28 Critical Reflections: random 8 to 14

'Abstract' is a word which is now most frequently used to express only the type of the outer form of a work of art; this makes it difficult to use it in relation to the spiritual vitality or inner life which is the real sculpture. Abstract sculptural qualities are found in good sculpture of all time, but it is significant that contemporary sculpture and painting have become abstract in thought and concept. As the sculptural idea is in itself unfettered and unlimited and can choose its own forms, the vital concept selects the form and substance of its expression quite unconsciously.[7]

Terrific contrast between the strong, tactile sculptures and the exuberance of the foliage and flowers. Apart from one or two pieces marked Do not Touch, you can touch and stroke the sculptures in the garden: take advantage, it's quite an experience.[8]

This can be explained by the existence of microfacets. We assume that surfaces that are not perfectly smooth are composed of many very tiny facets, each of which is a perfect specular reflector. These microfacets have normals that are distributed about the normal of the approximating smooth surface. The degree to which microfacet normals differ from the smooth surface normal is determined by the roughness of the surface. At points on the object where the smooth normal is close to the half-angle direction, many of the microfacets point in the half-angle direction and so the specular highlight is bright. As one moves away from the center of the highlight, the smooth normal and the half-angle direction get farther apart; the number of microfacets oriented in the half-angle direction falls, and so the intensity of the highlight falls off to zero.[6]

River Form reminds the viewer of a pebble that has been gently shaped by the currents of a churning river. The piece is a contemplation of water, space and the sky. The artistís interest in exploring the void and the interaction between positive and negative space is evident in the cutaway interior which gives the impression of having evolved over time.[1]

Even admitting that what happens in a camera obscura is something 'similar' to the phenomenon of the specular reflection (which is not questionable), what changes is the fact that an image remains traced somewhere, and any successive discussion about its iconic properties deals with the imprinted image and not with the process itself.[3]

Even admitting that what happens in a camera obscura is something 'similar' to the phenomenon of the specular reflection (which is not questionable), what changes is the fact that an image remains traced somewhere, and any successive discussion about its iconic properties deals with the imprinted image and not with the process itself.[3]

Specular reflection could be called a sort of congruence, insofar as congruences are a type of equality, thus establishing a bi-univocal relation founded on the properties of being reflexive, symmetrical and transitive. In this sense specular reflection is equality and not similitude.[3]

28 Critical Reflections random 15 to 21
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Sources

[1] http://www.neworleanspast.com/art/id62.html

[2] Ken MacLeod, Reflective Surfaces, New Scientist, 2009.

[3] Umberto Eco, A Theory of Semiotics, Indiana University Press, 1979.

[4] Clive Fencott, Reflections on seeing River Form in Barbra Hepworth's garden in St. Ives.

[5] http://www.flickr.com/photos/nigelhomer/316548379/

[6] http://en.wikipedia.org/wiki/Specular_highlight

[7] http://www.barbarahepworth.org.uk/texts/

[8] tripadvisor.co.uk