Physics 4.2.3 Flashcards
1
Q
What Determines which Radiation is Used in a particular application?
A
It’s Properties.
2
Q
What type of Radiation is Used in Smoke Detectors?
A
Alpha Radiation.
3
Q
Explain how Smoke Detectors work. (3)
A
-The Alpha Radiation will normally Ionise to Air within the Detector, Creating a Current.
-The Alpha Emitter is Blocked when Smoke Enters the Detector.
-The Alarm is Triggered by a Microchip when the Sensor no longer Detects Alpha.
4
Q
Why is Alpha Radiation the best pick for Use in Smoke Detectors?
A
Due to it’s Ionising Power.
