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alpha radiation
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∙ 14y ago
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What are the drawbacks of alpha radiation in a smoke alarm?
they are bad
Will incense set off a smoke alarm?
Any type of smoke, steam or particles denser than air will set off a smoke alarm. This means that smoke emitted from the incense will set off a smoke alarm when in range of the detector.
What use is alpha radiation?
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.
Are smoke alarms radioactive?
Most smoke alarms use Americium-241 to detect smoke and hot air, thus triggering the alarm. Some gamma radiation is emitted by the smoke alarm but all the alpha radiation is blocked by the black box. Living for a year within 1 metre of a smoke alarm would give you a radiation dose of 1.5 millimeters per year, which is about 1/1000th of the radiation that we receive normally. If you held a smoke alarm in your hand then you would get a significant dose, but you're not going to do that are you? The Americium is chosen because of it's very high melting point (it's designed to work in a fire). Even in a house fire, the material will not melt and would not be a health hazard. But there are some safety things to remember - Never hold a smoke alarm in your hand to long - Never attempt to disassemble the radioactive elements housing or damage it as will release radiation still capable of causing a health hazard
How are alpha particles used in smoke alarms?
Alpha radiation is emitted from the amercium button in a smoke detector. When smoke goes into the smoke detector it blocks the stream of alpha particles emitted from the americium. That triggers an alarm.
Where would you not install a smoke alarm?
I would not install a smoke alarm, in the kitchen.
What is something that alerts you?
alarm clock smoke alarm cellphone ................................................
Why do you use alpha radiation in smoke alarms?
Alpha is used because it rarely effects our bodies from the outside. This is because it only travels approximately 5cm. Beta and Gamma are more dangerous as they can travel through your skin.
A synthetic element that is used in smoke detectors is?
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.
Are there different types of smoke alarms, and how do I choose the right one for my home?
Yes, there are different types of smoke alarms, and choosing the right one for your home is a crucial part of effective smoke alarm installation. The main types of smoke alarms are ionization and photoelectric smoke alarms, and there are also dual-sensor alarms available. Ionization smoke alarms are more responsive to fast-burning fires, while photoelectric smoke alarms are better at detecting smoldering fires. Dual-sensor smoke alarms combine both technologies, offering comprehensive protection. When determining which type of smoke alarm to install during the smoke alarm installation process, consider the specific fire risks in your home. For instance, if you have a kitchen with cooking appliances, a photoelectric smoke alarm may be more suitable, as it is less likely to be triggered by cooking-related smoke. In areas prone to smoldering fires, such as near a fireplace, a photoelectric alarm is an excellent choice. For the most comprehensive protection, you might opt for dual-sensor smoke alarms. These are designed to detect a wide range of fire types effectively. Remember, during the smoke alarm installation process, follow the manufacturer's instructions for placement and spacing to ensure the alarms cover your home adequately. The right choice of smoke alarm type, along with proper installation, will greatly enhance the fire safety in your home.
How is radioactivity used in smoke detectors?
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).
Did Obama invent the smoke alarm?
NO he didn't.
