Device for combining several signals or data streams into a single
flow.
n-type
Characterizes a semiconductor containing predominantly mobile
electrons (also see"p-type").
NAND
NOT-AND -- logic gate whose output is the negation of that of the
AND gate.
Nernst equation
An equation relating the potential of an electrochemical cell to
the concentrations of the cell components: E = Eo + RT/zF
ln C1/C2
with z the charge exchanged at the electrode and
C1 and C2
concentrations of two electro-active compounds.
NOR
NOT-OR -- logic gate whose output is the negation of that of the
OR gate.
NOT
Logic gate whose output is binary 1 when its input is 0, and whose
output is a 0 when its input is a 1.
Nucleation
The initial stage in a phase transformation, evidenced by the
formation of small particles (nuclei) of the new phase, which are
capable of growing.
Nucleotide
A monomer of the nucleic acids composed of a five-carbon sugar, a
nitrogen-containing base, and phosphoric acid.
Ohm (Ω)
Unit of resistance. One ohm is the electrical resistance between
two points of a conductor when a constant potential difference of
1 volt, applied to these points, produces a current of 1 ampere in
the conductor.
