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Oct. 9, 2020 —科学家发现最快的speed of ...
Mar. 10, 2023 —A new ultrasound method that can measure the level of tension in human tissue -- a key indicator of disease -- has been ...
Mar. 24, 2022 —Climate change is speeding sound transmission in the oceans and the way it varies over the globe with physical properties of the oceans. Two 'acoustic hotspots' of future sound speed ...
Aug. 31, 2021 —Researchers have developed three designs for compact speaker systems that control the direction of sound more efficiently than previous models. For each speaker, the scientists were able to ...
Sep. 14, 2021 —Phononic crystals are an innovative resonant platform for sensing and understanding the volumetric properties of liquids, attracting a growing interest from researchers. Researchers propose the ...
June 10, 2021 —Acoustic waves in gases, liquids, and solids usually travel at an almost constant speed of sound. Rotons are an exception: their speed of sound changes significantly with the wavelength, it is also ...
Dec. 7, 2021 —A research team has discovered a new type of sound wave: the airborne sound wave vibrates transversely and carries both spin and orbital angular momentum like light does. The findings shattered ...
Feb. 15, 2022 —Researchers have devised a revolutionary new technique for measuring the microscopic elasticity of materials. Known as SRAS, the technology works by measuring the speed of sound across the ...
Nov. 30, 2020 —Engineers have developed an airborne method for imaging underwater objects by combining light and sound to break through the seemingly impassable barrier at the interface of air and ...
Apr. 5, 2022 —Scientists have built instruments to give humans eyes and a nose on Mars -- and now they are helping add ears as ...