Everyday Use
Ionization-type smoke detectors are gaseous ionization detectors in widespread use. A small source of radioactive americium is placed so that it maintains a current between two plates that effectively form an ionisation chamber. If smoke gets between the plates where ionization is taking place, the ionized gas can be neutralized leading to a reduced current. The decrease in current triggers a fire alarm.
Read more about this topic: Gaseous Ionization Detectors
Famous quotes containing the word everyday:
“Towns are full of people, houses full of tenants, hotels full of guests, trains full of travelers, cafés full of customers, parks full of promenaders, consulting-rooms of famous doctors full of patients, theatres full of spectators, and beaches full of bathers. What previously was, in general, no problem, now begins to be an everyday one, namely, to find room.”
—José Ortega Y Gasset (1883–1955)
“The whole of science is nothing more than a refinement of everyday thinking.”
—Albert Einstein (1879–1955)