When was the Rankine scale first produced?

• A. 1724
• B. 1859
• C. 1932
• D. 1945

Answer: (B)

The Rankine scale was first introduced in 1859 by William John Macquorn Rankine, a Scottish engineer and physicist. This temperature scale is an absolute temperature scale defined similarly to the Kelvin scale but is based on the Fahrenheit degree increments. It begins at absolute zero, the point at which all thermal motion ceases, and is primarily used in thermodynamic calculations involving engines and heat pumps, particularly in the field of engineering.

The significance of the Rankine scale lies in its application in various engineering contexts, allowing professionals to work with absolute temperature measures while using Fahrenheit as their degree unit. The date of its introduction is vital for understanding the timeline of temperature scale development and its relevance in modern science and engineering practices.