1 Base curve: a simple spherical curve; the primary lens curve. 2  Lens blank: basic spherical lens; the lab grinds the back of the blank to match the prescription.  Optical center: a spot on a spherical lens where light enters at a 90-degree angle to the lens plane.
In short, a subculture is a group detaching itself from mainstream society, catering to certain people's ideologies and preferences. The punk movement is an excellent example of the rise and fall of a subculture.A subculture is a group of people with different ideologies and usually fashion and music tastes then that of the larger culture they are a part of. Many subcultures also detest the mainstream and commercialization.n short, a subculture is a group detaching itself from mainstream society, catering to certain people's ideologies and preferences. The punk movement is an excellent example of the rise and fall of a subculture.
Different from the majority, which passively accepted commercially provided styles and meanings, and a 'subculture' which actively sought a minority style. In other words, subcultures are groups of individuals who, through a variety of methods, present themselves in opposition to the mainstream trends of their culture. If the subculture is characterized by a systematic opposition to the dominant culture, then it may be described as a counterculture.