It is well established that the SARS-CoV-2 virus responsible for the COVID-19 disease is transmitted via respiratory droplets that infected people eject when they cough, sneeze or talk. Consequently, much research targets ...
General Physics
Jun 30, 2020
0
876
Face masks reduce the risk of spreading large COVID-linked droplets when speaking or coughing by up to 99.9 percent, according to a lab experiment with mechanical mannequins and human subjects, researchers said Wednesday.
General Physics
Dec 23, 2020
21
6323
(Phys.org)—There are many cool videos showing the Leidenfrost effect, which occurs when water droplets levitate and skid around on top of a very hot surface, rather than immediately evaporating like they do at temperatures ...
Transistors, those tiny electrical switches that process signals and data, are the brain power behind every electronic device – from laptops and smartphones to your digital thermostat. As they continue to shrink in size, ...
Engineering
Nov 3, 2017
0
3467
Public health advice for avoiding respiratory illness is largely unchanged since the Spanish flu of 1918, one of history's deadliest pandemics. Keep a safe distance from other people. Wash your hands frequently with soap ...
Soft Matter
May 11, 2020
6
2895
Supercooling, a state where liquids do not solidify even below their normal freezing point, still puzzles scientists today. A good example of this phenomenon is found everyday in meteorology: clouds in high altitude are an ...
Soft Matter
Apr 21, 2010
10
1
Many people wear masks in public to slow the spread of COVID-19, as recommended by the Centers for Disease Control and Prevention (CDC). However, masks with exhalation valves do not slow the spread of the disease, and now, ...
Soft Matter
Nov 10, 2020
3
1909
(Phys.org)—Biomimicry is the term given to using nature as an inspiration for sustainable technology ideas, and a young company has joined the biomimicry brigade with its prototype self filling water bottle, which mimics ...
Why doesn't a spider's web sag in the wind or catapult flies back out like a trampoline? The answer, according to new research by an international team of scientists, lies in the physics behind a 'hybrid' material produced ...
Materials Science
May 16, 2016
4
2873
Self-cleaning walls, counter tops, fabrics, even micro-robots that can walk on water -- all those things and more could be closer to reality because of research recently completed by scientists at the University of Nebraska-Lincoln ...
Nanomaterials
May 4, 2009
0
0
