A powder is a dry, bulk solid composed of many very fine particles that may flow freely when shaken or tilted. Powders are a special sub-class of granular materials , although the terms powder and granular are sometimes used to distinguish separate classes of material. In particular, powders refer to those granular materials that have the finer grain sizes, and that therefore have a greater tendency to form clumps when flowing. Granulars refers to the coarser granular materials that do not tend to form clumps except when wet. Many manufactured goods come in powder form, such as flour , sugar , ground coffee , powdered milk , copy machine toner , gunpowder , cosmetic powders, and some pharmaceuticals. In nature, dust , fine sand and snow , volcanic ash , and the top layer of the lunar regolith are also examples. Because of their importance to industry, medicine and earth science, powders have been studied in great detail by chemical engineers , mechanical engineers , chemists , physicists , geologists , and researchers in other disciplines.
OTHER WORDS FROM powder
Movies / TV
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Does Michael Sheen know his own career? Watch the video. Just before Halloween, three young brothers alone in a big house are menaced by three escaped mental patients who have murdered some traveling circus clowns and taken their identities. An attorney decides to take a trip with his father to their isolated family cabin to talk things out but their ensuing family argument is suddenly interrupted by two escaped convicts. An ordinary man sees a bright light descend from the sky, and discovers he now has super-intelligence and telekinesis.
The film is about Jeremy "Powder" Reed, who has an incredible intellect, as well as telepathy and paranormal powers. It questions the limits of the human mind and body while also displaying society's capacity for cruelty, and raises hope that humanity will advance to a state of better understanding. The film was a financial success, but critical reviews were mixed and the film's release dogged with controversy due to Salva's prior conviction for child sex abuse.