Radio waves, microwaves and even light itself are all made of electric and magnetic fields. The classical theory of electromagnetism was completed in the 1860s by James Clerk Maxwell. At the time, Maxwell’s theory was revolutionary, and provided a unified framework to understand electricity, magnetism and optics.
Now, new research led by LSU Department of Physics and Astronomy Assistant Professor Ivan Agullo, with colleagues from the Universidad de Valencia, Spain, advances knowledge of this theory. Their recent discoveries have been published in Physical Review Letters.
Maxwell’s theory displays a remarkable feature: it remains unaltered under the interchange of the electric and magnetic fields, when charges and currents are not present. This symmetry is called the electric-magnetic duality.
However, while electric charges exist, magnetic charges have never been observed in nature. If magnetic charges do not exist, the symmetry also cannot exist. This mystery has motivated physicists to search for magnetic charges, or magnetic monopoles. However, no one has been successful. Agullo and his colleagues may have discovered why.
Read more ~ SpaceDaily
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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
38.8256322, 33.1437783
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Title: Grey squares rotating
Technique: Drawing with Stabilo markers on printed Blender animation (16 Frames)
Fluorite
Locality: Okorusu mine, Otjiwarongo District, Namibia
Moss Green Halite
Locality: Sieroszowice Mine, Lower Silesia, Poland
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Cosmic optical illusions in Ursa Major http://bit.ly/2q59xIQ