Materials

Some articles on materials, material:

Obscene Publications Act 1959 - Impact and Assessment
... sting" operations where the police purchased "obscene" materials were not considered sufficient evidence of publication, since the police were not considered easy to "corr ... 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 ...
Wide Bandgap Semiconductors - Material Properties - Bandgap
... The magnitude of the coulombic potential determines the bandgap of a material, and the size of atoms and electronegativities are two factors that ... 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 ... 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 to the workpiece, e ... bits due to the properties conferred by hardening and tempering the 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 ... the bowmaker's skill is the ability to choose high quality material for the stick ... species whose export is regulated by international treaty, so makers are currently adopting other materials woods such as Ipê (Tabebuia) as well as synthetic ...

Famous quotes containing the word materials:

    If our entertainment culture seems debased and unsatisfying, the hope is that our children will create something of greater worth. But it is as if we expect them to create out of nothing, like God, for the encouragement of creativity is in the popular mind, opposed to instruction. There is little sense that creativity must grow out of tradition, even when it is critical of that tradition, and children are scarcely being given the materials on which their creativity could work
    C. John Sommerville (20th century)

    If only it were God’s will that printed and written materials have as much influence on the people as the princes and their censors fear! Considering the countless good books we have, the world would have changed for the better a long time ago.
    Franz Grillparzer (1791–1872)

    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)