单位转换
已验证计算器，公式透明
Rankine to Delisle Calculator.
Converts a temperature from Rankine to Delisle, a rarely used temperature scale where water boils at 0°De and freezes at 150°De.
您的输入
工作原理
- 1
Enter the temperature in Rankine.
- 2
Subtract 491.67 from the Rankine value.
- 3
Multiply the result by 5/6.
- 4
The result is the temperature in Delisle.
(491.67 - rankine) * 5 / 6常见问题
What is the Delisle scale?
The Delisle scale (°De) is an obsolete temperature scale where water boils at 0°De and freezes at 150°De. It decreases as temperature increases.
How do I convert Rankine to Delisle manually?
Use the formula: °De = (491.67 - °R) × 5/6. For example, 500°R gives (491.67 - 500) × 5/6 = -6.94°De.
Can I convert Delisle back to Rankine?
Yes, the reverse formula is °R = 491.67 - (°De × 6/5).
工作原理
Converts a temperature from Rankine to Delisle, a rarely used temperature scale where water boils at 0°De and freezes at 150°De.
- Enter the temperature in Rankine.
- Subtract 491.67 from the Rankine value.
- Multiply the result by 5/6.
- The result is the temperature in Delisle.
公式
此计算器背后的数学公式，供您核对结果。
Rankine to Delisle
The Rankine scale is an absolute temperature scale with zero at absolute zero. The Delisle scale is inverted, so higher Rankine gives lower Delisle.
Example:
Input: °R = 671.67
Calculation: (491.67 - 671.67) × 5/6 = -180 × 5/6
Result: -150°De
实际应用场景
此计算在日常生活中的应用。
Historical temperature conversion
Useful for converting historical temperature records that were originally measured in Delisle.
Example: Convert a 19th-century Delisle reading to Rankine.
Educational exercises
Helps students understand temperature scales and their relationships.
Example: Practice converting between Rankine and Delisle.
Scientific curiosity
Explore the properties of obscure temperature scales.
Example: Compare absolute zero in Rankine (0°R) to Delisle (491.67°De).
提示与常见错误
Tips
- Remember that Delisle is an inverted scale: lower Delisle means higher temperature.
- Absolute zero in Rankine is 0°R, which corresponds to 491.67°De.
- Water freezes at 491.67°R (32°F) and boils at 671.67°R (212°F).
- Use the calculator for quick conversions, but verify with manual math for critical work.
Common Mistakes to Avoid
- Forgetting to subtract 491.67 before multiplying by 5/6.
- Confusing the direction: higher Rankine gives lower Delisle.
- Using the freezing point of water (491.67°R) as the boiling point.
假设与限制
- Use the stated inputs and units.
- Results are estimates for planning and education.
- Check measurements and source data before making an important decision.