X RAY FILM AND SILVER BROMIDE

After researching a bit, I found out that aluminum oxide is used in crystals for instance, missile guidance systems; this kind of crystals are also detemrine by chromium 51, anyway that gave me another clue, which was , this solubles in silver; what silver? its silver radioactive? well, silver 107 might be, than what's silver 107, well its silver bromide; which is an old x ray film; when exposure to light, however, we could say silver 107 becomes activated; what's activated? its that silver bromide on a gelatine base its not only active in light but also have too fast particles; what are fast particles? fast particles are unstable electrons; therefore atomic neutrons; therefore, radioactive; what's the conclusion? the conclusion is, the old film that gives the x ray image is impregnated of radioactive, which is silver bromide (when activated by sunlight)