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Additional
nanometer
English Wikipedia - The Free Encyclopedia
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Nanometre
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 of a
metre
( m) . The name combines the
SI prefix
nano-
(from the
Ancient Greek
, , "dwarf") with the parent unit name
metre
(from Greek , , "unit of measurement"). It can be written in
scientific notation
as , in
engineering notation
as , and is simply . One nanometre equals ten
ångströms
.
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