Tag Archive for 'Sound wave'

These craters were formed by a meteoroid impact on Mars on September 5, 2021, the first to be detected by NASA’s InSight lander; taken by NASA’s Mars Reconnaissance Orbiter, this enhanced-color image highlights the dust and soil disturbed by the impact in blue in order to make details more visible to the human eye. Image credit: NASA / JPL-Caltech / University of Arizona.

NASA’s InSight Lander Detects Seismic and Acoustic Waves from Meteoroid Impacts on Mars

Sep 20, 2022 by News Staff

The Seismic Experiment for Internal Structure (SEIS) seismometer on NASA’s InSight lander picked up vibrations and sounds from four space rocks that...

Magnified image showing adult stem cells in the process of turning into bone cells after treatment with high-frequency sound waves. Green coloring shows the presence of collagen, which the cells produce as they become bone cells. Magnification - 60x. Image credit: RMIT University.

Scientists Use Sound Waves to Turn Human Stem Cells into Bone Cells

Feb 21, 2022 by News Staff

Researchers at RMIT University have used high frequency MHz-order mechanostimulation to trigger differentiation of human mesenchymal stem cells from various...

The acousto-electric chip includes a radio-frequency amplifier, circulator and filter; SEM image shows details of the amplifier. Image credit: Bret Latter / Matt Eichenfield.

Researchers Create World’s Smallest Acoustic Amplifier

Jun 7, 2021 by News Staff

An acoustic amplifier developed by Sandia National Laboratories researchers measures 0.5 mm2 (0.0008 square inches), and is more than 10 times more effective...

Flaring, active regions of the Sun are highlighted in this image combining observations from several telescopes. High-energy X-rays from NASA’s Nuclear Spectroscopic Telescope Array (NuSTAR) are shown in blue; low-energy X-rays from Japan’s Hinode spacecraft are green; and extreme ultraviolet light from NASA’s Solar Dynamics Observatory (SDO) is yellow and red. All three telescopes captured their solar images around the same time on April 29, 2015. Image credit: NASA / JPL-Caltech / GSFC / JAXA.

Source of Sunquakes is Submerged beneath Solar Surface, Study Shows

Jan 5, 2021 by News Staff

Ultra-impulsive acoustic emission from a solar flare recently detected by NASA’s Solar Dynamics Observatory (SDO) indicated submersion of its source...

The Unruh effect predicts a thermal response for an accelerated detector moving through the vacuum. Gooding et al. propose an interferometric scheme to observe an analogue of the circular Unruh effect using a localized laser coupled to a Bose-Einstein condensate. Image credit: University of Nottingham.

Physicists Propose New Method for Observing Hypothetical Unruh Effect

Nov 23, 2020 by News Staff

The Unruh effect was described by Stephen Fulling in 1973, Paul Davies in 1975, and William Unruh in 1976. Sometimes called the Fulling-Davies-Unruh effect,...

Trachenko et al. show that a combination of two dimensionless fundamental constants results in a new dimensionless constant that provides the upper bound for the speed of sound in condensed phases. Image credit: Gerd Altmann.

Physicists Find Upper Limit for Speed of Sound in Solids and Liquids

Oct 14, 2020 by News Staff

Using two dimensionless fundamental constants, an international team of physicists has calculated the fastest possible speed of sound in condensed phases...