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Conversion

Calculatrice vérifiée avec une formule transparente

Conversion

Celsius to Delisle Converter.

Converts a temperature from degrees Celsius to degrees Delisle, a historical temperature scale where water boils at 0 °De and freezes at 150 °De.

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Vos entrées

Comment ça marche

  1. 1

    Enter the temperature in degrees Celsius.

  2. 2

    Subtract the Celsius value from 100.

  3. 3

    Multiply the result by 1.5 to get degrees Delisle.

(100 - celsius) * 1.5

Questions fréquentes

What is the Delisle scale?

The Delisle scale (°De) is a historical temperature scale where water boils at 0 °De and freezes at 150 °De. It was invented by French astronomer Joseph-Nicolas Delisle in 1732.

How do I convert Delisle back to Celsius?

To convert from Delisle to Celsius, use the formula: °C = 100 - (°De / 1.5). For example, 50 °De equals 100 - (50/1.5) ≈ 66.67 °C.

Why is the conversion factor 1.5?

The Delisle scale divides the interval between boiling and freezing (100 °C) into 150 degrees, so each degree Delisle is 2/3 of a degree Celsius. Thus, °De = (100 - °C) × 1.5.

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Résultats

Formule vérifiée

Temperature in Delisle

112,5°De

Demander n'importe quoi

Estimation à titre indicatif uniquement — vérifiez les décisions importantes avec un professionnel approprié.

Comment ça marche

Converts a temperature from degrees Celsius to degrees Delisle, a historical temperature scale where water boils at 0 °De and freezes at 150 °De.

  1. Enter the temperature in degrees Celsius.
  2. Subtract the Celsius value from 100.
  3. Multiply the result by 1.5 to get degrees Delisle.

Formules

Les mathématiques derrière cette calculatrice, écrites pour que vous puissiez vérifier le résultat.

Celsius to Delisle

°De = (100 - °C) × 1.5

Subtract the Celsius temperature from 100 (the boiling point of water in Delisle) and multiply by 1.5 to account for the scale difference.

Example:

Input: °C = 20

Calculation: (100 - 20) × 1.5 = 80 × 1.5

Result: 120 °De

Cas d'utilisation réels

Où ce calcul apparaît dans la vie quotidienne.

Historical research

Convert temperatures from historical scientific records that used the Delisle scale.

Example: Reading a 1730s thermometer reading of 80 °De.

Educational demonstrations

Teach students about alternative temperature scales and their relationships.

Example: Showing that 0 °C equals 150 °De.

Curiosity and comparison

Understand how different scales represent the same physical temperature.

Example: Comparing a typical room temperature of 22 °C to its Delisle value.

Conseils et erreurs courantes

Tips

  • Remember that the Delisle scale is inverted: higher Celsius means lower Delisle.
  • For quick mental estimates, each 10 °C change corresponds to a 15 °De change.
  • Use the formula °De = (100 - °C) × 1.5 for exact conversions.
  • The freezing point of water is 150 °De, and the boiling point is 0 °De.

Common Mistakes to Avoid

  • Forgetting to subtract from 100 first; the formula is not simply °C × 1.5.
  • Confusing the direction: a higher Celsius value gives a lower Delisle value.
  • Using the wrong factor; it's 1.5, not 1.8 (which is for Fahrenheit).

Hypothèses et limites

  • Use the stated inputs and units.
  • Results are estimates for planning and education.
  • Check measurements and source data before making an important decision.