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.
Forskjellige temperaturskalaer Formalar for temperaturomrekning Samanlikning absolutt null vatn fryskroppstemp. vatn kokar Kelvin 0 K 273,15 K 310,15 K 373,15 K Celsius −273,15 °C 0 °C 37 °C 100 °C Fahrenheit −459,67 °F 32 °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 °N 0 °N 12,21 °N 33 °N Réaumur −218,52 °Ré 0 °Ré 29,6 °Ré 80 °Ré Rømer −135,9 °Rø 7,5 °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:
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:
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}}}
Delisle 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:
Newton 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:
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:
Rømer 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}}}
Bakgrunnsstoff Kjelder 
