Did you know some smoke detectors contain a radioactive element? Ionization smoke detectors use americium-241 to ionize air inside the chamber, creating a small electrical current. When smoke enters, that current drops and the alarm sounds. But if an HVAC return is too close, airflow can interfere with detection. In this video, Kris Explains It breaks down how smoke detectors work and why proper placement is critical for safety. #krisexplainsit #science #smokedetector | Kris Explains It
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