Materials

Some articles on materials, material:

Bow (music) - Materials and Manufacture
... 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 ... so makers are currently adopting other materials woods such as Ipê (Tabebuia) as well as synthetic 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 to the workpiece, e.g ... conferred by hardening and tempering the material ...
Wide Bandgap Semiconductors - Material Properties - Bandgap
... of 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 ...
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, diindenoperylene ... Many review articles exist documenting the development of these 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 "corrupt" due to their ... Secondly, the offer of such materials for sale was not held to be publication, since it was merely an invitation to treat ... "possessing obscene articles for publication or sale" and also extended "obscene materials" to cover photograph negatives ...

Famous quotes containing the word materials:

    Young children learn in a different manner from that of older children and adults, yet we can teach them many things if we adapt our materials and mode of instruction to their level of ability. But we miseducate young children when we assume that their learning abilities are comparable to those of older children and that they can be taught with materials and with the same instructional procedures appropriate to school-age children.
    David Elkind (20th century)

    Realism to be effective must be a matter of selection. ... genius chooses its materials with a view to their beauty and effectiveness; mere talent copies what it thinks is nature, only to find it has been deceived by the external grossness of things.
    Julia Marlowe (1866–1950)

    The competent leader of men cares little for the niceties of other peoples’ characters: he cares much—everything—for the exterior uses to which they may be put.... These are men to be moved. How should he move them? He supplies the power; others simply the materials on which that power operates.
    Woodrow Wilson (1856–1924)