Displaying similar documents to “A geometrical description of visual sensation”

Geometrical Patterns in the Pre-classical Greek Area. Prospecting the Borderland between Decoration, Art, and Structural Inquiry

Jens Høyrup (2000)

Revue d'histoire des mathématiques

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Many general histories of mathematics mention prehistoric “geometric” decorations along with counting and tally-sticks as the earliest beginnings of mathematics, insinuating thus (without making it too explicit) that a direct line of development links such decorations to mathematical geometry. The article confronts this persuasion with a particular historical case: the changing character of geometrical decorations in the later Greek area from the Middle Neolithic through the first millennium...

Effects of substrate and graphene surface roughness on graphene sheet plasmons

Keenan Lyon, Z.L. Miškovic (2014)

Nanoscale Systems: Mathematical Modeling, Theory and Applications

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We study the effects of roughness in a graphene layer that lies on a substrate with rough surface on the dynamic response of such a structure. Using an analytical expression for the dielectric function of flat graphene in the optical limit allows us to tackle the effects of roughness on the sheet plasmon in graphene. We first formulate a stochastic eigenvalue problem for the plasmon dispersion in terms of the roughness parameters that include both the auto– and the cross–correlation...