Paleoclimatology
Enviado por Elisabeth Schaber el
Modern global climate data started in 1880. We can discover the climate of yesterday in many different ways.
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Energy flux of waves with dodecahedral symmetry on the sphere
Enviado por Nils Berglund el
Solution of the wave equation on a sphere. Reflecting obstacles have been placed around the vertices of a regular dodecahedron. The initial state is a set of circular waves concentrated at the centers of the faces of the dodecahedron. The colors and radial coordinate represent the energy flux.
Richardson's forecast factory from 1922
Enviado por IMAGINARY el
Decades before the first supercomputers, mathematician Lewis Fry Richardson dreamed of a sort of factory for global climate modeling.
Visualization of 4-dimensional regular tilings
Enviado por Jean-François Bigot el
This video shows the use of Tak4D to illustrate tilings in a 4 dimensional space. Three regular tilings are made, the first with hypercubes, the second with hexadecachorons and the third with icositetrachorons.
Tak4D is a tool for viewing and manipulating objects in a 4-dimensional space. It allows to apprehend 4D objects through 4 3D views.
These views can be projections or sections.
To access the tool: https://www.raktres.net/tak4d/
Waves with icosahedral symmetry on the sphere
Enviado por Nils Berglund el
Solution of the wave equation on a sphere. Reflecting obstacles have been placed around the vertices of a regular icosahedron. The initial state is a set of circular waves concentrated at the centers of the faces of the icosahedron.
Wave equation
Enviado por Nils Berglund el
Simulations of the wave equation
Waves with dodecahedral symmetry on the sphere
Enviado por Nils Berglund el
Solution of the wave equation on a sphere. Reflecting obstacles have been placed around the vertices of a regular dodecahedron. The initial state is a set of circular waves concentrated at the centers of the faces of the dodecahedron.
Ocean Acidification
Enviado por IMAGINARY el
CO2 is a chemical that can exist as a gas in the atmosphere but also dissolves into water (as in sparkling water), into rocks, or inside living beings. Oceans store about ⅓ of the CO2 on the planet. This is due to a chemical process known as buffering.
Tipping Point
Enviado por IMAGINARY el
In complex systems, a tipping point is where a small change in the system makes big differences in its evolution. Often, these changes are irreversible, or it takes much more effort to reverse than was necessary for the triggering change.
Heuliad
Visualization of a family of sequences of points in a toric sub-lattice of the ring of Gaussian integers