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.
CLIMATE OVERVIEW. Walla Walla, Washington, gets 18 inches of rain per year. The US average is 39. Snowfall is 10 inches. The average US city gets 26 inches of snow per year. The number of days with any measurable precipitation is 46. On average, there are 188 sunny days per year in Walla Walla, Washington. The July high is around 89 degrees. The January low is 29. Sperling's comfort index for Walla Walla is a 76 out of 100, where a higher score indicates a more comfortable year-around climate.