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.
There are 1.0E-9 meter in a nanometer. 1 Nanometer is equal to 1.0E-9 Meter. 1 nm = 1.0E-9 m. Used mostly for scientific purposes, a nanometer is a unit of length which equals to 1 / 1,000,000,000th of a meter. It is a Si unit with the symbol of nm. It is also known as millimicron.