The weight of an elementary atom, in relation to the weight of an atom of hydrogen. A hydrogen atom being taken as 1.00g.


Related Terms

PNEUMATIC WEIGHING SYSTEM

A system for weight measurement in which the load is detected by a nozzle and balanced by modulating the air pressure in an opposing capsule.

PERCENTCOMPACTION

Theratio,expressed as a percentage, of dry unit weight of a soil to maximum unit weight obtained in a laboratory compaction test.

OVERSHOT WHEEL

A horizontal-shaft waterwheel with buckets around the circumference; the weight of water pouring into the buckets from the top rotates the wheel.

N-P-K

The code identifying the components in a fertilizer mixture: nitrogen (N), phosphorus pentoxide (P), and potassium oxide (K). Fertilizers are graded in the order N-P-K, with the numbers indicating the percentage of the total weight of each component. For example, 5-10-10 represents a mixture containing by weight 5% nitrogen, 10% phosphorus pentoxide, and 10% potassium oxide. and a detector downstream measures the amount of decay of the resonance, thereby sensing fluid velocity.

NONBEARING WALL

A wall that bears no vertical weight other than its own.

NET LOAD CAPACITY

The weight of a material that can be handled, without failure, by a machine or process plus the weight of the container or device.

MOISTURE CONTENT

The quantity of water in a mass of soil, sewage, sludge, or screenings; expressed in percentage by weight of water in the mass.

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.

MATTHIESSEN SINKER METHOD

A method of determining the thermal expansion coefficient of a liquid, in which the apparent weight of a sinker when immersed in the liquid is measured for two different temperatures of the liquid.

MASS LAW OF SOUND INSULATION

The rule stating that sound insulation for a single wall is determined almost wholly by its weight per unit area; doubling the weight of the partition increases the insulation by 5 decibels.

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