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.
Parts of Los Angeles, Glendale, Burbank, San Fernando, Hidden Hills, Calabasas. The San Fernando Valley is an urbanized valley in Los Angeles County, California, defined by the mountains of the Transverse Ranges circling it. Home to 1.8 million people, it is north of the larger, more populous Los Angeles Basin. Nearly two thirds of the valley's land area is part of the city of Los Angeles.