«In a heterogeneous spread of droplet sizes, the cloud droplets are more likely to turn
into rain droplets, because they're more likely to collide,» Cantrell explains, adding that different - sized droplets fall at different speeds because of Earth's atmosphere.
Not exact matches
The New York TimesSARATOGA SPRINGS, N.Y. — Fat, cold
droplets splashed from the sky as the students struggled
into their uniforms:
rain pants, boots, mittens and hats.
Originally it was thought that the ethane condenses
into droplets, and
rains down in the frigid cold of Titan's — 290 degree Fahrenheit atmosphere.
Many clouds at mid-latitudes make
rain by freezing water
into ice crystals (which fall from the cloud then melt before they hit the ground), rather than by coalescing warm water
droplets together.
A team led by Kaveh Pahlevan at Yale University calculate that as rock vapour rose from Earth's hot, roiling surface, the magnesium oxide it contained would have condensed
into droplets and
rained back to the surface more readily than the more volatile iron oxide, which could then have mixed
into the moon - forming disc (Earth and Planetary Science Letters, DOI: 10.1016 / j.epsl.2010.10.036).
The theory is that electrified, umbrella - shaped towers can send negatively charged particles
into the air, increasing the chance that supercooled
droplets will collide with freezing nuclei, thus becoming
rain.
Then the researchers took the plants out
into the forest, mimicking the natural process by which young leaves are gradually colonized by fungi swirling in the air or contained in water
droplets when it
rains.
The exhibition features exciting collaborations, a new film based on glass shoes and a large dress suspended from the ceiling,
raining down
droplets into the gallery.
The increased number of smaller
droplets is hypothesized to hinder the formation of
rain because more smaller
droplets do not collide and coalesce
into precipitation as efficiently.
In other words, a
rain cloud would hypothetically form when conditions are right in any event, but, when there are more cosmic rays, the cloud would not
rain out until later in the day because the smaller initial
droplet size would affect how long the
droplets take to coalesce
into the size necessary for
rain to happen or something to that effect.