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and has been replaced by the {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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