An infrared thermometer is a thermometer which infers temperature from a portion of the thermal radiation sometimes called black body radiation emitted by the object being measured. Each measure describes a different aspect of radiation and each has its own unit.
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What do they measure radiation in. As they move the molecules emit infrared radiation a type of electromagnetic radiation below the visible spectrum of light. A device such as a geiger counter can be used to survey people to determine the body location of radioactive particles. The units for exposure are the roentgen r and coulombkilogram ckg. A device called a dosimeter can measure the absorbed dose of radiation but only if it was exposed to the same radiation event as the affected person. A bsorbed dose describes the amount of radiation absorbed by an object or person that is the amount of energy that radioactive sources deposit in materials through which they pass. Look for radiation meters online or at a laboratory supplier.
Sometimes they measure the dose that a person receives from a radioactive source and sometimes they measure the amount of radioactivity in water or in soil or in the air. Many radiation monitors measure exposure. Rem roentgen equivalent man a unit of equivalent absorbed dose of radiation which takes into account the relative biological effectiveness of different forms of ionizing radiation or the varying ways in which they transfer their energy to human tissue. A more sophisticated measure of radiation exposure. In general devices detect contamination measure dose or do both. That is why heated metal can glow red or even white.
Some units used in measuring ionizing radiation and radiation dose. As they get hotter they emit more infrared and even start to emit visible light. Generally geiger counters are the easiest way to find radioactive contamination and measure exposure. They are sometimes called laser thermometers as a laser is used to help aim the thermometer or non contact thermometers or temperature guns to describe the devices ability to measure temperature from a distance. Infrared thermometers detect and measure this radiation. If emergency workers had not been evacuated shortly afterward they would have gotten their yearly occupational dosage in just over 6 hours.
Scientists measure radiation in different ways. Devices that detect radiation include geiger counters ionization chambers and personal dosimeters.
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