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# Using computer techniques, researchers analyze layers of

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Manager
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Using computer techniques, researchers analyze layers of [#permalink]

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05 Apr 2007, 10:35
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12. Using computer techniques, researchers analyze layers of paint that lie buried beneath the surface layers of old paintings. They claim, for example, that additional mountainous scenery once appeared in Leonardo da Vinciâ€™s Mona Lisa, which was later painted over. Skeptics reply to these claims, however, that X-ray examinations of the Mona Lisa do not show hidden mountains.
Which of the following, if true, would tend most to weaken the force of the skepticsâ€™ objections?
(A) There is no written or anecdotal record that Leonardo da Vinci ever painted over major areas of his Mona Lisa.
(B) Painters of da Vinciâ€™s time commonly created images of mountainous scenery in the backgrounds of portraits like the Mona Lisa.
(C) No one knows for certain what parts of the Mona Lisa may have been painted by da Vinciâ€™s assistants rather than by da Vinci himself.
(D) Infrared photography of the Mona Lisa has revealed no trace of hidden mountainous scenery.
(E) Analysis relying on X-rays only has the capacity to detect lead-based white pigments in layers of paint beneath a paintingâ€™s surface layers.

It would nice to see the explanation to the answers.. as i cannot find a proper explanation for the OA.
If you have any questions
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Re: 1000CR - Mona Lisa [#permalink]

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05 Apr 2007, 10:55
surbab wrote:
12. Using computer techniques, researchers analyze layers of paint that lie buried beneath the surface layers of old paintings. They claim, for example, that additional mountainous scenery once appeared in Leonardo da Vinciâ€™s Mona Lisa, which was later painted over. Skeptics reply to these claims, however, that X-ray examinations of the Mona Lisa do not show hidden mountains.
Which of the following, if true, would tend most to weaken the force of the skepticsâ€™ objections?
(A) There is no written or anecdotal record that Leonardo da Vinci ever painted over major areas of his Mona Lisa.
(B) Painters of da Vinciâ€™s time commonly created images of mountainous scenery in the backgrounds of portraits like the Mona Lisa.
(C) No one knows for certain what parts of the Mona Lisa may have been painted by da Vinciâ€™s assistants rather than by da Vinci himself.
(D) Infrared photography of the Mona Lisa has revealed no trace of hidden mountainous scenery.
(E) Analysis relying on X-rays only has the capacity to detect lead-based white pigments in layers of paint beneath a paintingâ€™s surface layers.

It would nice to see the explanation to the answers.. as i cannot find a proper explanation for the OA.

The argument of the critics is based on the assumption that x-ray can detect any layer of paint hidden below the surface. If E were true, then a layer of paint not made of lead-based paint and hidden below the surface cannot be detected by the x-ray and computer analysis may reveal this layer.

Thus, E will weaken the skeptic's argument.
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05 Apr 2007, 16:03
Clear E.

The answer choice has to attack the weakness of using x-rays and only E mentions it.

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05 Apr 2007, 20:40
My vote for E
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Re: 1000CR - Mona Lisa [#permalink]

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05 Apr 2007, 23:00
surbab wrote:
12. Using computer techniques, researchers analyze layers of paint that lie buried beneath the surface layers of old paintings. They claim, for example, that additional mountainous scenery once appeared in Leonardo da Vinciâ€™s Mona Lisa, which was later painted over. Skeptics reply to these claims, however, that X-ray examinations of the Mona Lisa do not show hidden mountains.
Which of the following, if true, would tend most to weaken the force of the skepticsâ€™ objections?
(A) There is no written or anecdotal record that Leonardo da Vinci ever painted over major areas of his Mona Lisa.
(B) Painters of da Vinciâ€™s time commonly created images of mountainous scenery in the backgrounds of portraits like the Mona Lisa.
(C) No one knows for certain what parts of the Mona Lisa may have been painted by da Vinciâ€™s assistants rather than by da Vinci himself.
(D) Infrared photography of the Mona Lisa has revealed no trace of hidden mountainous scenery.
(E) Analysis relying on X-rays only has the capacity to detect lead-based white pigments in layers of paint beneath a paintingâ€™s surface layers.

It would nice to see the explanation to the answers.. as i cannot find a proper explanation for the OA.

E
Re: 1000CR - Mona Lisa   [#permalink] 05 Apr 2007, 23:00
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