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Category/Subcategory: Natural Sciences/Physics

Why is Earth's magnetic shield weakening? - Space

Author: Euronews Knowledge
Earth's magnetosphere is an invisible shield, protecting our planet from harmful solar radiation. Made by euronews, the most watched news channel in Europe, euronews knowledge gives YouTubers amazing access into the scient ... more

Views: 565

SPH simulation of a particle impact on a ductile target

Author: Christian Nutto
The sequence shows an impacting body on a ductile target made of Al6061-T1. The impacting body is assumed to be ideally hard. The impact velocity is $45 \mathrm{m/s}$ and is tilted $51^°$ from the horizontal axis. The spacing of ... more

Views: 572

Animation of a setup for the synthesis of colloidal nanoparticles

Author: Christian Klinke
Animation of a setup for the synthesis of colloidal nanoparticles, as it has been used for the synthesis of cadmium selenide nanoparticles e.g. in M. Meyns et al. "Shape evolution of CdSe nanoparticles controlled by halogen compou ... more

Views: 983

The future in a new light - Futuris

Author: Euronews Knowledge
From the Sun, the Moon and flames, to ultra-modern semiconductors, human history is inherently bound to light. In this special edition of Futuris, we meet scientists and engineers who are making our futures brighter. Made by eu ... more

Views: 547

Brittle fracture in three point bending test

Author: Claas Bierwisch
Simulation of a three point bending test of a silicon crystal. The upper cylinder is pushed downward in a path-controlled trajectory. On contact, the induced stresses on the upper and lower surface are discernible. Tensile stresse ... more

Views: 912

Chromospheric heating - Movie 1

Author: Michal Sobotka
Time series of Ca II line-center images (69 minutes, 80 frames) and the region of interest.

Views: 341

Wave propagation in a sunspot's atmosphere

Author: Johannes Löhner-Böttcher
A sunspot observation (NOAA11823) is shown. First the sunspot (HMI continuum intensity) rotates across the solar disk. Then the region is zoomed in and changes to the high-resolution observation of the Dunn Solar Telescope. Then t ... more

Views: 702

Simulation of a tensile test using smoothed particle hydrodynamics (SPH)

Author: Christian Nutto
The video shows the simulation of a tensile test. The tensile specimen is shown in a half-section. The color scheme represents the plastic strain occurring during the strain. The end of the videos shows a stress-strain diagramm o ... more

Views: 649

Making Fire From Water - Futuris

Author: Euronews Knowledge
A euronews futuris feature from October 30, 2013. Made by euronews, the most watched news channel in Europe. euronews knowledge brings you a fresh mix of the world's most interesting know-hows, directly from space and sci-te ... more

Views: 605

Angles of repose observed in heap (de-)construction

Author: Claas Bierwisch
In a Discrete Element Method (DEM) simulation angles of repose are analyzed which reveal static properties of a granular material. The theoretical maximum angle is related to the internal angle of friction of the material, $\phi = ... more

Views: 600