particle


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particle

 [pahr´tĭ-k'l]
an extremely small mass of material.
alpha p's see alpha particles.
beta p's see beta particles.
Dane particle an intact hepatitis B virion.
elementary particle any of the subatomic particles, including electrons, protons, neutrons, positrons, neutrinos, and muons.

par·ti·cle

(par'ti-kĕl),
1. A small piece or portion of anything.
2. An elementary particle such as a proton or electron.
[L. particula, dim. of pars, part]

par·ti·cle

(pahr'ti-kĕl)
1. A small piece or portion of anything.
2. An elementary particle such as a proton or electron.
[L. particula, dim. of pars, part]

par·ti·cle

(pahr'ti-kĕl)
1. A small piece or portion of anything.
2. An elementary particle such as a proton or electron.
[L. particula, dim. of pars, part]
References in periodicals archive ?
where [r.sub.p] is the particle radius, [[epsilon].sub.m] is the permittivity of the suspending medium, [nabla] is the Del vector (gradient) operator, E is the electric field incorporating additional fields due to particle interactions, and Re [K(w)] is the real part of the Clausius-Mossotti factor, which is given by
To avoid dealing with these issues, every time a new particle system is required, Particle System Interfaces have been developed to assist clients with creating particle systems.
In this study, two batches of the same compound--from different suppliers and with quite different particle characteristics--were compared with regard to particle size and dissolution properties.
High-purity (99.9%) submicron aluminas and calcined aluminas classified to narrow particle size ranges.
2002a), suggesting an alternative and/or a complementary explanation for the extrapulmonary effects of particles.
"We didn't know how the particles would survive during capture."
Now, Manchaca-Rocha hopes that high-energy particles called muons (MEW-ons) will help pinpoint concealed chambers.
The basic thing we are trying to understand is why some particles have weight and some don't.
Not only is the tragic toll of fine particle pollution well-documented, it's also no secret what the biggest stationary sources of the deadly emissions are: coal-fired power plants.
SIMION 3D calculates the charged particle's trajectory using a time-adaptive, 4th order Runge-Kutta algorithm to solve the equation of motion in three dimensions.
It goes back more than 50 years to production of car black containing nanoparticles, the small particles that arise in the miniaturization of any material, said Annabelle Hett, risk specialist for Swiss Re's chief underwriting office in Zurich.
The recording layer is a mixture of 80% magnetic particle and 20% binder materials.

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