Question 1

What is the Rankine scale?

Accepted Answer

Absolute temperature scale using Fahrenheit degrees. 0°R = absolute zero. R = F + 459.67.

Question 2

Where is Rankine used?

Accepted Answer

US engineering, especially thermodynamics. Like Kelvin is to Celsius, Rankine is to Fahrenheit.

Question 3

Why does -40 equal -40 in Fahrenheit and Celsius?

Accepted Answer

The two scales have different zero points and scale factors, but happen to intersect at -40. It's the only temperature where °F = °C.

Question 4

What's the coldest possible temperature?

Accepted Answer

Absolute zero (0 K = -273.15°C = -459.67°F) is the theoretical minimum. It's never been reached, though labs have gotten within billionths of a degree.

Rankine to Celsius Temperature Converter - Free Online Tool

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