In materials science, quenching is the rapid cooling of a workpiece in water, oil or air to obtain certain material properties. A type of heat treating, quenching prevents undesired low-temperature processes, such as phase transformations, from occurring. It does this by reducing the window of time during which these undesired reactions are both thermodynamically favorable, and kinetically accessible; for instance, quenching can reduce the crystal grain size of both metallic and plastic material
The length of the day in Walla Walla varies significantly over the course of the year. In 2017, the shortest day is December 21, with 8 hours, 38 minutes of daylight; the longest day is June 21, with 15 hours, 46 minutes of daylight.
Sunshine & Daylight Hours in Nome, Alaska, Usa. 1  The longest day of the year is 20:43 long and the shortest day is 3:16 long. 2  The longest day is 17:26 longer than the shortest day.  There is an average of 1884 hours of sunlight per year (of a possible 4383) with an average of 5:09 of sunlight per day.