-
across a gap, or a
dielectric barrier.
There are two
types of
electrets: Real-charge
electrets which contain excess free
charges such as
electrons or electron...
-
formation of a
magnet by
alignment of
magnetic domains in a
piece of iron.
Electrets are
commonly made by
first melting a
suitable dielectric material such...
- and Gravitation,
physicist Edward Teller discussed experimentation with
electrets, or
materials with a
permanent electric dipole moment, near its transition...
- bulk
resistivity makes it an
ideal material for
fabricating long-life
electrets, the
electrostatic analogues of
permanent magnets. PTFE film is also widely...
-
called electrets (which
should not be
confused with ferroelectrics), may
retain excess internal charge or "frozen in" polarisation.
Electrets have a semi-permanent...
-
production and
design of
microphones and
techniques for
creating polymer foil
electrets. West was born on
February 10, 1931, in Farmville,
Prince Edward County...
- and crystals; however, soft
pyroelectricity can be
achieved by
using electrets.
Pyroelectricity is
measured as the
change in net
polarization (a vector)...
-
condenser microphone is
replaced by a
permanent charge in an
electret material. An
electret is a
ferroelectric material that has been
permanently electrically...
- ferromagnetism. An
electrostatic motor is the dual of a
magnetic motor;
Electrets are the dual of
permanent magnets; The
Faraday effect is the dual of the...
- can also be stand-alone devices. The
integrated preamplifier in a foil
electret microphone. The
first stages of an
instrument amplifier,
which is then...
