Sentences with phrase «certain types of particles»

Not exact matches

For certain types of beams, waves can scatter forward off of a particle, pushing the particle back toward the source of the beam due to the law of conservation of momentum.

No one knows for certain what the fibrils are — whether they are the agents of the disease, a type of subviral particle, as some researchers suggest, or are a product of the disease.

In the Universe, cosmic ray particles are accelerated by galaxy clusters, supernovae, binary stars, pulsars and certain types of supermassive black holes.

A new study shows that certain requirements for the lasers used in an emerging type of small - area particle accelerator can be significantly relaxed.

He studied the phenomenon in the context of electrons moving through impure materials (electrons behave as both particles and waves), but under certain circumstances it can happen with other types of waves as well.

Recent modeling along with previously published results from NASA's MESSENGER spacecraft — short for Mercury Surface, Space Environment, Geochemistry and Ranging, a mission that observed Mercury from 2011 to 2015 — has shed new light on how certain types of comets influence the lopsided bombardment of Mercury's surface by tiny dust particles called micrometeoroids.

This approach can yield a variety of structures, including ones with the same type of particle at each vertex (b), arrangements with particles placed only on certain vertices (c), and structures with different particles placed strategically on different vertices (d).

«Cleaning» parasites or fouling organisms from the body of many cooperating fish, or removal of undesired food particles by certain small and colorful shrimps has been known for nearly 60 years, but never has a hermit crab been documented to engage in such type of ecological association.

There are two main theoretical models, one based on small magnetite particles that may reorient in an external magnetic field and the other based on the idea that upon photo excitation a certain type of molecules in the eye of a bird support a radical pair formed by two electrons which evolve under the joint action of the Zeeman interaction with the external magnetic field and the hyperfine interaction with the supporting molecule.

The team obtained not simply nanoparticles that can bind to certain types of cells, but particles that look for target cells when both of two different conditions are met, or when two different molecules are present or absent.

And asbestos occur naturally in certain types of rock, and as rock it's not a hazard - unless the rock is pulverized and humans breath these particles of asbestos.

So, if we know a certain type of coal plant in southern Pennsylvania, for example, emits some distribution of particle sizes, then how is that distribution used to determine health consequences?

(Yonhap) A recent study published in the Public Library of Science (PLOS) found a positive correlation between certain types of air pollution (fine dust particles and ozone) and both suicide and depression, Korea Bizwire reported Monday.