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Ein temperaturskala er ein måte å dele eit termometer inn i grader på. Grunneininga for temperaturmåling er kelvin og er definert ut frå termodynamisk temperatur , og andre temperaturskalaer er fastlagt i tilhøve til kelvinskalaen.
Samanlikning
absolutt null vatn frys kroppstemp. vatn kokar
Kelvin 0 K
273,15 K
310,15 K
373,15 K
Celsius − 273,15 °C0 °C
37 °C
100 °C
Fahrenheit − 459,67 °F32 °F
98,6 °F
212 °F
Rankine 0 °Ra
491,67 °Ra
558,27 °Ra
671,67 °Ra
Delisle 559,73 °De
150 °De
94,5 °De
0 °De
Newton − 90,14 °N0 °N
12,21 °N
33 °N
Réaumur − 218,52 °Ré0 °Ré
29,6 °Ré
80 °Ré
Rømer − 135,9 °Rø7,5 °Rø
26,93 °Rø
60 °Rø
Celsius [°C] = [K] − 273,15
[K] = [°C] + 273,15
Fahrenheit [°F] = [K] · 9/5 − 459,67
[K] = ([°F] + 459,67) · 5/9
Rankine [°Ra] = [K] · 9/5
[K] = [°Ra] · 5/9
Réaumur [°Ré] = ([K] − 273,15) · 4/5
[K] = [°Ré] · 5/4 + 273,15
Newton [°N] = ([K] − 273,15) · 33/100
[K] = [°N] · 100/33 + 273,15
Rømer [°Rø] = ([K] − 273,15) · 21/40 + 7,5
[K] = ([°Rø] − 7,5) · 40/21 + 273,15
Delisle [°De] = (373,15 − [K]) · 3/2
[K] = 373,15 − [°De] · 2/3
Matematisk oppstilte formlar:
K
=
∘
C
−
273
,
15
=
5
(
∘
F
+
459
,
67
)
9
=
5
∘
R
a
9
=
5
∘
R
e
´
4
+
273
,
15
{\displaystyle K={}^{\circ }\!C-273,15={\frac {5({}^{\circ }\!F+459,67)}{9}}={\frac {5^{\circ }\!Ra}{9}}={\frac {5^{\circ }\!R{\acute {e}}}{4}}+273,15}
K
=
100
∘
N
33
+
273
,
15
=
40
(
∘
R
o
¨
−
7
,
5
)
21
+
273
,
15
=
373
,
15
−
2
∘
D
e
3
{\displaystyle K={\frac {100^{\circ }\!N}{33}}+273,15={\frac {40({}^{\circ }\!R{\ddot {o}}-7,5)}{21}}+273,15=373,15-{\frac {2^{\circ }\!De}{3}}}
Kelvin [K] = [°C] + 273,15
[°C] = [K] − 273,15
Fahrenheit [°F] = [°C] · 9/5 + 32
[°C] = ([°F] − 32) · 5/9
Rankine [°Ra] = [°C] · 9/5 + 491,67
[°C] = ([°Ra] − 491,67) · 5/9
Réaumur [°Ré] = [°C] · 4/5
[°C] = [°Ré] · 5/4
Newton [°N] = [°C] · 33/100
[°C] = [°N] · 100/33
Rømer [°Rø] = [°C] · 21/40 + 7,5
[°C] = ([°Rø] − 7,5) · 40/21
Delisle [°De] = (100 − [°C]) · 3/2
[°C] = 100 − [°De] · 2/3
Matematisk oppstilte formlar:
∘
C
=
K
−
273
,
15
=
5
(
∘
F
−
32
)
9
=
5
(
R
a
−
491
,
67
)
9
{\displaystyle {}^{\circ }\!C=K-273,15={\frac {5({}^{\circ }\!F-32)}{9}}={\frac {5(Ra-491,67)}{9}}}
∘
C
=
5
∘
R
e
´
4
=
100
∘
N
33
=
40
(
∘
R
o
¨
−
7
,
5
)
21
=
2
∘
D
e
3
−
100
{\displaystyle {}^{\circ }\!C={\frac {5^{\circ }\!R{\acute {e}}}{4}}={\frac {100^{\circ }\!N}{33}}={\frac {40({}^{\circ }\!R{\ddot {o}}-7,5)}{21}}={\frac {2^{\circ }\!De}{3}}-100}
Kelvin [K] = ([°F] + 459,67) · 5/9
[°F] = [K] · 9/5 − 459,67
Celsius [°C] = ([°F] − 32) · 5/9
[°F] = [°C] · 9/5 + 32
Rankine [°Ra] = [°F] + 459,67
[°F] = [°Ra] − 459,67
Réaumur [°Ré] = ([°F] − 32) · 4/9
[°F] = [°Ré] · 9/4 + 32
Newton [°N] = ([°F] − 32) · 11/60
[°F] = [°N] · 60/11 + 32
Rømer [°Rø] = ([°F] − 32) · 7/24 + 7,5
[°F] = ([°Rø] − 7,5) · 24/7 + 32
Delisle [°De] = (212 − [°F]) · 5/6
[°F] = 212 − [°De] · 6/5
Matematisk oppstilte formlar:
∘
F
=
9
K
5
−
459
,
67
=
9
∘
C
5
+
32
=
∘
R
a
−
459
,
67
=
45
∘
R
e
´
/
4
−
273
,
15
5
{\displaystyle {}^{\circ }\!F={\frac {9K}{5}}-459,67={\frac {9{}^{\circ }\!C}{5}}+32={}^{\circ }\!Ra-459,67={\frac {45^{\circ }\!R{\acute {e}}/4-273,15}{5}}}
∘
F
=
60
∘
N
11
+
32
=
24
(
∘
R
o
¨
−
7
,
5
)
7
+
32
=
212
−
6
D
e
5
{\displaystyle {}^{\circ }\!F={\frac {60^{\circ }\!N}{11}}+32={\frac {24({}^{\circ }\!R{\ddot {o}}-7,5)}{7}}+32=212-{\frac {6De}{5}}}
Kelvin [K] = [°R] · 5/9
[°R] = [K] · 9/5
Celsius [°C] = [°R] · 5/9 − 273,15
[°R] = ([°C] + 273,15) · 9/5
Fahrenheit [°F] = [°R] − 459,67
[°R] = [°F] + 459,67
Réaumur [°Ré] = ([°R] · 5/9 + 273,15) · 4/5
[°R] = ([°Ré] · 5/4 − 273,15) · 9/5
Newton [°N] = ([°R] − 491,67) · 11/60
[°R] = [°N] · 60/11 + 491,67
Rømer [°Rø] = ([°R] − 491,67) · 7/24 + 7,5
[°R] = ([°Rø] − 7,5) · 24/7 + 491,67
Delisle [°De] = (671,67 − [°R]) · 5/6
[°R] = 671,67 − [°De] · 6/5
Matematisk oppstilte formlar:
∘
R
=
9
K
5
=
9
(
∘
C
+
273
,
15
)
5
=
∘
F
+
459
,
67
=
9
(
5
∘
R
e
´
/
5
−
273
,
15
)
5
{\displaystyle {}^{\circ }\!R={\frac {9K}{5}}={\frac {9({}^{\circ }\!C+273,15)}{5}}={}^{\circ }\!F+459,67={\frac {9(5^{\circ }\!R{\acute {e}}/5-273,15)}{5}}}
∘
R
=
60
∘
N
11
+
491
,
67
=
24
(
∘
R
o
¨
−
7
,
5
)
7
+
491
,
67
=
671
,
67
−
6
∘
D
e
5
{\displaystyle {}^{\circ }\!R={\frac {60^{\circ }\!N}{11}}+491,67={\frac {24({}^{\circ }\!R{\ddot {o}}-7,5)}{7}}+491,67=671,67-{\frac {6^{\circ }\!De}{5}}}
Kelvin [K] = 373,15 − [°De] · 2/3
[°De] = (373,15 − [K]) · 3/2
Celsius [°C] = 100 − [°De] · 2/3
[°De] = (100 − [°C]) · 3/2
Fahrenheit [°F] = 212 − [°De] · 6/5
[°De] = (212 − [°F]) · 5/6
Rankine [°Ra] = 671,67 − [°De] · 6/5
[°De] = (671,67 − [°Ra]) · 5/6
Réaumur [°Ré] = 80 − [°De] · 8/15
[°De] = (80 − [°Ré]) · 15/8
Newton [°N] = 33 − [°De] · 11/50
[°De] = (33 − [°N]) · 50/11
Rømer [°Rø] = 60 − [°De] · 7/20
[°De] = (60 − [°Rø]) · 20/7
Matematisk oppstilte formlar:
∘
D
e
=
3
(
373
,
15
−
K
)
2
=
3
(
100
−
∘
C
)
2
=
5
(
212
−
∘
F
)
6
{\displaystyle {}^{\circ }\!De={\frac {3(373,15-K)}{2}}={\frac {3(100-{}^{\circ }\!C)}{2}}={\frac {5(212-{}^{\circ }\!F)}{6}}}
∘
D
e
=
5
(
671
,
67
−
∘
R
a
)
6
=
15
(
80
−
∘
R
e
´
)
8
=
50
(
33
−
∘
N
)
11
=
20
(
60
−
∘
R
o
¨
)
7
{\displaystyle {}^{\circ }\!De={\frac {5(671,67-{}^{\circ }\!Ra)}{6}}={\frac {15(80-^{\circ }\!R{\acute {e}})}{8}}={\frac {50(33-{}^{\circ }\!N)}{11}}={\frac {20(60-{}^{\circ }\!R{\ddot {o}}\!)}{7}}}
Kelvin [K] = [°N] · 100/33 + 273,15
[°N] = ([K] − 273,15) · 33/100
Celsius [°C] = [°N] · 100/33
[°N] = [°C] · 33/100
Fahrenheit [°F] = [°N] · 60/11 + 32
[°N] = ([°F] − 32) · 11/60
Rankine [°Ra] = [°N] · 60/11 + 491,67
[°N] = ([°Ra] − 491,67) · 11/60
Réaumur [°Ré] = [°N] · 80/33
[°N] = [°Ré] · 33/80
Rømer [°Rø] = [°N] · 35/22 + 7,5
[°N] = ([°Rø] − 7,5) · 22/35
Delisle [°De] = (33 − [°N]) · 50/11
[°N] = 33 − [°De] · 11/50
Matematisk oppstilte formlar:
∘
N
=
33
(
K
−
273
,
15
)
100
=
33
∘
C
100
=
11
(
∘
F
−
32
)
60
{\displaystyle {}^{\circ }\!N={\frac {33(K-273,15)}{100}}={\frac {33^{\circ }\!C}{100}}={\frac {11({}^{\circ }\!F-32)}{60}}}
∘
N
=
11
(
∘
R
a
−
491
,
67
)
60
=
33
∘
R
e
´
80
=
22
(
R
o
¨
−
7
,
5
)
35
=
33
−
11
∘
D
e
50
{\displaystyle {}^{\circ }\!N={\frac {11({}^{\circ }\!Ra-491,67)}{60}}={\frac {33^{\circ }\!R{\acute {e}}}{80}}={\frac {22(R{\ddot {o}}-7,5)}{35}}=33-{\frac {11{}^{\circ }\!De}{50}}}
Kelvin [K] = [°Ré] · 5/4 + 273,15
[°Ré] = ([K] − 273,15) · 4/5
Celsius [°C] = [°Ré] · 5/4
[°Ré] = [°C] · 4/5
Fahrenheit [°F] = [°Ré] · 9/4 + 32
[°Ré] = ([°F] − 32) · 4/9
Rankine [°Ra] = [°Ré] · 9/4 + 491,67
[°Ré] = ([°Ra] − 491,67) · 4/9
Newton [°N] = [°Ré] · 33/80
[°Ré] = [°N] · 80/33
Rømer [°Rø] = [°Ré] · 21/32 + 7,5
[°Ré] = ([°Rø] − 7,5) · 32/21
Delisle [°De] = (80 − [°Ré]) · 15/8
[°Ré] = 80 − [°De] · 8/15
Matematisk oppstilte formlar:
∘
R
e
´
=
4
(
K
−
273
,
15
)
5
=
4
∘
C
5
=
4
(
∘
F
−
32
)
9
{\displaystyle {}^{\circ }\!R{\acute {e}}={\frac {4(K-273,15)}{5}}={\frac {4{}^{\circ }\!C}{5}}={\frac {4({}^{\circ }\!F-32)}{9}}}
∘
R
e
´
=
4
(
∘
R
a
−
491
,
67
)
9
=
80
∘
N
33
=
32
(
∘
R
o
¨
−
7
,
5
)
21
=
80
−
8
∘
D
e
15
{\displaystyle {}^{\circ }\!R{\acute {e}}={\frac {4({}^{\circ }\!Ra-491,67)}{9}}={\frac {80^{\circ }\!N}{33}}={\frac {32({}^{\circ }\!R{\ddot {o}}-7,5)}{21}}=80-{\frac {8^{\circ }\!De}{15}}}
Kelvin [K] = ([°Rø] − 7,5) · 40/21 + 273,15
[°Rø] = ([K] − 273,15) · 21/40 + 7,5
Celsius [°C] = ([°Rø] − 7,5) · 40/21
[°Rø] = [°C] · 21/40 + 7,5
Fahrenheit [°F] = ([°Rø] − 7,5) · 24/7 + 32
[°Rø] = ([°F] − 32) · 7/24 + 7,5
Rankine [°Ra] = ([°Rø] − 7,5) · 24/7 + 491,67
[°Rø] = ([°Ra] − 491,67) · 7/24 + 7,5
Réaumur [°Ré] = ([°Rø] − 7,5) · 32/21
[°Rø] = [°Ré] · 21/32 + 7,5
Newton [°N] = ([°Rø] − 7,5) · 22/35
[°Rø] = [°N] · 35/22 + 7,5
Delisle [°De] = (60 − [°Rø]) · 20/7
[°Rø] = 60 − [°De] · 7/20
Matematisk oppstilte formlar:
∘
R
o
¨
=
21
(
K
−
273
,
15
)
40
+
7
,
5
=
21
∘
C
40
+
7
,
5
=
7
(
∘
F
−
32
)
24
+
7
,
5
{\displaystyle {}^{\circ }\!R{\ddot {o}}={\frac {21(K-273,15)}{40}}+7,5={\frac {21^{\circ }\!C}{40}}+7,5={\frac {7({}^{\circ }\!F-32)}{24}}+7,5}
∘
R
o
¨
=
7
(
∘
R
a
−
491
,
67
)
24
+
7
,
5
=
21
∘
R
e
´
32
+
7
,
5
=
35
∘
N
22
+
7
,
5
=
60
−
7
∘
D
e
20
{\displaystyle {}^{\circ }\!R{\ddot {o}}={\frac {7({}^{\circ }\!Ra-491,67)}{24}}+7,5={\frac {21^{\circ }\!R{\acute {e}}}{32}}+7,5={\frac {35^{\circ }\!N}{22}}+7,5=60-{\frac {7^{\circ }\!De}{20}}}
