Scientists design method to lessen reliance on air conditioning
Scientists say they have found a way to cool buildings that will reduce dependence on energy-hungry air conditioners.
Jul 9, 2024
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23
Engineering
Scientists say they have found a way to cool buildings that will reduce dependence on energy-hungry air conditioners.
Jul 9, 2024
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23
Engineering
Advances in 3D printing have enabled many applications across a variety of disciplines, including medicine, manufacturing, and energy. A range of different materials can be used to print both simple foundations and fine details, ...
Jul 15, 2024
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9
Engineering
A new study provides evidence supporting the integration of hands-on projects and interdisciplinary teamwork in engineering curricula, promoting deeper understanding and application of theoretical concepts, potentially influencing ...
Jul 17, 2024
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In physics, a fluid is a substance that continually deforms (flows) under an applied shear stress, no matter how small. Fluids are a subset of the phases of matter and include liquids, gases, plasmas and, to some extent, plastic solids.
In common usage, "fluid" is often used as a synonym for "liquid", with no implication that gas could also be present. For example, "brake fluid" is hydraulic oil and will not perform its required function if there is gas in it. This colloquial usage of the term is also common in medicine and in nutrition ("take plenty of fluids").
Liquids form a free surface (that is, a surface not created by the container) while gases do not. The distinction between solids and fluid is not entirely obvious. The distinction is made by evaluating the viscosity of the substance. Silly Putty can be considered to behave like a solid or a fluid, depending on the time period over which it is observed. It is best described as a viscoelastic fluid. There are many examples of substances proving difficult to classify. A particularly interesting one is pitch, as demonstrated in the pitch drop experiment currently running at the University of Queensland.
This text uses material from Wikipedia, licensed under CC BY-SA