Experiment takes ‘snapshots’ of light, stops light, uses light to change properties of matter
PITTSBURGH–Light travels at a speed of about 300,000,000 meters per second as light particles, photons, or equivalently as electromagnetic field waves. Experiments led by Hrvoje Petek, an R.K. Mellon professor in the Department of Physics and Astronomy examined ideas surrounding the origins of light, taking snapshots of light, stopping light and using it to change […]
Detecting solar neutrinos with the Borexino experiment
Credit: CC0 Public Domain Neutrinos are chargeless particles with about a mass about a millionth that of an electron that are created by the nuclear processes that occur in the Sun and other stars. These particles are often colorfully described as the ‘ghosts’ of the particle zoo because they interact so weakly with matter. A […]
Detecting solar neutrinos with the Borexino experiment
Neutrinos are chargeless particles with about a mass about a millionth that of an electron that are created by the nuclear processes that occur in the Sun and other stars. These particles are often colourfully described as the ‘ghosts’ of the particle zoo because they interact so weakly with matter. A paper published in EPJ […]
Detecting solar neutrinos with the Borexino experiment — ScienceDaily
Neutrinos are chargeless particles with about a mass about a millionth that of an electron that are created by the nuclear processes that occur in the Sun and other stars. These particles are often colourfully described as the ‘ghosts’ of the particle zoo because they interact so weakly with matter. A paper published in EPJ […]
Galileo’s famous gravity experiment holds up, even with atoms
According to legend, Galileo dropped weights off of the Leaning Tower of Pisa, showing that gravity causes objects of different masses to fall with the same acceleration. In recent years, researchers have taken to replicating this test in a way that the Italian scientist probably never envisioned — by dropping atoms. A new study describes […]
What a drum-beat experiment reveals about cultural evolution
A drum beat in the laboratory. Credit: Daniel Vegel Living organisms aren’t the only things that evolve over time. Cultural practices change, too, and in recent years social scientists have taken a keen interest in understanding this cultural evolution. Much research has focused on psychological factors among individuals, like how our visual system constrains the […]
