different kinds of photographic rays
different kinds of photographic rays
X-rays will "Fog" photographic plates. That means the plates act as if 'exposed' to light. If the X-rays are intense enough, the plates will appear to be totally exposed.
cathode rays
Emitting alpha particles and gamma rays. These rays affect the photographic emulsion. The natural radioactivity of uranium was discovered by Henri Becquerel in 1896.
photographic film
camera
camera
[Traditional] cameras.
The element with atomic number 47 is Silver (Ag). It is used in photographic film, as well as solar panels, water filtration, X-rays, and disinfectants.
Radioactivity
a way to focus light rays from a subject onto a surface a way to permanently alter that surface
Tesla reported that, driven by his observation of mysterious damage to photographic plates in his laboratory, he began his investigation of x-rays at that time still unknown and unnamed in 1894.