To 'have a chip on your shoulder' means to have an irrational resentment directed at other people (especially those who are not a member of a group or community which you identify with) because of a sense of inferiority (or an erroneous impression that others see you as inferior).
Part of the Nanotechnology glossary: A nanometer is a unit of spatial measurement that is 10-9 meter, or one billionth of a meter. It is commonly used in nanotechnology, the building of extremely small machines. This was last updated in September 2005. Contributor(s): Ian Pulham.
Smaller units are the realm of the scientist and engineer. One micrometer (symbolized Âµm or Âµ), also called a micron, is equal to 0.0001 (10-4) cm. One nanometer (nm) is equal to 10-7 cm. One AngstrÃ¶m unit (symbolized Ã¤) is equal to 10-8 cm, or 0.1 nm.