Turbine is a rotary mechanical device that extracts energy from a fluid flow and converts it into useful work. The work produced can be used for generating electrical power when combined with a generator. A turbine is a turbomachine with at least one moving part called a rotor assembly, which is a shaft or drum with blades attached. Moving fluid acts on the blades so that they move and impart rotational energy to the rotor. Early turbine examples are windmills and waterwheels.
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A new and highly efficient way of detecting the chirality or “handedness” of molecules using tailored laser fields could improve drug development in medicine.
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A miniature battery made from a chain of nanodroplets could be used to power implantable devices.
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A new, streamlined method of “seeing” molecular vibrations could have applications in real-time gas sensing, medical imaging, astronomical surveys and even quantum computing.
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A new nanoscale device based on stacks of two-dimensional materials produces a stream of chiral single photons and could be used in secure quantum communications.
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A compressor is a mechanical device that increases the pressure of a gas by reducing its volume. An air compressor is a specific type of gas compressor. Compressors are similar to pumps: both increase the pressure on a fluid and both can transport the fluid through a pipe. The main distinction is that the focus of a compressor is to change the density or volume of the fluid, which is mostly only achievable on gases. Gases are compressible, while liquids are relatively incompressible, so compressors are rarely used for liquids. The main action of a pump is to pressurize and transport liquids.
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Pressurised bubbles trapped deep inside the ice of tidewater glaciers play an important role in how meltwater is released by these giant structures.
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Microplastic fibres travel much further in the air than spherical beads. Study also shows oceans are a major source of particles in the atmosphere.
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Many complex systems relax slowly towards equilibrium after a perturbation, without ever reaching it. Experiments with crumpled sheets now show that relaxation involves avalanches of localized instabilities, whose slow-down leads to logarithmic aging.
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More than 500 free-floating "rogue planets" – including 40 extra-bizarre planets in binary pairs – have been discovered wandering through the Orion Nebula thanks to new observations by the JWST.
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NASA launches Psyche mission to understand how planets and other bodies separated into layers – including cores, mantles and crusts.
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