Antiprism & Astrahedra Lights by Andreas Hopf and Axel Nordin
by Harry / April 29, 2013
Andreas Hopf and Axel Nordin explore the geometry of light with their new pendants Antiprism and Astrahedra.


(Click the images below for full sized images)

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Antiprisms - geometry of light

"An antiprism is a convex polyhedron; a form consisting of two parallel copies of a regular polygon, connected by an alternating band of triangles." explain Hopf & Nordin.

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"The lights are folded from a single perforated titanium-ceramic (TiN) coated sheet of stainless steel. The folds provide stability and, by their perforations, trace the form with light into space."

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"The angular geometry of antiprisms allows high-performance LEDs to be mounted invisibly and glare-free, directing their light upwards to be reflected by the matte white inner top face. The luminous flux is optimised and shadow casting is much reduced. The LED's heat is dissipated by one triangle each and no extra heat sinks are required."

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"The astronomer and optician Johannes Kepler described antiprisms for the first time. Like the Renaissance artists Luca Pacioli or Albrecht Dürer, Kepler studied polyhedral geometry, dedicating the first volume of his opus magnum Harmonices Mundi to them. The seven-sided (heptagonal) antiprism is exceptional: it cannot be constructed with compass and ruler, proven by Carl Friedrich Gauß in Disquisitiones Arithmeticae."

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Astrahedra - quantum physics for the living room

"Astrahedra are an infinite sequence of lights that visualise the interstellar void, home of Dark Matter and Energy. An astrahedron is a fractional splinter of the universe."

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"Tabbed stainless steel elements are folded and joined invisibly along their inner edges with Japanese spring-steel clips and adhesive. The perforated folds, illuminated from within, trace the true distance between astronomic objects - the lights' corners. Depending on the desired illumination, certain elements are made from translucent plastics."

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"The interstellar void is not empty; it is filled with radiation, dust, gas and the unseen that provides structure to the Universe: Dark Matter and Energy. Their existence is derived from the unexpected orbital velocities of stars at galaxies' outer rims."

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"After the first light in the universe was captured by ESA's Planck satellite 2013, we know that the universe contains 95,1% Dark Matter and Energy and only 4,9% atoms. The stuff that also we are made from is 13,82 billion years old." More at Hopf Nordin.

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