# CONSTRUCTION COST

The total costs, direct and indirect, associated with transforming A universal joint that transmits constant angular velocity from the driving to the driven shaft, such as the Bendix-Weiss universal joint.

## Related Terms

### POLARIZING PYROMETER

A type of pyrometer, such as the Wanner optical pyrometer, in which monochromatic light from the source under investigation and light from a lamp with filament maintained at a constant but unknown temperature are both polarized and their intensities compared.

### PLANE STRESS

A state of stress in which two of the principal stresses are always parallel to a given plane and are constant in the normal direction.

### PHOTOELECTRIC CONSTANT

The ratio of the frequency of radiation causing emission of photoelectrons to the voltage corresponding to the energy absorbed by a photoelectron; equal to Planck's constant divided by the electron charge.

### PERMITTIVITY

The dielectric constant multiplied by the permittivity of empty space, where the permittivity of empty space (0) is a constant appearing in Coulomb's law, having the value of 1 in centimeter-gram-second electrostatic units, and of 8.854 10 12 farad/meter in rationalized meter-kilogram-second units.

### NEWTON'S FIRST LAW

The law that a particle not subjected to external forces remains at rest or moves with constant speed in a straight line. Also known as first law of motion; Galileo's law of inertia.

### NEWTONIAN REFERENCE FRAME

One of a set of reference frames with constant relative velocity and within which Newton's laws hold; the frames have a common time, and coordinates are related by the Galilean transformation rule.

### METERING SCREW

An extrusion-type screw feeder or conveyor section used to feed pulverized or doughy material at a constant rate.

### MAXIMUM WORKING AREA

[INDENG] That portion of the working area that is readily accessible to the hands of a worker when in his normal states that the difference between the specific heat of a gas at constant pressure and its specific heat at constant volume is equal to the gas constant divided by the molecular weight of the gas.

### MAGNETIC FLUX QUANTUM

A fundamental unit of magnetic flux, the total magnetic flux in a fluxoid in a type II superconductor, equal to h/(2e), where h is Planck's constant and e is the magnitude of the electron charge, or approxiiron, nickel, or titanium, or nonmagnetic deposits which either contain magnetic gangue minerals or are associated with magnetic structures.

### LOSS-IN-WEIGHT FEEDER

A device to apportion the output of granulated or powdered solids at a constant rate from a feed hopper; weight-measured decrease in hopper content actuates further opening of the discharge chute to compensate for flow loss as the hopper overburden decreases; used in the chemical, fertilizer, and plastics industries.

### Related questions

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