- A
metal detector is an
instrument that
detects the
nearby presence of metal.
Metal detectors are
useful for
finding metal objects on the surface, underground...
- A
smoke detector is a
device that
senses smoke,
typically as an
indicator of fire.
Smoke detectors/alarms are
usually housed in
plastic enclosures, typically...
- A
phase detector or
phase comparator is a
frequency mixer,
analog multiplier or
logic circuit that
generates a
signal which represents the
difference in...
-
neutrino detectors must be very
large to
detect a
significant number of neutrinos.
Neutrino detectors are
often built underground, to
isolate the
detector from...
- A polygraph,
often incorrectly referred to as a lie
detector test, is a
pseudoscientific device or
procedure that
measures and
records several physiological...
- A
crystal detector is an
obsolete electronic component used in some
early 20th
century radio receivers. It
consists of a
piece of
crystalline mineral that...
- A
radar detector is an
electronic device used by
motorists to
detect if
their speed is
being monitored by
police or law
enforcement using a
radar gun....
- The nitrogen–phosphorus
detector (NPD) is also
known as
thermionic specific detector (TSD) is a
detector commonly used with gas chromatography, in which...
- A
Cherenkov detector (pronunciation: /tʃɛrɛnˈkɔv/; Russian: Черенко́в) is a
particle detector using the
speed threshold for
light production, the speed-dependent...
-
called a
detector. A
variety of
different detector devices, such as the coherer,
electrolytic detector,
magnetic detector and the
crystal detector, were...
