Hannahhaifisch - HH

Galena and Fluorite - Blackdene Mine, Ireshopeburn, Weardale, Co. Durham, England

Adjustable Wood Lamp ‘Goldberg’

The adjustable 'Goldberg’ lamp by Atelier Akerboom is a handmade wooden lamp. By adjusting the 31 openings of the lamp you can control how much light it gives out in any direction. The lamp can be used as a hanging (pendant) lamp or as table or floor lamp. The lamp is available in different colors (see information sheet) and in two sizes (30cm or 50cm diameter).

This special design is named after Michael Goldberg (1902-1990) who described the Goldberg polyhedron – a convex polyhedron made from hexagons and pentagons – first in 1937.

https://www.etsy.com/de/listing/267492092/adjustable-lamp-goldberg?ref=shop_home_active_2

David Spriggs, Dark Matter. 

The full rotation of the Moon as seen by NASA’s Lunar Reconnaissance Orbiter.

Stretching SpaceTime

According to general relativity, the sun’s mass makes an imprint on the fabric of spacetime that keeps the planets in orbit. A neutron star leaves a greater mark. But a black hole is so dense that it creates a pit deep enough to prevent light from escaping.

Image credit: James Provost  

two patterns

TRAPPIST-1 Planets - Flyaround Animation

Credit: NASA/Spitzer

170223

A method to engineer crystals with a large fraction of reactive facets

Versatile superstructures composed of nanoparticles have recently been prepared using various disassembly methods. However, little information is known on how the structural disassembly influences the catalytic performance of the materials. Scientia Professor Rose Amal, Vice-Chancellor’s Research Fellow Hamid Arandiyan and a group from the Particles and Catalysis Research Group from the University of New South Wales (UNSW) School of Chemical Engineering have had their research address this issue published in Nature Communications.

The research team led by Dr Jason Scott and Prof Sean Smith in collaboration with Curtin University and Beijing University of Technology has developed a method that allows them to engineer crystals with a large fraction of reactive facets. An ordered mesostructured La0.6Sr0.4MnO3 (LSMO) perovskite catalyst was disassembled using a unique fragmentation strategy, whereby the newly-exposed (001) reactive faces at each fracture were more reactive towards methane oxidation than the regular (i.e. before disassembly)

It is of significant interest to use methane as an alternative fuel to coal and oil due to its high hydrogen to carbon ratio which provides comparatively lower greenhouse gas emissions. Commercial catalysts for methane combustion contain precious metals (e.g. Pt and Pd) which are of high cost and poor thermal stability (caused by agglomeration of the metal deposits). Using perovskite-type catalysts to replace noble metal supported catalysts for methane oxidation has attracted recent attention due to their excellent thermal stability. In their recently published article, the research team describes a simple fragmentation method to synthesise a novel three-dimensional hexapod mesostructured LSMO perovskite.

Read more.

Famous Mathematicians