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
Energy & Green Tech
In advancing sustainable waste management and CO2 sequestration, researchers have crafted reactors that mineralize carbon dioxide with fly ash particles. This avant-garde technique is set to offer a sustainable and lasting ...
Jun 14, 2024
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60
Software
Several air taxi companies are using a NASA-developed computer software tool to predict aircraft noise and aerodynamic performance. This tool allows manufacturers working in fields related to NASA's Advanced Air Mobility ...
Apr 5, 2024
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20
Hi Tech & Innovation
The result of a new study on the intrinsic dynamics of spatio-temporal processes conducted at the MOX laboratory of the Politecnico di Milano (Department of Mathematics) by Francesco Regazzoni, Stefano Pagani, Matteo Salvador ...
Mar 6, 2024
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57
Security
Hackers are targeting industrial control systems widely used by water and sewage-treatment utilities, potentially threatening water supplies, the top U.S. cyberdefense agency said after a Pennsylvania water authority was ...
Nov 30, 2023
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Computer Sciences
In theory, quantum computers vastly outperform classical computers in terms of computing speed. For them to do so in practice, it is necessary to design more and novel high-speed algorithms, says ETH supercomputing specialist ...
May 26, 2023
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Robotics
Imagine you're enjoying a picnic by a riverbank on a windy day. A gust of wind accidentally catches your paper napkin and lands on the water's surface, quickly drifting away from you. You grab a nearby stick and carefully ...
May 24, 2023
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33
Engineering
Global warming has put a significant strain on resources, and hence, economic opportunities, military considerations, and trade. The development of Arctic shipping routes is necessary to compensate for these changes, and ...
Mar 30, 2023
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3
Engineering
When you take a trip on a plane, train or cruise ship you likely are traveling by the power of gas turbines. These are combustion engines that convert gas or liquid fuel to mechanical energy. The process involves air, fuel, ...
Mar 8, 2023
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64
Energy & Green Tech
Making the countless numbers of N95 masks that have protected millions of Americans from COVID requires a process that not only demands attention to detail but also requires lots of energy. Many of the materials in these ...
Nov 1, 2022
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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