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We- Weak Acid
- Substances capable of donating hydrogen but do not completely ionize in solution.
- Weak Anthropic Principle
- The conditions necessary for the development of intelligent life will be met only in certain regions that are limited in space and time.
- Weak Bases
- Substances capable of accepting hydrogen but do not completely ionize in solution.
- Weak Electrolyte
- A weak electrolyte is a solute that incompletely dissociates into ions in solution.
- Weak Force
- The force responsible for beta decay. This force occurs through the exchange
of the W and Z0 particles.
- Wear Pattern
- A pattern of wear visible at the point where two parts touch.
- Weathering
- The action of wind, temperature changes, chemicals and water that breaks the surface of rocks into smaller particles.
- Weber
- The weber is the SI unit of magnetic flux.
- Weber-Fechner Law
- An approximate psychophysical law relating the degree of response or sensation of a sense organ and the intensity of the stimulus.
- Weblinks
- Lists all the Weblinks referenced in the Encyclopaedia
- Weft
- The yarns running perpendicular to the warp in a woven fabric.
- Weibull Distribution
- A distribution used for random variables which are constrained to be greater or equal to 0.
- Weight
- The support force needed to maintain an object at rest relative to a reference system.
- Weightlessness
- Sometimes termed "zero g", it is the condition when no force (such as weight) is sensed.
- Weiss Constant
- A characteristic constant dependent on the material, used in calculating the susceptibility of paramagnetic materials.
- Weld Bead
- A weld deposit resulting from a pass.
- Weld Gauge
- A device designed for checking the shape and size of welds.
- Weld Metal
- That portion of a weld that has been melted during welding.
- Weld Symbol
- A picture used to indicate the desired type of weld.
- Weldability
- The capacity of a material to form a strong bond of adherence under pressure or when solidifying from a liquid.
- Welder Certification
- Certification in writing that a welder has produced welds meeting prescribed standards.
- Welder Performance Qualification
- The demonstration of a welders ability to produce welds meeting prescribed standards.
- Welding
- The process of joining two pieces of metal together by hammering, pressure or fusion.
- Welding Pressure
- The pressure exerted during the welding operation on the parts being welded.
- Welding Rod
- Filler metal in wire or rod form, used in gas welding and brazing processes and in those arc welding processes in which the electrode does not provide the filler metal.
- Welding Tip
- The tip of a gas torch especially adapted to welding.
- Welding Torch
- A device used in gas welding and torch brazing for mixing and controlling the flow of gases.
- Welding Transformer
- A device for providing current of the desired voltage.
- Weldment
- An assembly whose component parts are formed by welding.
- Wentworth-Udden Particle Scale
- A common system of grading the size of grains in a rock or sediment.
- Weston Cell
- A voltaic cell that is used as a reference emf.
- Westwork
- In German Romanesque, a monumental entrance to a church consisting of porches and towers, with a chapel above.
- Wet
- To come in contact with a fluid.
- Wet Bulb Temperature
- The temperature at which water, by evaporating into air, can bring the air to saturation at the same temperature.
- Wet Bulb Thermometer
- A wet wick is placed over a standard thermometer and air is blown across the surface. The temperature depends on how much moisture is in the air.
- Wetting
- Covering with a surface with thin film of liquid.
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