Researchers are developing a way to achieve higher doses and shorter treatment times for cancer patients undergoing proton therapy.
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Researchers have developed an algorithm that creates 3D objects that follow meandering paths as they roll downhill. Their technique could be used to develop new control protocols for quantum spins and the polarization of light.
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Independent researchers have found no evidence of room-temperature superconductivity in a modified form of lead apatite known as LK99, dashing hopes of a technological breakthrough.
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The effect that nuclear spins have on certain biological processes have been observed for the first time.
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Tiny probes delivered via blood vessels measure neural activity without the need for brain surgery.
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A thermal imaging system that uses machine learning to disentangle the information contained in infrared images has been unveiled by researchers.
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The emissivity of the surface of a material is its effectiveness in emitting energy as thermal radiation. Thermal radiation is electromagnetic radiation that most commonly includes both visible radiation (light) and infrared radiation, which is not visible to human eyes. A portion of the thermal radiation from very hot objects is easily visible to the eye.
The emissivity of a surface depends on its chemical composition and geometrical structure. Quantitatively, it is the ratio of the thermal radiation from a surface to the radiation from an ideal black surface at the same temperature as given by the Stefan–Boltzmann law. (A comparison with Planck's law is used if one is concerned with particular wavelengths of thermal radiation.) The ratio varies from 0 to 1.
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The emissivity of a surface depends on its chemical composition and geometrical structure. Quantitatively, it is the ratio of the thermal radiation from a surface to the radiation from an ideal black surface at the same temperature as given by the Stefan–Boltzmann law. (A comparison with Planck's law is used if one is concerned with particular wavelengths of thermal radiation.) The ratio varies from 0 to 1.
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Black-body radiation is the thermal electromagnetic radiation within, or surrounding, a body in thermodynamic equilibrium with its environment, emitted by a black body (an idealized opaque, non-reflective body). It has a specific, continuous spectrum of wavelengths, inversely related to intensity, that depend only on the body's temperature, which is assumed, for the sake of calculations and theory, to be uniform and constant.
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Using a scaffold made from conductive silicon nanowires, researchers have developed artificial heart tissue that they say could be readily transplanted into natural tissue.
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