a major renovation, have devised a revolutionary technique to restore the murals to their original richness. The process, which was developed over several years by a team of conservators, curators, and scientists from Harvard, the Massachusetts Institute of Technology Media Lab, and the University of Basel in Switzerland, involves digitally projecting specially calibrated light to correct the murals’ devastating color loss. The works will be unveiled to the public in the exhibition “Mark Rothko’s Harvard Murals.”

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On May 1, 2013 the Van Gogh Museum in Amsterdam will re-open after being closed for months due to ongoing renovations. The exhibition that will inaugurate the newly updated space is Van Gogh at Work, an extensive overview of Vincent van Gogh’s (1853-1890) oeuvre that happens to coincide with the 160th anniversary of the artist’s birth. What the Van Gogh Museum kept quiet until now is that the exhibition will reveal research amassed during an eight-year analysis of the artist’s work.

The project, which was led by scientists at Shell in collaboration with the Dutch Cultural Heritage Agency and curators at the Van Gogh Museum, entailed analyzing hundreds of van Gogh’s canvases, pigments, letters, and notebooks. The research provided previously unknown insights into van Gogh’s temperament and personality. Contrary to popular belief spurred by the artist’s struggles with mental illness, van Gogh was not a manic painter, but painstakingly methodical. The use of an electric microscope and X-ray fluorescence spectrometry revealed that van Gogh used grids to accurately portray proportions and to create precise depth of field in his early landscapes.

Another insight the researchers uncovered involved van Gogh’s pigments. Tests done at the Shell Global Solutions labs revealed that some of the pigments used by van Gogh were chemically unstable and faded prematurely. In particular, scientists discovered that the color of the walls in van Gogh’s seminal painting The Bedroom was inaccurate. Van Gogh had used red and blue paints to create a violet hue but the red faded, leaving behind a much bluer color than he intended.

Beginning in September, the Van Gogh Museum will exhibit two versions of The Bedroom – one from its own collection and one from the Art Institute of Chicago’s collection. Van Gogh painted three versions of his room in Arles between 1888 and 1889 and all three of them have the same blue-hued walls. The presentation will also include a digital reconstruction of what the painting may have looked like when van Gogh first created it.

Van Gogh at Work will be on view through January 12, 2014.

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Energy efficient LED lighting, which is widely used in museums across the world, has altered the color of Vincent van Gogh’s (1853-1890) famous Sunflowers (1888). Once a vivid yellow hue, van Gogh’s masterpieces are darkening; scientists have discovered that certain yellow pigments from the 19th century become unstable after exposure to LED lights, turning them a brownish green over time.

Researchers in France and Germany sampled 14 works dating from 1887 to 1890 and tested for the reaction, which affects the oil paint color chrome yellow. A popular pigment at the time, artists such as Paul Cézanne (1839-1906) and Paul Gauguin (1848-1903) often used chrome yellow in their paintings. Upon their discovery, researchers suggested that museums avoid using LED lighting on certain works and switch to a safer illumination alternative.

Van Gogh painted his sunflower series as a welcoming present for his friend, Gauguin, and planned to hang the works in the room where he was to stay while in Arles. A copy by van Gogh from the original series is on view at the Van Gogh Museum in Amsterdam.

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