The nanometre (international spelling as used by the International Bureau of Weights and Measures; SI symbol: nm) or nanometer (American spelling) is a unit of length in the metric system, equal to one billionth (short scale) of a metre (0.000 000 001 m).One nanometre can be expressed in scientific notation as 1 × 10 −9 m, and as 1 / 1 000 000 000 metres.

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The 65 nm process is an advanced lithographic node used in volume CMOS semiconductor fabrication.Printed linewidths (i.e. transistor gate lengths) can reach as low as 25 nm on a nominally 65 nm process, while the pitch between two lines may be greater than 130 nm. For comparison, cellular ribosomes are about 20 nm end-to-end. A crystal of bulk silicon has a …

The square meter is the SI-derived unit of area.It has a symbol m² (33A1 in Unicode).It is defined as the area of a square whose sides measure exactly one metre. The square metre is derived from the SI base unit of the metre, which in turn is defined as the length of the path travelled by light in absolute vacuum during a time interval of 1 ⁄ 299,792,458 of a second.

An order of magnitude describes the link between two amounts. The difference between each step is usually 10, with each order being either 10 times greater or 10 times smaller than the next amount. This makes the scale easy to manipulate using logarithms.For time, the difference between the smallest limit of time, the Planck time, and the next order of magnitude is larger …

Le préfixe nano-(symbole n) est le préfixe du Système international d'unités qui représente 10 −9 (un milliardième). Confirmé en 1960 [1], il provient du grec νανος / nanos (« nain »).. Le préfixe nano- est très utilisé pour les dimensions atomiques et subatomiques (nanomètre : 1 nm = 10 –9 m) ainsi qu'en magnétisme (nanotesla : 1 nT = 10 –9 T) et en électronique ...