National Gallery of Art 新增了 2 張新相片。
An #XRay is a type of radiation that can reveal much about a work of art, including the artist's working process and materials, as well as an artwork’s history and condition. The degree of x-ray penetration is dependent on a material's atomic weight: the lower the atomic weight, the more easily x-rays will pass through and appear dark in the x-radiograph; in contrast, materials of a high atomic weight absorb x-rays and will appear white.
Similarly, the thickness of materials will also affect the degree of opacity in an x-ray film. For example, the x-radiograph of Tiepolo’s “Young Lady in a Tricorn Hat” reveals several compositional changes, showing us that the artist reworked the composition. What changes can you see? Why do you think the artist chose to make those changes?
The most dramatic change is the woman’s fan, originally painted open. In addition, we can see a shift in her fingers, as they were originally painted to accommodate the open fan. The radio-dense paint ‘lead white’ was likely used to paint the fan--allowing us to clearly see the change in the x-radiograph. Similarly, there are numerous changes to the contours of the open fan--before it was completely altered--and the position of the woman’s mask. This suggests that both were reworked during the artist’s process. What more can you find? #ArtAtoZ
X-radiograph of "Young Lady in a Tricorn Hat," Giovanni Battista Tiepolo, c. 1755/1760, oil on canvas, National Gallery of Art, Washington, Samuel H. Kress Collection, 1952.5.77
Tiepolo's 'An Allegory with Venus and Time' was probably carried out as the central decoration for a ceiling in a palace. It is designed to be seen from below, at an angle: http://bit.ly/1IEeey5
Happy birthday to Giovanni Battista Tiepolo, born on this day in 1696. In his hands, the informal oil sketch was raised to a primary art form, worthy to be collected alongside his finished paintings. Learn more and view a slideshow of works: http://met.org/1DUFlAF
Giovanni Battista Tiepolo (Italian, 1696–1770) | Allegory of the Planets and Continents | 1752