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Dalton    音标拼音: [d'ɔltən]
n. 道尔顿

道尔顿

Dalton
n 1: English chemist and physicist who formulated atomic theory
and the law of partial pressures; gave the first
description of red-green color blindness (1766-1844) [synonym:
{Dalton}, {John Dalton}]

Microcrith \Mi`cro*crith"\, n. [Micro- crith.] (Chem.)
The weight of the half hydrogen molecule, or of the hydrogen
atom, at one time taken as the standard in comparing the
atomic weights of the elements; thus, an atom of oxygen
weighs sixteen microcriths. This unit is no longer used, and
has been replaced by the {Dalton}, which is of approximately
the same value. See {molecular weight} and {Crith}. --J. P.
Cooke.
[1913 Webster PJC]


Dalton \Dalton\ n.
John Dalton, scientist, born 1766, died 1844.

Syn: John Dalton.
[WordNet 1.5]


dalton \dalton\ n. [from the chemist John Dalton, proponent of
the modern atomic theory of matter.]
a unit of mass, approximately 1.66 x 10^{-24} grams; -- it is
approximately equal to the mass of one hydrogen atom, but the
exact value differs slightly as used in physics and
chemistry. It is used mostly to describe the size of proteins
and nucleic acids in biochemistry.

Note: Molecular weights are often expressed as dimensionless
units, the unit being understood (in chemistry) to be
the atomic mass unit with carbon equal to 14. Thus
having a "molecular weight of 255" means the same as
each molecule having a mass of 255 daltons.

Syn: Syn. atomic mass unit.
[PJC]

Dalton, NE -- U.S. village in Nebraska
Population (2000): 332
Housing Units (2000): 170
Land area (2000): 0.343611 sq. miles (0.889948 sq. km)
Water area (2000): 0.000000 sq. miles (0.000000 sq. km)
Total area (2000): 0.343611 sq. miles (0.889948 sq. km)
FIPS code: 12070
Located within: Nebraska (NE), FIPS 31
Location: 41.408685 N, 102.972195 W
ZIP Codes (1990): 69131
Note: some ZIP codes may be omitted esp. for suburbs.
Headwords:
Dalton, NE
Dalton


Dalton, GA -- U.S. city in Georgia
Population (2000): 27912
Housing Units (2000): 10229
Land area (2000): 19.824620 sq. miles (51.345527 sq. km)
Water area (2000): 0.015111 sq. miles (0.039138 sq. km)
Total area (2000): 19.839731 sq. miles (51.384665 sq. km)
FIPS code: 21380
Located within: Georgia (GA), FIPS 13
Location: 34.771088 N, 84.971553 W
ZIP Codes (1990): 30720 30721
Note: some ZIP codes may be omitted esp. for suburbs.
Headwords:
Dalton, GA
Dalton


Dalton, OH -- U.S. village in Ohio
Population (2000): 1605
Housing Units (2000): 628
Land area (2000): 1.221573 sq. miles (3.163859 sq. km)
Water area (2000): 0.000000 sq. miles (0.000000 sq. km)
Total area (2000): 1.221573 sq. miles (3.163859 sq. km)
FIPS code: 19974
Located within: Ohio (OH), FIPS 39
Location: 40.799295 N, 81.697030 W
ZIP Codes (1990): 44618
Note: some ZIP codes may be omitted esp. for suburbs.
Headwords:
Dalton, OH
Dalton


Dalton, PA -- U.S. borough in Pennsylvania
Population (2000): 1294
Housing Units (2000): 519
Land area (2000): 3.100343 sq. miles (8.029850 sq. km)
Water area (2000): 0.061813 sq. miles (0.160096 sq. km)
Total area (2000): 3.162156 sq. miles (8.189946 sq. km)
FIPS code: 18088
Located within: Pennsylvania (PA), FIPS 42
Location: 41.535597 N, 75.735090 W
ZIP Codes (1990): 18414
Note: some ZIP codes may be omitted esp. for suburbs.
Headwords:
Dalton, PA
Dalton


Dalton, MN -- U.S. city in Minnesota
Population (2000): 258
Housing Units (2000): 119
Land area (2000): 0.239488 sq. miles (0.620272 sq. km)
Water area (2000): 0.000000 sq. miles (0.000000 sq. km)
Total area (2000): 0.239488 sq. miles (0.620272 sq. km)
FIPS code: 14626
Located within: Minnesota (MN), FIPS 27
Location: 46.173403 N, 95.916658 W
ZIP Codes (1990): 56324
Note: some ZIP codes may be omitted esp. for suburbs.
Headwords:
Dalton, MN
Dalton


Dalton, MO -- U.S. town in Missouri
Population (2000): 27
Housing Units (2000): 24
Land area (2000): 0.177026 sq. miles (0.458495 sq. km)
Water area (2000): 0.000000 sq. miles (0.000000 sq. km)
Total area (2000): 0.177026 sq. miles (0.458495 sq. km)
FIPS code: 18118
Located within: Missouri (MO), FIPS 29
Location: 39.397130 N, 92.991248 W
ZIP Codes (1990): 65246
Note: some ZIP codes may be omitted esp. for suburbs.
Headwords:
Dalton, MO
Dalton


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  • John Dalton - Wikipedia
    John Dalton FRS ( ˈdɔːltən ; 5 or 6 September 1766 – 27 July 1844) was an English chemist, physicist, and meteorologist whose work laid the foundations of modern atomic theory and stoichiometric chemistry
  • John Dalton | Biography, Discoveries, Atomic Model, Facts - Britannica
    John Dalton, English meteorologist and chemist, a pioneer in the development of modern atomic theory His theory was notable for, among other things, positing that each element had its own kind of atom and that atoms of various elements vary in size and mass Learn more about Dalton in this article
  • John Dalton The Theory of Atomism | Science History Institute
    Although a schoolteacher, a meteorologist, and an expert on color blindness, John Dalton is best known for his pioneering theory of atomism He also developed methods to calculate atomic weights and structures and formulated the law of partial pressures
  • Andy Dalton passes physical, trade to Eagles is official - MSN
    The Andy Dalton trade has now become official The Panthers and Eagles announced on Tuesday morning that Dalton has been traded to Philadelphia in exchange for a seventh-round pick in the 2027 draft
  • Eagles acquire QB Andy Dalton in trade with Panthers
    The Eagles added a wealth of experience to the quarterback room on Tuesday, acquiring Andy Dalton in a trade with the Carolina Panthers The Eagles will give the Panthers a 2027 seventh-round draft pick in return
  • John Dalton - New World Encyclopedia
    Dalton is best known for his formulation of the atomic theory, which clarified our understanding of how atoms combine to form compounds, and how atoms may form new combinations during chemical reactions
  • John Dalton: Biography
    Dalton's most significant contribution to science was his development of modern atomic theory In 1803, he proposed that all matter is composed of small, indivisible particles called atoms
  • Andy Dalton trade: Eagles land veteran QB from Panthers - CBS Sports
    The Eagles have acquired quarterback Andy Dalton from the Panthers, shoring up their depth behind starter Jalen Hurts, CBS Sports NFL insider Jonathan Jones confirms Philadelphia is sending a
  • John Dalton - Atomic Theory, Discovery Experiments
    Chemist John Dalton is credited with pioneering modern atomic theory He was also the first to study color blindness
  • Sources: Eagles trade 2027 pick for Panthers QB Andy Dalton
    The Panthers are trading veteran quarterback Andy Dalton to the Eagles in exchange for a 2027 seventh-round pick, sources told ESPN's Adam Schefter





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