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Equations help predict the behavior of water in rivers

River dikes are small dams made of earth that are used to hold in the water of the course of a river, without affecting the course too much. However, when the water exceeds a certain level due to flooding, the dike breaks, ...

When kinetics and thermodynamics should play together

The formation of calcium carbonate (CaCO3) in water has ramifications for everything from food and energy production to human health and the availability of drinkable water. But in the context of today's environment, simply ...

Medical groups warn climate change is a 'health emergency'

As Democratic presidential hopefuls prepare for their first 2020 primary debate this week, 74 medical and public health groups aligned on Monday to push for a series of consensus commitments to combat climate change, bluntly ...

Federal research significant in environmental rule-making

Federally-sponsored science plays a more significant role in bringing together stakeholders and facilitating environmental governance debates than all other types of research, according to an international team of researchers.

Crack propagation is asymmetric in polar materials

The ICN2 Oxide Nanophysics Group, led by ICREA Prof. Gustau Catalán, has published in Physical Review Letters how, due to flexoelectricity, cracks in ferroelectrics (switchable polar materials) propagate more easily in the ...

Damaging Sichuan earthquakes linked to fracking operations

Two moderate-sized earthquakes that struck the southern Sichuan Province of China last December and January were probably caused by nearby fracking operations, according to a new study published in Seismological Research ...

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Fracture

A fracture is the (local) separation of an object or material into two, or more, pieces under the action of stress.

The word fracture is often applied to bones of living creatures (that is, a bone fracture), or to crystals or crystalline materials, such as gemstones or metal. Sometimes, in crystalline materials, individual crystals fracture without the body actually separating into two or more pieces. Depending on the substance which is fractured, a fracture reduces strength (most substances) or inhibits transmission of light (optical crystals).

A detailed understanding of how fracture occurs in materials may be assisted by the study of fracture mechanics.

This text uses material from Wikipedia, licensed under CC BY-SA