Chapter 11, Problem 11.29QP

Interpretation Introduction

Interpretation:

The farmers are spray water above and on their fruit trees on at rest nights when they the temperature is decreases under $\text{0°C}$.  This is to be explained.

Concept introduction:

The nonstop use of water is critical.  It is freezing process that prevents the fruit or blossoms.  When freezing stops, evaporation will starts, the temperature decreases.  The course works well when the temperature suspended around freezing.