Depending upon the conditions, either nucleation or growth may be predominant over the other, and as a result, crystals with different sizes and shapes are obtained (Control of crystal size and shape constitutes one of the main challenges in industrial manufacturing, such as for pharmaceuticals).
For the region, see San Fernando Valley. San Fernando is a city located in the San Fernando Valley, in the northwestern region of Los Angeles County, California. It is completely surrounded by the City of Los Angeles.
San Fernando Valley. The San Fernando Valley (known as The Valley) is an urbanized valley in the Los Angeles metropolitan area of southern California. It has the mountains of the Transverse Ranges circling it. It is home to 1.8 million people. It lies north of the larger and more populous Los Angeles Basin.