Related topics: galaxies · model

Galaxy clusters caught in a first kiss

For the first time, astronomers have found two giant clusters of galaxies that are just about to collide. This observation can be seen as a missing 'piece of the puzzle' in our understanding of the formation of structure ...

How to bend waves to arrive at the right place

Waves do not always spread uniformly into all directions, but can form a remarkable "branched flow." At TU Wien (Vienna) a method has now been developed to control this phenomenon.

Simulating Red Sea water exchanges

Powerful computer simulations are revealing new insights into water exchanges between the Red Sea and the Gulf of Aden.

NEEMO: Testing space gear under the sea

NASA's Extreme Environment Mission Operations takes place more than 18 meters below the surface of the Atlantic Ocean. For nine days, astronauts, engineers, and scientists live and work underwater, testing new technologies ...

Climate change enhances carbon dioxide flux from lakes

Boreal lakes play a significant role in global carbon cycling. Small and shallow lakes are abundant in northern areas, and they are often biologically active because of the loading of organic matter from the catchments. As ...

Using waves to move droplets

Controlling individual droplets leads to more efficient self-cleaning surfaces and lab-on-a-chip implementations. University of Groningen professor Patrick Onck and colleagues from Eindhoven University of Technology have ...

Benchmarks to better catch the sun

Simulations unveil efficiency targets and design rules to maximize the conversion of light into electricity using organic solar cells.

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Simulation is the imitation of some real thing, state of affairs, or process. The act of simulating something generally entails representing certain key characteristics or behaviours of a selected physical or abstract system.

Simulation is used in many contexts, including the modeling of natural systems or human systems in order to gain insight into their functioning. Other contexts include simulation of technology for performance optimization, safety engineering, testing, training and education. Simulation can be used to show the eventual real effects of alternative conditions and courses of action.

Key issues in simulation include acquisition of valid source information about the relevent selection of key characteristics and behaviours, the use of simplifying approximations and assumptions within the simulation, and fidelity and validity of the simulation outcomes.

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