1. Smoke Detectors
The United States has a serious and substantial fire problem. Roughly once every one and one half seconds an unreported fire occurs. Nearly once every minute somewhere in America there is a home fire serious enough ... minute quality of americium-241, which is a source of alpha particles. The ionization chamber consists of two plates separated by about a centimeter. The battery applies a voltage to the plates, charging one plate positive and the other plate negative. Alpha particles constantly released by the americium knock electrons off of ... photocell. When sufficient light hits the cell...
- Word Count: 1727
- Approx Pages: 7
- Has Bibliography
- Grade Level: High School