minute particles
21Dust storm — For the fictional character, see Dust Storm (Transformers). For other uses, see Sandstorm (disambiguation). Part of the Nature series on Weather   Calendar seasons …
22Atomism — (from ancient Greek atomos, meaning uncuttable ) is a natural philosophy that developed in several ancient traditions. The atomists theorized that the natural world consists of two fundamental parts: indivisible atoms and empty void. According to …
23colloid — /kol oyd/, n. 1. Physical Chem. a substance made up of a system of particles with linear dimensions in the range of about 10 7 to 5 × 10 5 cm dispersed in a continuous gaseous, liquid, or solid medium whose properties depend on the large specific …
24Volcanic ash — consists of small tephra, which are bits of pulverized rock and glass created by volcanic eruptions,United States Geological Survey. [http://volcanoes.usgs.gov/Hazards/What/Tephra/tephra.html Tephra: Volcanic Rock and Glass Fragments.] Retrieved… …
25Tyndall effect — The Tyndall effect is an effect of light scattering by colloidal particles or particles in suspension. It is named after the 19th century Irish scientist John Tyndall. It is similar to Rayleigh scattering, in that the intensity of the scattered… …
26Universe — For other uses, see Universe (disambiguation). Physical cosmology …
27Corpuscular — Cor*pus cu*lar (k?r p?s k? l?r), a. [Cf. F. corpusculaire.] Pertaining to, or composed of, corpuscles, or small particles. [1913 Webster] {Corpuscular philosophy}, that which attempts to account for the phenomena of nature, by the motion, figure …
28Corpuscular philosophy — Corpuscular Cor*pus cu*lar (k?r p?s k? l?r), a. [Cf. F. corpusculaire.] Pertaining to, or composed of, corpuscles, or small particles. [1913 Webster] {Corpuscular philosophy}, that which attempts to account for the phenomena of nature, by the… …
29Corpuscular theory — Corpuscular Cor*pus cu*lar (k?r p?s k? l?r), a. [Cf. F. corpusculaire.] Pertaining to, or composed of, corpuscles, or small particles. [1913 Webster] {Corpuscular philosophy}, that which attempts to account for the phenomena of nature, by the… …
30statistical mechanics — Physics, Chem. (used with a sing. v.) the science that deals with average properties of the molecules, atoms, or elementary particles in random motion in a system of many such particles and relates these properties to the thermodynamic and other… …
