You are not an independent student if: Â¾ You were a âward of the courtâ and were living with your parents, under the monitoring of the criminal legal. system, ordered by the court and/or you were incarcerated. If the above is true, you are considered a dependent student. You will be required to provide your parentsâ.
Smoke detectors are the most common consumer product that uses nuclear technology. They work by putting a source of alpha radiation, usually Americium-241, near an ion detector.hen there is a certain concentration of smoke in the air, the charge drops, and the electronics in the detector sound an alert. This design allows smoke detectors to work for a long time, because Americium-241 has a half-life of 458 years. Source: Teaching Advanced Physics.
Photoelectric smoke detectors therefore use light in a different way. Inside the smoke detector there is a light and a sensor, but they are positioned at 90-degree angles to one another, like this: In the normal case, the light from the light source on the left shoots straight across and misses the sensor.hen smoke enters the chamber, however, the smoke particles scatter the light and some amount of light hits the sensor: The sensor then sets off the horn in the smoke detector. Photoelectric detectors are better at sensing smoky fires, such as a smoldering mattress.