University of Maryland geophysicists analyzed thousands of recordings of seismic waves, sound waves traveling through the Earth, to identify echoes from the boundary between Earth's molten core and the solid mantle layer ...
Earth Sciences
Jun 11, 2020
26
21679
Echoes in gravitational wave signals suggest that the event horizon of a black hole may be more complicated than scientists currently think.
Astronomy
Jan 22, 2020
27
6343
The scientific collaborations LIGO and Virgo have detected gravitational waves from the fusion of two black holes, inaugurating a new era in the study of the cosmos. But what if those ripples of space-time were not produced ...
Astronomy
Jun 12, 2018
28
2209
(Phys.org) —Physicists have reproduced a pattern resembling the cosmic microwave background radiation in a laboratory simulation of the Big Bang, using ultracold cesium atoms in a vacuum chamber at the University of Chicago.
General Physics
Aug 29, 2013
3
0
It takes just minutes for a room service attendant to respond to a text message asking for a soda, bringing the Diet Coke on a tray with a glass of ice and lime wedges, no need for the modern hassle of placing a phone call.
Consumer & Gadgets
Jan 10, 2018
0
10
The researchers discovered that a rainforest vine, pollinated by bats, has evolved dish-shaped leaves with such conspicuous echoes that nectar-feeding bats can find its flowers twice as fast by echolocation. The study is ...
Plants & Animals
Jul 28, 2011
4
0
They can't tell fortunes and they're useless with the stock market but bats are quite skilled at predicting one thing: where to find dinner.
Plants & Animals
Nov 2, 2020
1
1432
In a multidisciplinary project, researchers at the Georgia Institute of Technology and Georgia Tech-Lorraine used terahertz imaging and signal processing techniques to look beneath the corroded surface of a 16th-century lead ...
Archaeology
Apr 25, 2022
0
248
Microphones, from those in smartphones to hearing aids, are built specifically to hear the human voice—humans can't hear at levels higher than 20 kHz, and microphones max out at around 24 kHz, meaning that microphones only ...
Engineering
Jun 23, 2017
8
734
Imagine a loudspeaker is placed in a room with a few microphones. When the loudspeaker emits a sound impulse, the microphones receive several delayed responses as the sound reverberates from each wall in the room. These first-order ...
Mathematics
Feb 6, 2020
0
7
