Tree physics limits height and leaf size, study shows

(Phys.org)—Why are the leaves on the tallest trees all about the same size, and why aren't those tall trees even taller? It all has to do with basic scientific principles at work in nature, according to researchers at Harvard ...

Solar variability and terrestrial climate

(Phys.org)—In the galactic scheme of things, the Sun is a remarkably constant star. While some stars exhibit dramatic pulsations, wildly yo-yoing in size and brightness, and sometimes even exploding, the luminosity of ...

Bubble study could improve industrial splash control

(Phys.org)—For the first time, scientists witnessed the details of the full, ultrafast process of liquid droplets evolving into a bubble when they strike a surface. Their research determined that surface wetness affects ...

Go with the flow in flood prediction

Floods have once again wreaked havoc across the country and climate scientists and meteorologists suggest that the problem is only going to get worse with wetter winters and rivers bursting their banks becoming the norm. ...

Mosquitos fail at flight in heavy fog

Mosquitos have the remarkable ability to fly in clear skies as well as in rain, shrugging off impacts from raindrops more than 50 times their body mass. But just like modern aircraft, mosquitos also are grounded when the ...

New model reveals how huddling penguins share heat fairly

Penguins that face the bitter cold and icy winds of Antarctica often huddle together in large groups for warmth during storms. Mathematicians at the University of California, Merced created a model of penguin huddles that ...

Probing the mystery of the Venus fly trap's botanical bite

Plants lack muscles, yet in only a tenth of a second, the meat-eating Venus fly trap hydrodynamically snaps its leaves shut to trap an insect meal. This astonishingly rapid display of botanical movement has long fascinated ...

What's behind the success of the soccer 'Knuckleball'

What makes soccer star Cristiano Ronaldo's "knuckleball" shot so unpredictable and difficult to stop? At the American Physical Society's (APS) Division of Fluid Dynamics (DFD) meeting, November 18 – 20, 2012, in San Diego, ...

page 20 from 27