Air, clouds, climate - some physical basics about the atmosphere
- Veranstaltungen
- Brötchen-und-Borussia

The gases in the atmosphere and water in the form of clouds in the sky contain exciting physics. Radiation from the sun provides the energy that drives the dynamics in our atmosphere. Powerful thermodynamic processes create the harmless-looking fleecy clouds in the summer sky and can carry gliders hundreds of kilometers. With only small changes in the atmosphere, the same processes create threatening storm clouds with lightning and hail. The increase in carbon dioxide concentration generated by fossil fuels influences the energy balance in the atmosphere and thus our climate. The underlying physical phenomena are explained and demonstrated with experiments.
![3D visualisation of human neuronal tissue reconstructed by multi-scale X-ray phase contrast tomography. Neuronal cell nuclei are shown in yellow for the granule neurons in the dentate gyrus region of the hippocampus. Blood vessels are shown in red. By changing the X-ray optical magnification in the multi-scale recordings, one can zoom into regions-of-interest (red ovals). In these scans the resolution is high enough to resolve sub-structures of the nucleus, associated with different DNA packing regimes. Adapted from [6]](/storages/physik/_processed_/e/4/csm_Kolloquium_Salditt_0e30a3f090.png)





