That depends on certain factors:
i.e. what type of detector(s) are being used
this helps to determine the distance that the detector will 'reach' and at what speeds will the detector be able to 'measure'. (10mph. 20mph etc etc)
A better and more correct word to use here is measure instead of detect because this is what a radiological monitoring system does in reality. It measures 'energy'.
Lastly, most systems fail all tests of measurement on a highway/freeway .............except ours that is! Hope this helps............
We have detectors on our bodies to detect electromagnetic radiation that we refer to as 'light',and also radiation in the far infrared that we refer to as 'heat'.A lot of people think we're also able to detect EM radiation in other bands, but scientific experimentationdoesn't support that.Yet ? ~ ~ oooweeeooo ~ ~ ~ ~
Our eyes can detect radiation of wavelength ranging from 4000 Angstrom to 8000 Angstrom.
There are many levels of long range motion detectors, personal use and commercial use. Some motion detectors can detect movement up to 8-10 miles away. Some good brands for long range motion detectors are Honeywell and KNX.
Smoke detectors, the older ones, used radiation to detect the smoke. Soil density testers use radiation. A lot of medical instruments use it--X-ray machines and radiation machines for cancer treatment.
Radiation
Laser detectors detect laser speed devices and Radar detectors detect radar speed devices.Unfortunately it's usually too late when they detect Lasers.
Geiger Counter, named after Hans Geiger, who developed the device in 1908.
We have detectors on our bodies to detect electromagnetic radiation that we refer to as 'light',and also radiation in the far infrared that we refer to as 'heat'.A lot of people think we're also able to detect EM radiation in other bands, but scientific experimentationdoesn't support that.Yet ? ~ ~ oooweeeooo ~ ~ ~ ~
Instruments for detecting infrared radiation include heat-sensitive devices such as thermocouple detectors, bolometers, photovoltaic cells, and photoconductors.Pranay karnatak
Yes. Infrared are currently considered to be the best option to detect gas leaks. They use the absorption of infrared radiation at certain wavelengths to detect dangerous levels of toxic and combustible gases.
Photoelectric detectors are more sensitive to slow, smoldering fires
No
they detect metal
To detect when people lie.
yes
they mite
Smoke detectors are devices that detect smoke. They are used as warning devices in houses to warn people of fire.