Entries starting with W

128 entries.

Weyl fermion

A massless quasiparticle and fermion, which carries electric charge, and cannot move backwards, that may exist in Weyl semimetals, where an electron can be split into two Weyl fermions which move in opposite directions, which can form an electron by combining two Weyl fermions.

WFR

Initialism of wall-to-floor ratio, a metric indicating construction efficiency and costs.

wharfinger

The manager of a wharf along a railway line, that is, a place used for loading and unloading goods on to trains.

whim

A large capstan or vertical drum turned by horse power or steam power, for raising ore or water, etc., from mines, or for other purposes.

whip stitch

A simple embroidery or hand sewing stitch in which the needle is passed in and out of the fabric in a series of stitches that circle an edge of the fabric.

whiskering

A defect of gravure printing characterized by printed areas possessing hairlike tendrils of ink sticking out into non-image areas.

white plague

The white gold-aluminium intermetallic compound Au₅Al₂, which can be formed when gold and aluminium are heated in direct contact (for instance, at an electrical junction between gold and aluminium components).

windsplit

A stylized crease, accent line, or body contour on a vehicle, typically running along the beltline, fender, hood, or quarter panels, designed to emphasize motion, streamline appearance, or aerodynamics.

winker

nounAutomotiveinformal

A thing which is used to wink with, or which winks.

winter tire

A tire with rubber that remains soft in most winter temperatures, to maintain grip on snow on ice, with good tread life on dry roads in cold conditions (tread life is poor in warm and hot conditions)

winze

A steep shaft for such purposes as: to join two levels in a mine; or to explore greater depths when considering whether to open a new level; or to permit forced ventilation of deeper levels.

wipe

To make (a joint, as between pieces of lead pipe), by surrounding the junction with a mass of solder, applied in a plastic condition by means of a rag with which the solder is shaped by rubbing.

wood burner

A steam locomotive fuelled with wood instead of coal or oil, mainly used in areas with a plentiful supply of wood.

work envelope

The area which a robot, or any part of one, can reach and can operate within.

work hardening

The repeated plastic deformation of a material, causing a permanent distortion of its crystal structure, and an increase in its strength and hardness; the resultant hardness increase itself. (It can be either desirable or undesirable depending on the aims and circumstances in a metalworking task.)

workpiece

A partially finished object (often composed of a raw material) which is subjected to various operations, worked on with tools, etc.

wort

Also worts: a liquid extracted from mash (ground malt or some other grain soaked in hot water), which is then fermented to make beer, or fermented and distilled to make a malt liquor such as whisky.