Many technical processes using finely divided materials require that the particle size be as uniform as possible.
Among the most finely divided materials known, carbon blacks vary widely in particle size depending on the process by which they are made.
Total reflection of light which imparts whiteness to flowers, birds' feathers, mammalian hair, and the wings of certain butterflies often results from the separation of finely divided materials by minute air spaces.
Characterization of the structure of ultra-small (colloids and molecular clusters), and/or amorphous and highly divided materials down to the molecular scale.
Provide time at the end of class for groups to outline their six-minute news segment and decide how to divide material so that each student has material to cover, and so that all areas researched are covered.
DVD-burning software makes it relatively easy to divide material up and create thumbnails and menus in your choice of fonts and colors; if you take considerable time to edit your video, it will look even better.
But who wants to know that resource productivity is equal to the level of GDP divided by material consumption?
The gaseous by-products of incomplete combustion, along with finely divided particulate material called fly ash, are carried along in the incinerator airstream.
To render the music more accessible to his guests, Kassar divided the material into sections — urban, rural, religious, etc. Mori was drawn to a rhythmic form called bashraf; others found an affinity with the breathing of Koranic music, drumming from the north of Egypt, Sufi music from the south.
Trawl samples were separately washed into a sieve tower (five Glenammer Engineering Ltd sieves, with 0.05 cm, 0.15 cm, 0.5 cm, 1.5 cm, and 5 cm square apertures) that divided the material into the following size classes: 0.05 0.15 cm, 0.15 0.5 cm, 0.5 1.5 cm, 1.5 5 cm, and >5 cm.
