Weight

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WEIGHT. A quality in natural bodies, by which they tend towards the centre of the earth.
     2. Under the article Measure, (q.v.) it is said that by the constitution congress possesses the power "to fix the standard of weights and measures," and that this power has not been exercised.
     3. The weights now generally used in the United States, are the same as those of England; they are of two kinds:


     1. AVOIRDUPOIS WEIGHT. 1st. Used in almost all commercial transactions, and in the common dealings of life. 27 1/3 1/2 grains = 1 dram 16 drams = 1 ounce 16 ounces = 1 pound, (lb.) 28 pounds = 1 quarter, (qr.) 4 quarters = 1 hundred weight, (cwt.) 20 hundred weight = 1 ton. 2d. Used for meat and fish. 8 pounds = 1 stone 3d. Used in the wool trade.
     Cwt. qr. lb. 7 pounds = 1 clove 14 pounds = 1 stone = 0 0 14 2 stones = 1 tod = 0 1 0 6 1/2 tods = 1 wey = 1 2 14 2 weys = 1 sack = 3 1 0 12 sacks = 1 last = 39 0 0 4th. Used for butter and cheese. 8 pounds = 1 clove 56 pounds = 1 firkin.
     2. TROY WEIGHT. 24 grams = 1 pennyweight 20 pennyweights = 1 ounce 12 ounces = 1 pound.

     4. These are the denominations of troy weight, when used for weighing gold, silver and precious stones, except diamonds. Troy weight is also used by apothecaries in compounding medicines; and by them the ounce is divided into eight drams, and the drain into three scruples, so that the latter is equal to twenty grains. For scientific purposes, the grain only is used, and sets of weights are constructed in decimal progression, from 10,000 grains downward to one-hundredth of a grain. The caret, used for weighing diamonds, is three and one-sixth grains.
     5. A short account of the French weights and measures is given under the article Measure.

References in periodicals archive ?
This was to develop into his success in correlating chemical properties and atomic weights in the periodic table.
The standard atomic weights, including the proton and electron reference masses were taken from the web-site of the National Institute of Standards (NIST) and were expressed in the atomic mass unit u.
Entering the 19th century and the era of atomic weights and atomic theory, chemistry began to disengage from its qualitative and descriptive character in the previous century when applications of chemistry to medicine were directed to the understanding of disease rather than to its relief.
If hydrogen was supposed to have an atomic weight of 1, oxygen would have one of 8.
The comprehensive table based the book "Experience of System of Element Found on Their Atomic Weight and Chemical Similarity", in terms of the dependence of each atomic mass on the number of the corresponding element, has been built by us and showed on Fig.
The foundations of mass spectrometry date back nearly 200 years to John Dalton, who proposed that all matter is composed of elements, that the number and types of atoms corresponded to the exact number and types of elements, and that all elements have a measurable physical property, atomic weight. Later, J.J.
But mass fraction averaging is based on atomic weight, which is the total mass of the protons, electrons and neutrons.
National Hydrogen and Fuel Cell Day is being observed on October 8 (10.08) as a reference to the atomic weight of hydrogen which is 1.008.
Nowadays, chemists are still making corrections to their atomic weight measurements, as Rachel Ehrenberg reports in this issue (Page 5).
In October 2006 in was reported that element 118 had been synthesized in Dubna (Russia), with atomic weight 293 [5].
Until now, determining the atomic weight of an element with more than one stable isotope entailed averaging the relative amounts of the different versions, boosting the uncertainty around each number.
His atomic weight table was far more correct than Dalton's (see 1803) and was the first in which we can recognize many modern values.