Materials

Some articles on materials, material:

Bow (music) - Materials and Manufacture
... A bow consists of a specially shaped stick with other material forming a ribbon stretched between its ends, which is used to stroke the string and create sound ... Part of the bowmaker's skill is the ability to choose high quality material for the stick ... regulated by international treaty, so makers are currently adopting other materials woods such as Ipê (Tabebuia) as well as synthetic materials ...
Organic Field-effect Transistor - Materials
... One common feature of OFET materials is the inclusion of an aromatic or otherwise conjugated π-electron system, facilitating the delocalization of orbital wavefunctions ... OFETs employing many aromatic and conjugated materials as the active semiconducting layer have been reported, including small molecules such as rubrene, tetracene, pentacene ... articles exist documenting the development of these materials ...
Drill Bit - Characteristics - Materials
... Many different materials are used for or on drill bits, depending on the required application ... Many hard materials, such as carbides, are much more brittle than steel, and are far more subject to breaking, particularly if the drill is not held at a very constant angle ... conferred by hardening and tempering the material ...
Wide Bandgap Semiconductors - Material Properties - Bandgap
... the coulombic potential determines the bandgap of a material, and the size of atoms and electronegativities are two factors that determine the bandgap ... Materials with small atoms and strong, electronegative atomic bonds are associated with wide bandgaps ... Elements high on the periodic table are more likely to be wide bandgap materials ...
Obscene Publications Act 1959 - Impact and Assessment
... where the police purchased "obscene" materials were not considered sufficient evidence of publication, since the police were not considered easy to "cor ... Secondly, the offer of such materials for sale was not held to be publication, since it was merely an invitation to treat ... obscene articles for publication or sale" and also extended "obscene materials" to cover photograph negatives ...

Famous quotes containing the word materials:

    What is most interesting and valuable in it, however, is not the materials for the history of Pontiac, or Braddock, or the Northwest, which it furnishes; not the annals of the country, but the natural facts, or perennials, which are ever without date. When out of history the truth shall be extracted, it will have shed its dates like withered leaves.
    Henry David Thoreau (1817–1862)

    Though the hen should sit all day, she could lay only one egg, and, besides, would not have picked up materials for another.
    Henry David Thoreau (1817–1862)

    In how few words, for instance, the Greeks would have told the story of Abelard and Heloise, making but a sentence of our classical dictionary.... We moderns, on the other hand, collect only the raw materials of biography and history, “memoirs to serve for a history,” which is but materials to serve for a mythology.
    Henry David Thoreau (1817–1862)