Sentences with phrase «microscopic grains of»

The first paper, published this week in the journal Nature, relates to microscopic grains of rock detected by Cassini in the Saturn system.

The radio astronomers were searching for free - floating gas molecules in space, but nebulas also contain dust, microscopic grains of carbon and silicon.

They were surprised to find it was already full of dust — microscopic grains of most probably silicon, carbon, and aluminum.

We're used to thinking of the space between the stars as void, bereft of all but the most sparsely distributed atoms and molecules, or the occasional microscopic grain of silicon or carbon dust.

Not exact matches

This year, though, a team from Lawrence Livermore National Laboratory has developed an approach that uses a regular laser - sintering printer to control the microscopic grain structure of the metal.

Atomistic models and atomic - resolution STEM HAADF (scanning transmission electron microscopic high - angle annular dark - field) images showing three examples of segregation - induced superstructures observed at randomly - selected general grain boundaries of a nickel - bismuth (Ni - Bi) polycrystalline alloy.

In 2010, German scientists discovered another useful function of corneal nipples: they help keep pollen grains, dust particles, and other microscopic crud out of the insects» eyes.

Rather, they analyzed microscopic silicon carbide, SiC, dust grains that formed in supernovae more than 4.6 billion years ago and were trapped in meteorites as our Solar System formed from the ashes of the galaxy's previous generations of stars.

This suggests a way that very small samples (a few tens of microscopic grains) can reveal big information about the pathways and effects of long - distance airborne dust.

The sediments are made up of microscopic calcium carbonate shells and fine - grained clay and silt sediment that is washed in from the nearby European continent.

«Thin microscopic sections of dirt samples show organization of soil grains, revealing whether an earthen structure was human - built or laid down as part of a natural sedimentation process,» Kidder said.

For decades, paleontologists have puzzled over the microscopic fossils of Pseudooides, which are smaller than sand grains.

So in 1976, Greenberg hired Louis Allamandola, a recent Berkeley Ph.D. graduate in low - temperature chemistry, to re-create the kinds of reactions that might take place on microscopic icy grains thousands of light - years away.

Microscopic grains inside magnetite are capable of storing information about the planet's magnetic field, including the direction and intensity, from the time the minerals cooled and solidified.

In a fascinating set of projects we will look at the smallest scales and back in time, probing the mineralogy and composition of micron - sized grains in ancient meteorites using the most sophisticated microscopic techniques, to explore the history of volatiles and organics in planetary building blocks at the time when the Solar System was young.

Microscopic particles of stardust, known as «pre-solar grains,» have been found in meteoritic material on Earth.

When grains are properly prepared through soaking, sprouting or sour leavening, the friendly bacteria of the microscopic world do some of our digesting for us in a container, just as these same lactobacilli do their work in the first and second stomachs of the herbivores.

It's the microscopic plastic particles, small as a grain of salt, which fish mistake for food.