Kelvin (K)
Definition: Kelvin (K) is the SI base unit of temperature, starting from absolute zero (0 K) where molecular motion stops. It is used in scientific and engineering fields.
History: The Kelvin scale was introduced by William Thomson (Lord Kelvin) in 1848, using absolute zero as the zero point and based on Celsius increments. It revolutionized thermodynamics and became the standard for scientific temperature measurements.
Current Use: Kelvin is essential in scientific research, particularly in physics, thermodynamics, and chemistry. It is used to express temperatures in absolute terms, crucial for understanding molecular behavior and energy systems.
Rankine (°R)
Definition: Rankine (°R) is a thermodynamic temperature scale that starts at absolute zero, using Fahrenheit increments. It is used in thermodynamics, particularly in the US.
History: The Rankine scale was developed by William John Macquorn Rankine in the 1850s, inspired by Kelvin but with Fahrenheit degrees. It was designed for thermodynamic calculations in systems using the Fahrenheit scale.
Current Use: Rankine is primarily used in thermodynamics in the US, especially in analyzing heat engines, refrigeration cycles, and energy systems. It is more specialized and less common than other temperature scales.
Quick Conversion Table Kelvin (K) to Rankine (°R)
1 Kelvin (K) equal to 1.8 Rankine (°R)
5 Kelvin (K) equal to 9 Rankine (°R)
10 Kelvin (K) equal to 18 Rankine (°R)
20 Kelvin (K) equal to 36 Rankine (°R)
30 Kelvin (K) equal to 54 Rankine (°R)
50 Kelvin (K) equal to 90 Rankine (°R)
75 Kelvin (K) equal to 135 Rankine (°R)
100 Kelvin (K) equal to 180 Rankine (°R)