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Smoke detectors, x-rays, sterilizing items such as medical supplies.
Smoke detectors detect smoke by not detecting it. They sense not the smoke, but the oxygen levels surrounding it. when the oxygen levels drop, or when smoke replaces the oxygen, the alarm goes off.
There are two types of smoke detectors:Photoelectric Smoke detectorsIonizing Smoke DetectorsIonization smoke detectors are more commonly used. The smoke detector uses an ionization chamber and a source of ionizing radiation to detect smoke.Alpha particles are emitted from from the chamber, which ionize the air, so that the air conducts electricity and a small current flows.If smoke enters the alarm, it absorbs the alpha particles causing the current to reduce, and the alarm sounds.Generally, smoke detectors use a weak source made of Americium-241 (241Am95).Note: Alpha particles are the nuclei of a Helium Atom (4He2).
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Phone radiation can be harmful to humans. It is harmful when the person is on the phone a lot.
It can be used for smoke detectors
Smoke detectors
Americium-241 this is an emitter of alpha radiation, which is used in smoke detectors as it is very ionising and will not be able to travel through smoke. Therefore, in a fire the detector will not receive any alpha radiation and hence the alarm will go off.
Smoke detectors, x-rays, sterilizing items such as medical supplies.
It is used in smoke detectors as it cannot travel far in air. Alpha radiation is emitted and as long as the detector in the device is receiving the alpha radiation, then no smoke is present. When smoke particles are present, they interrupt the radiation, and so the detector doesn't pick up the radiation, causing the alarm to go off.
Masterguard Smoke Detectors are made in Coppell, TX.
No, the radioactive sources in smoke detectors emit alpha particles. These are very weakly penetrating and are stopped by a few centimetres of air, therefore the plastic casing of the detector is sufficient to stop any radiation.
Radioactive sources release some form of radiation, in the case of smoke detectors the specific type will be alpha radiation- most likely from americium 241. The alpha radiation is a helium nucleus which is highly ionizing but is fairly safe since it can only travel around about 5cm in the air, the act of a stream of alpha radiation being intercepted by CO2 cuts a circuit and is how the CO2 is detected.
Smoke detectors are devices that detect smoke. They are used as warning devices in houses to warn people of fire.
Yes, even though they do emit ionizing radiation. The amount of radiation emitted from a smoke detector is about 1 hundredth of a millirem per year. The background radiation from radioactive isotopes in the ground is about 300 millirem per year. So the ground your standing on right now is exposing you to more radiation then your smoke detector ever will.
No
no