Berikut ini adalah penetapan titik tetap pada skala termometer:
1. Termometer Celcius
TTB = 0
TTA = 100
Di antara titik tetap dibagi menjadi 100 skala.
2. Termometer Reamur
TTB = 0
TTA = 80
Di antara titik tetap dibagi menjadi 80 skala.
3. Termometer Fahrenheit
TTB = 32
TTA = 212
Di antara titik tetap dibagi menjadi 212 - 32 = 180 skala.
4. Termometer Kelvin
TTB = 273
TTA = 373
Di antara titik tetap dibagi menjadi 373 - 273 = 100 skala.
Celcius, Reamur, Fahrenheit, Kelvin |
Konversi Suhu
1) Konversi Celcius -> Reamur
Rumus:
°R = (skala R/skala C) x C= 80/100 x C= 4/5 x CContoh:
Suhu suatu benda adalah 50°C. Maka suhunya dalam reamur adalah..
°R = 4/5 x C= 4/5 x 50 °C= 40 °R2) Konversi Celcius -> Fahrenheit
Rumus:
°F = (skala F/skala C) x C + 32 = 180/100 x C + 32= 9/5 x C + 32Contoh:
Suhu suatu benda adalah 50°C. Maka suhunya dalam Fahrenheit adalah...
°F = 9/5 x C + 32= 9/5 x 50°C + 32= 9 + 32 °C = 41°F
3) Konversi Celcius -> Kelvin
Rumus:
K = (skala K/skala C) x C + 273Contoh:
= (100/100) x C + 273
= C + 273
Suhu suatu benda adalah 50°C. Maka suhunya dalam kelvin adalah...
K = C + 273= 50°C + 273= 323 KDengan logika yang sama, maka kita bisa mencari rumus untuk konversi suhu lainnya.
- Konversi suhu dari Reamur (R) ke Celcius (C), Fahrenheit (F), dan Kelvin (K) adalah:C = (5/4) R
F = (9/4) R + 32
K = C + 273 = (5/4) R + 273 - Konversi suhu dari Fahrenheit (F) ke Celcius (C), Reamur (R), dan Kelvin (K) adalah:C = 5/9 (F-32)
R = 4/9 (F-32)
K = 5/9 (F-32) + 273 - Konversi suhu dari Kelvin (K) ke Celcius (C), Reamur (R), Fahrenheit (F) adalah:C = K – 273
R = 4/5 (K-273)
F = 9/5 (K-273) + 32
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